TY  - JOUR
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12222
PB  - Belgrade : Vinča Institute of Nuclear Science, National Institute of the Republic of Serbia, University of Belgrade
T2  - Thermal Science
T1  - Thermal Science
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12222
ER  - 

@article{
editor = "Bakić, Vukman, Oka, Simeon N., Jovanović, Marina P.",
year = "2023",
publisher = "Belgrade : Vinča Institute of Nuclear Science, National Institute of the Republic of Serbia, University of Belgrade",
journal = "Thermal Science",
title = "Thermal Science",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12222"
}

Bakić, V., Oka, S. N.,& Jovanović, M. P.. (2023). Thermal Science. in Thermal Science
Belgrade : Vinča Institute of Nuclear Science, National Institute of the Republic of Serbia, University of Belgrade..
https://hdl.handle.net/21.15107/rcub_vinar_12222

Bakić V, Oka SN, Jovanović MP. Thermal Science. in Thermal Science. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12222 .

Bakić, Vukman, Oka, Simeon N., Jovanović, Marina P., "Thermal Science" in Thermal Science (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12222 .

TY  - JOUR
AU  - Rašković, Predrag O.
AU  - Cvetanović, Gradimir
AU  - Vujanović, Milan
AU  - Schneider, Daniel R.
AU  - Guzović, Zvonimir
AU  - Duić, Neven
AU  - Oka, Simeon N.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10486
AB  - This editorial provides an overview of ten scientific articles published as the Special paper selection in Thermal Science. The papers were selected from almost six hundred contributions, presented at the 16th Conference on Sustainable Development of Energy, Water and Environment Systems (SDEWES 2021), held on October 10-15, 2021 in Dubrovnik, Croatia. The topics covered in the Special paper selection include economics of electricity markets, nuclear technology, repowering of the coal-based power plant, hybrid renewable energy system, sustainable biomass handling and conversion, post-combustion emissions control, and efficient cooling technology. The editorial also emphasised the papers recently published in the Special Issues of leading scientific journals dedicated to the series of SDEWES Conferences.
T2  - Thermal Science
T2  - Thermal Science
T1  - The progress toward more sustainable energy, water and environmental systems approaches and applications
VL  - 26
IS  - 5 Part B
SP  - 4057
EP  - 4066
DO  - 10.2298/TSCI2205057R
ER  - 

@article{
author = "Rašković, Predrag O. and Cvetanović, Gradimir and Vujanović, Milan and Schneider, Daniel R. and Guzović, Zvonimir and Duić, Neven and Oka, Simeon N.",
year = "2022",
abstract = "This editorial provides an overview of ten scientific articles published as the Special paper selection in Thermal Science. The papers were selected from almost six hundred contributions, presented at the 16th Conference on Sustainable Development of Energy, Water and Environment Systems (SDEWES 2021), held on October 10-15, 2021 in Dubrovnik, Croatia. The topics covered in the Special paper selection include economics of electricity markets, nuclear technology, repowering of the coal-based power plant, hybrid renewable energy system, sustainable biomass handling and conversion, post-combustion emissions control, and efficient cooling technology. The editorial also emphasised the papers recently published in the Special Issues of leading scientific journals dedicated to the series of SDEWES Conferences.",
journal = "Thermal Science, Thermal Science",
title = "The progress toward more sustainable energy, water and environmental systems approaches and applications",
volume = "26",
number = "5 Part B",
pages = "4057-4066",
doi = "10.2298/TSCI2205057R"
}

Rašković, P. O., Cvetanović, G., Vujanović, M., Schneider, D. R., Guzović, Z., Duić, N.,& Oka, S. N.. (2022). The progress toward more sustainable energy, water and environmental systems approaches and applications. in Thermal Science, 26(5 Part B), 4057-4066.
https://doi.org/10.2298/TSCI2205057R

Rašković PO, Cvetanović G, Vujanović M, Schneider DR, Guzović Z, Duić N, Oka SN. The progress toward more sustainable energy, water and environmental systems approaches and applications. in Thermal Science. 2022;26(5 Part B):4057-4066.
doi:10.2298/TSCI2205057R .

Rašković, Predrag O., Cvetanović, Gradimir, Vujanović, Milan, Schneider, Daniel R., Guzović, Zvonimir, Duić, Neven, Oka, Simeon N., "The progress toward more sustainable energy, water and environmental systems approaches and applications" in Thermal Science, 26, no. 5 Part B (2022):4057-4066,
https://doi.org/10.2298/TSCI2205057R . .

TY  - JOUR
AU  - Stefanović, Predrag Lj.
AU  - Cvetinović, Dejan
AU  - Marković, Zoran J.
AU  - Erić, Milić D.
AU  - Oka, Simeon N.
AU  - Repić, Branislav
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8981
AB  - Paper presents short review of research problems, applied methods for solving problems and main results obtained by the researchers in Laboratory for Ther-mal Engineering and Energy (LTE) of the "Vinca" Institute of Nuclear Sciences, Belgrade, Serbia dealing with pulverized coal combustion processes and tech-nologies for reduction of pollutions problems at thermal power plants in a period since 2000. The presented results were published in numerous studies realized for different users, Ph. D., Masters, and Specialist thesis, in international and domestic scientific journals and monographs, presented at numerous internation-al and domestic scientific conferences, etc. Presented research projects and re-sults of applied research projects realized at pulverized coal combustion thermal power plants clearly show that LTE team was involved in key activities of reha-bilitation and modernization, including implementation of best available technol-ogies for pollution reduction at thermal power plants, in the region of South East Europe.
T2  - Thermal Science
T1  - Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B
VL  - 23
IS  - Suppl. 5
SP  - 1611
EP  - 1626
DO  - 10.2298/TSCI19S5611R
ER  - 

@article{
author = "Stefanović, Predrag Lj. and Cvetinović, Dejan and Marković, Zoran J. and Erić, Milić D. and Oka, Simeon N. and Repić, Branislav",
year = "2019",
abstract = "Paper presents short review of research problems, applied methods for solving problems and main results obtained by the researchers in Laboratory for Ther-mal Engineering and Energy (LTE) of the "Vinca" Institute of Nuclear Sciences, Belgrade, Serbia dealing with pulverized coal combustion processes and tech-nologies for reduction of pollutions problems at thermal power plants in a period since 2000. The presented results were published in numerous studies realized for different users, Ph. D., Masters, and Specialist thesis, in international and domestic scientific journals and monographs, presented at numerous internation-al and domestic scientific conferences, etc. Presented research projects and re-sults of applied research projects realized at pulverized coal combustion thermal power plants clearly show that LTE team was involved in key activities of reha-bilitation and modernization, including implementation of best available technol-ogies for pollution reduction at thermal power plants, in the region of South East Europe.",
journal = "Thermal Science",
title = "Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B",
volume = "23",
number = "Suppl. 5",
pages = "1611-1626",
doi = "10.2298/TSCI19S5611R"
}

Stefanović, P. Lj., Cvetinović, D., Marković, Z. J., Erić, M. D., Oka, S. N.,& Repić, B.. (2019). Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B. in Thermal Science, 23(Suppl. 5), 1611-1626.
https://doi.org/10.2298/TSCI19S5611R

Stefanović PL, Cvetinović D, Marković ZJ, Erić MD, Oka SN, Repić B. Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B. in Thermal Science. 2019;23(Suppl. 5):1611-1626.
doi:10.2298/TSCI19S5611R .

Stefanović, Predrag Lj., Cvetinović, Dejan, Marković, Zoran J., Erić, Milić D., Oka, Simeon N., Repić, Branislav, "Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B" in Thermal Science, 23, no. Suppl. 5 (2019):1611-1626,
https://doi.org/10.2298/TSCI19S5611R . .

TY  - JOUR
AU  - Repić, Branislav
AU  - Stefanović, Predrag Lj.
AU  - Belošević, Srđan
AU  - Crnomarković, Nenad Đ.
AU  - Oka, Simeon N.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8946
AB  - The paper presents an overview of the results of the investigations of the process-es that take place in pulverized coal combustion boilers and power plants which, in a longer period of time, were realized in the Laboratory for Thermal Engineer-ing and Energy of the "Vinca" Institute of Nuclear Sciences. The presented re-sults were published in numerous studies realized for different users, Ph. D., M. Sc., and specialist thesis, in international and domestic scientific journals and monographs, presented at numerous international and domestic scientific meet-ings, etc. The main goal of the paper is to chronologically present the results of domestic research that at one time were at an enviable international level, with concrete practical applications for domestic users. This is especially important to contrast the present situation when domestic research in this area is scarce and when the energy sector relies practically only on imported technologies and for-eign consultancy. © 2019 Society of Thermal Engineers of Serbia.
T2  - Thermal Science
T1  - Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy-Part A
VL  - 23
IS  - Suppl. 5
SP  - S1587
EP  - S1609
DO  - 10.2298/TSCI191030443R
ER  - 

@article{
author = "Repić, Branislav and Stefanović, Predrag Lj. and Belošević, Srđan and Crnomarković, Nenad Đ. and Oka, Simeon N.",
year = "2019",
abstract = "The paper presents an overview of the results of the investigations of the process-es that take place in pulverized coal combustion boilers and power plants which, in a longer period of time, were realized in the Laboratory for Thermal Engineer-ing and Energy of the "Vinca" Institute of Nuclear Sciences. The presented re-sults were published in numerous studies realized for different users, Ph. D., M. Sc., and specialist thesis, in international and domestic scientific journals and monographs, presented at numerous international and domestic scientific meet-ings, etc. The main goal of the paper is to chronologically present the results of domestic research that at one time were at an enviable international level, with concrete practical applications for domestic users. This is especially important to contrast the present situation when domestic research in this area is scarce and when the energy sector relies practically only on imported technologies and for-eign consultancy. © 2019 Society of Thermal Engineers of Serbia.",
journal = "Thermal Science",
title = "Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy-Part A",
volume = "23",
number = "Suppl. 5",
pages = "S1587-S1609",
doi = "10.2298/TSCI191030443R"
}

Repić, B., Stefanović, P. Lj., Belošević, S., Crnomarković, N. Đ.,& Oka, S. N.. (2019). Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy-Part A. in Thermal Science, 23(Suppl. 5), S1587-S1609.
https://doi.org/10.2298/TSCI191030443R

Repić B, Stefanović PL, Belošević S, Crnomarković NĐ, Oka SN. Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy-Part A. in Thermal Science. 2019;23(Suppl. 5):S1587-S1609.
doi:10.2298/TSCI191030443R .

Repić, Branislav, Stefanović, Predrag Lj., Belošević, Srđan, Crnomarković, Nenad Đ., Oka, Simeon N., "Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy-Part A" in Thermal Science, 23, no. Suppl. 5 (2019):S1587-S1609,
https://doi.org/10.2298/TSCI191030443R . .

TY  - JOUR
AU  - Grubor, Borislav
AU  - Dakić, Dragoljub V.
AU  - Nemoda, Stevan
AU  - Mladenović, Milica R.
AU  - Paprika, Milijana
AU  - Oka, Simeon N.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8985
AB  - The paper gives a review of the most important results of extensive targeted fundamental research program on fluidized bed combustion in the Laboratory for Thermal Engineering and Energy of the VINCA Institute of Nuclear Sciences. The paper presents a detailed overview of research activities from the beginning in the second half of the 1970'' up to present days. Starting with the motives for initiating the investigations in this field, the paper highlights various phases of research and points out the main results of all research activities, not only the ones that are focused in this paper. Targeted fundamental research topics that are overviewed in this paper are heat and mass transfer, coal particle fragmentation, char particle combustion, sulfur self-retention by coal ash itself, as well as circulating fluidized bed modeling.
T2  - Thermal Science
T1  - Research in the fluidized bed combustion in the Laboratory for thermal engineering and energy - Part A: Achievements in targeted fundamental research
VL  - 23
IS  - Suppl. 5
SP  - 1637
EP  - 1653
DO  - 10.2298/TSCI180725289G
ER  - 

@article{
author = "Grubor, Borislav and Dakić, Dragoljub V. and Nemoda, Stevan and Mladenović, Milica R. and Paprika, Milijana and Oka, Simeon N.",
year = "2019",
abstract = "The paper gives a review of the most important results of extensive targeted fundamental research program on fluidized bed combustion in the Laboratory for Thermal Engineering and Energy of the VINCA Institute of Nuclear Sciences. The paper presents a detailed overview of research activities from the beginning in the second half of the 1970'' up to present days. Starting with the motives for initiating the investigations in this field, the paper highlights various phases of research and points out the main results of all research activities, not only the ones that are focused in this paper. Targeted fundamental research topics that are overviewed in this paper are heat and mass transfer, coal particle fragmentation, char particle combustion, sulfur self-retention by coal ash itself, as well as circulating fluidized bed modeling.",
journal = "Thermal Science",
title = "Research in the fluidized bed combustion in the Laboratory for thermal engineering and energy - Part A: Achievements in targeted fundamental research",
volume = "23",
number = "Suppl. 5",
pages = "1637-1653",
doi = "10.2298/TSCI180725289G"
}

Grubor, B., Dakić, D. V., Nemoda, S., Mladenović, M. R., Paprika, M.,& Oka, S. N.. (2019). Research in the fluidized bed combustion in the Laboratory for thermal engineering and energy - Part A: Achievements in targeted fundamental research. in Thermal Science, 23(Suppl. 5), 1637-1653.
https://doi.org/10.2298/TSCI180725289G

Grubor B, Dakić DV, Nemoda S, Mladenović MR, Paprika M, Oka SN. Research in the fluidized bed combustion in the Laboratory for thermal engineering and energy - Part A: Achievements in targeted fundamental research. in Thermal Science. 2019;23(Suppl. 5):1637-1653.
doi:10.2298/TSCI180725289G .

Grubor, Borislav, Dakić, Dragoljub V., Nemoda, Stevan, Mladenović, Milica R., Paprika, Milijana, Oka, Simeon N., "Research in the fluidized bed combustion in the Laboratory for thermal engineering and energy - Part A: Achievements in targeted fundamental research" in Thermal Science, 23, no. Suppl. 5 (2019):1637-1653,
https://doi.org/10.2298/TSCI180725289G . .

TY  - JOUR
AU  - Grubor, Borislav
AU  - Dakić, Dragoljub V.
AU  - Nemoda, Stevan
AU  - Mladenović, Milica R.
AU  - Paprika, Milijana
AU  - Oka, Simeon N.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8988
AB  - Paper gives a review of the most important results of extensive and wide-ranging research program on R&D of fluidized bed combustion technology in the Laboratory for Thermal Engineering and Energy of the VINCA Institute of Nuclear Sciences. Paper presents detailed overview of R&D activities from the beginning in the second half of the 1970's up to present days. These activities encompass applied research achievements in the field of characterization of limestones and bed agglomeration and sintering and modeling of overall processes during fluidized bed combustion, all of which have facilitated the R&D of the fluidized bed combustion technology. Attention is also given to steady-state combustion testing of a wide-range of fuels (coals, liquid fuels, biomass, waste solid and liquid materials, etc.) in our fluidized bed combustor and development of original methodology for testing the suitability of fuels for fluidized bed combustion, as well as specific achievements in the area of technology application in Serbia.
T2  - Thermal Science
T1  - Research in the fluidized bed combustion in the Laboratory for thermal engineering and energy - Part B: Achievements in technology implementation
VL  - 23
IS  - Suppl. 5
SP  - 1655
EP  - 1667
DO  - 10.2298/TSCI180725290G
ER  - 

@article{
author = "Grubor, Borislav and Dakić, Dragoljub V. and Nemoda, Stevan and Mladenović, Milica R. and Paprika, Milijana and Oka, Simeon N.",
year = "2019",
abstract = "Paper gives a review of the most important results of extensive and wide-ranging research program on R&D of fluidized bed combustion technology in the Laboratory for Thermal Engineering and Energy of the VINCA Institute of Nuclear Sciences. Paper presents detailed overview of R&D activities from the beginning in the second half of the 1970's up to present days. These activities encompass applied research achievements in the field of characterization of limestones and bed agglomeration and sintering and modeling of overall processes during fluidized bed combustion, all of which have facilitated the R&D of the fluidized bed combustion technology. Attention is also given to steady-state combustion testing of a wide-range of fuels (coals, liquid fuels, biomass, waste solid and liquid materials, etc.) in our fluidized bed combustor and development of original methodology for testing the suitability of fuels for fluidized bed combustion, as well as specific achievements in the area of technology application in Serbia.",
journal = "Thermal Science",
title = "Research in the fluidized bed combustion in the Laboratory for thermal engineering and energy - Part B: Achievements in technology implementation",
volume = "23",
number = "Suppl. 5",
pages = "1655-1667",
doi = "10.2298/TSCI180725290G"
}

Grubor, B., Dakić, D. V., Nemoda, S., Mladenović, M. R., Paprika, M.,& Oka, S. N.. (2019). Research in the fluidized bed combustion in the Laboratory for thermal engineering and energy - Part B: Achievements in technology implementation. in Thermal Science, 23(Suppl. 5), 1655-1667.
https://doi.org/10.2298/TSCI180725290G

Grubor B, Dakić DV, Nemoda S, Mladenović MR, Paprika M, Oka SN. Research in the fluidized bed combustion in the Laboratory for thermal engineering and energy - Part B: Achievements in technology implementation. in Thermal Science. 2019;23(Suppl. 5):1655-1667.
doi:10.2298/TSCI180725290G .

Grubor, Borislav, Dakić, Dragoljub V., Nemoda, Stevan, Mladenović, Milica R., Paprika, Milijana, Oka, Simeon N., "Research in the fluidized bed combustion in the Laboratory for thermal engineering and energy - Part B: Achievements in technology implementation" in Thermal Science, 23, no. Suppl. 5 (2019):1655-1667,
https://doi.org/10.2298/TSCI180725290G . .

TY  - JOUR
AU  - Cvetinović, Dejan
AU  - Stefanović, Predrag Lj.
AU  - Bakić, Vukman
AU  - Oka, Simeon N.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7196
AB  - Paper gives a review of the most important results of turbulence research achieved by the Laboratory for Thermal Engineering and Energy at the Vinca Insitute of Nuclear Sciences. Paper presents detailed overview of the history of the scientific research provided in the laboratory, from the beginning in the mid-60s to today, pointing out the main reasons initiating the investigations in this field. After the first period, which was mainly devoted to the research of the structure of the turbulence, since the beginning of the 80s, research is mainly oriented to the flows at high temperatures including chemical reactions and to the development and improvement of differential mathematical models as a modern and very efficient tool in the technological development. This research significantly contributed to the development of pulverized coal burners, plasma-chemical reactors, and optimization of pulverized coal fired boilers operating parameters and prediction of the greenhouse gases emissions. Most recent period includes experimental and numerical studies of the coherent structures in turbulent fluid jets, mathematical modeling of various turbulent thermal flow processes including two-phase turbulent flow in the multiphase heat exchangers and mathematical modeling of the atmospheric boundary layer.
T2  - Thermal Science
T1  - Review of the Research on the Turbulence in the Laboratory for Thermal Engineering and Energy
VL  - 21
SP  - S875
EP  - S898
DO  - 10.2298/TSCI160221330C
ER  - 

@article{
author = "Cvetinović, Dejan and Stefanović, Predrag Lj. and Bakić, Vukman and Oka, Simeon N.",
year = "2017",
abstract = "Paper gives a review of the most important results of turbulence research achieved by the Laboratory for Thermal Engineering and Energy at the Vinca Insitute of Nuclear Sciences. Paper presents detailed overview of the history of the scientific research provided in the laboratory, from the beginning in the mid-60s to today, pointing out the main reasons initiating the investigations in this field. After the first period, which was mainly devoted to the research of the structure of the turbulence, since the beginning of the 80s, research is mainly oriented to the flows at high temperatures including chemical reactions and to the development and improvement of differential mathematical models as a modern and very efficient tool in the technological development. This research significantly contributed to the development of pulverized coal burners, plasma-chemical reactors, and optimization of pulverized coal fired boilers operating parameters and prediction of the greenhouse gases emissions. Most recent period includes experimental and numerical studies of the coherent structures in turbulent fluid jets, mathematical modeling of various turbulent thermal flow processes including two-phase turbulent flow in the multiphase heat exchangers and mathematical modeling of the atmospheric boundary layer.",
journal = "Thermal Science",
title = "Review of the Research on the Turbulence in the Laboratory for Thermal Engineering and Energy",
volume = "21",
pages = "S875-S898",
doi = "10.2298/TSCI160221330C"
}

Cvetinović, D., Stefanović, P. Lj., Bakić, V.,& Oka, S. N.. (2017). Review of the Research on the Turbulence in the Laboratory for Thermal Engineering and Energy. in Thermal Science, 21, S875-S898.
https://doi.org/10.2298/TSCI160221330C

Cvetinović D, Stefanović PL, Bakić V, Oka SN. Review of the Research on the Turbulence in the Laboratory for Thermal Engineering and Energy. in Thermal Science. 2017;21:S875-S898.
doi:10.2298/TSCI160221330C .

Cvetinović, Dejan, Stefanović, Predrag Lj., Bakić, Vukman, Oka, Simeon N., "Review of the Research on the Turbulence in the Laboratory for Thermal Engineering and Energy" in Thermal Science, 21 (2017):S875-S898,
https://doi.org/10.2298/TSCI160221330C . .

TY  - JOUR
AU  - Tuponogov, Vladimir
AU  - Oka, Simeon N.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/601
T2  - Thermal Science
T1  - Albert Pavlovich Baskakov 1928-2015
VL  - 19
IS  - 2
SP  - VII
EP  - VIII
UR  - https://hdl.handle.net/21.15107/rcub_vinar_601
ER  - 

@article{
author = "Tuponogov, Vladimir and Oka, Simeon N.",
year = "2015",
journal = "Thermal Science",
title = "Albert Pavlovich Baskakov 1928-2015",
volume = "19",
number = "2",
pages = "VII-VIII",
url = "https://hdl.handle.net/21.15107/rcub_vinar_601"
}

Tuponogov, V.,& Oka, S. N.. (2015). Albert Pavlovich Baskakov 1928-2015. in Thermal Science, 19(2), VII-VIII.
https://hdl.handle.net/21.15107/rcub_vinar_601

Tuponogov V, Oka SN. Albert Pavlovich Baskakov 1928-2015. in Thermal Science. 2015;19(2):VII-VIII.
https://hdl.handle.net/21.15107/rcub_vinar_601 .

Tuponogov, Vladimir, Oka, Simeon N., "Albert Pavlovich Baskakov 1928-2015" in Thermal Science, 19, no. 2 (2015):VII-VIII,
https://hdl.handle.net/21.15107/rcub_vinar_601 .

TY  - JOUR
AU  - Burdukov, Anatolij P.
AU  - Nakoryakov, Vladimir E.
AU  - Terekhov, Viktor I.
AU  - Oka, Simeon N.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/242
T2  - Thermal Science
T1  - d100th Anniversary from the birth of Academician Samson Semenovich KUTATELADZE
VL  - 18
IS  - 4
SP  - VII
EP  - VIII
UR  - https://hdl.handle.net/21.15107/rcub_vinar_242
ER  - 

@article{
author = "Burdukov, Anatolij P. and Nakoryakov, Vladimir E. and Terekhov, Viktor I. and Oka, Simeon N.",
year = "2014",
journal = "Thermal Science",
title = "d100th Anniversary from the birth of Academician Samson Semenovich KUTATELADZE",
volume = "18",
number = "4",
pages = "VII-VIII",
url = "https://hdl.handle.net/21.15107/rcub_vinar_242"
}

Burdukov, A. P., Nakoryakov, V. E., Terekhov, V. I.,& Oka, S. N.. (2014). d100th Anniversary from the birth of Academician Samson Semenovich KUTATELADZE. in Thermal Science, 18(4), VII-VIII.
https://hdl.handle.net/21.15107/rcub_vinar_242

Burdukov AP, Nakoryakov VE, Terekhov VI, Oka SN. d100th Anniversary from the birth of Academician Samson Semenovich KUTATELADZE. in Thermal Science. 2014;18(4):VII-VIII.
https://hdl.handle.net/21.15107/rcub_vinar_242 .

Burdukov, Anatolij P., Nakoryakov, Vladimir E., Terekhov, Viktor I., Oka, Simeon N., "d100th Anniversary from the birth of Academician Samson Semenovich KUTATELADZE" in Thermal Science, 18, no. 4 (2014):VII-VIII,
https://hdl.handle.net/21.15107/rcub_vinar_242 .

TY  - JOUR
AU  - Manovic, Vasilije
AU  - Komatina, Mirko
AU  - Oka, Simeon N.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3379
AB  - The temperatures of a coal char particle in hot bubbling fluidized bed (FB) were analyzed by a model of combustion. The unsteady model includes phenomena of heat and mass transfer through a porous char particle, as well as heterogeneous reaction at the interior char surface and homogeneous reaction in the pores. The parametric analysis of the model has shown that above 550 degrees C combustion occurs under the regime limited by diffusion. The experimental results of temperature measurements by thermocouple in the particle center during FB combustion at temperatures in the range 590-710 degrees C were compared with the model predictions. Two coals of different rank were used: lignite and brown coal, with particle size in the range 5-10 mm. The comparisons have shown that the model can adequately predict the histories of temperatures in char particles during combustion in FB. In the first order, the model predicts the influence of the particle size, coal rank (via porosity), and oxygen concentration in its surroundings. (C) 2007 Elsevier Ltd. All rights reserved.
T2  - Fuel
T1  - Modeling the temperature in coal char particle during fluidized bed combustion
VL  - 87
IS  - 6
SP  - 905
EP  - 914
DO  - 10.1016/j.fuel.2007.05.020
ER  - 

@article{
author = "Manovic, Vasilije and Komatina, Mirko and Oka, Simeon N.",
year = "2008",
abstract = "The temperatures of a coal char particle in hot bubbling fluidized bed (FB) were analyzed by a model of combustion. The unsteady model includes phenomena of heat and mass transfer through a porous char particle, as well as heterogeneous reaction at the interior char surface and homogeneous reaction in the pores. The parametric analysis of the model has shown that above 550 degrees C combustion occurs under the regime limited by diffusion. The experimental results of temperature measurements by thermocouple in the particle center during FB combustion at temperatures in the range 590-710 degrees C were compared with the model predictions. Two coals of different rank were used: lignite and brown coal, with particle size in the range 5-10 mm. The comparisons have shown that the model can adequately predict the histories of temperatures in char particles during combustion in FB. In the first order, the model predicts the influence of the particle size, coal rank (via porosity), and oxygen concentration in its surroundings. (C) 2007 Elsevier Ltd. All rights reserved.",
journal = "Fuel",
title = "Modeling the temperature in coal char particle during fluidized bed combustion",
volume = "87",
number = "6",
pages = "905-914",
doi = "10.1016/j.fuel.2007.05.020"
}

Manovic, V., Komatina, M.,& Oka, S. N.. (2008). Modeling the temperature in coal char particle during fluidized bed combustion. in Fuel, 87(6), 905-914.
https://doi.org/10.1016/j.fuel.2007.05.020

Manovic V, Komatina M, Oka SN. Modeling the temperature in coal char particle during fluidized bed combustion. in Fuel. 2008;87(6):905-914.
doi:10.1016/j.fuel.2007.05.020 .

Manovic, Vasilije, Komatina, Mirko, Oka, Simeon N., "Modeling the temperature in coal char particle during fluidized bed combustion" in Fuel, 87, no. 6 (2008):905-914,
https://doi.org/10.1016/j.fuel.2007.05.020 . .

TY  - JOUR
AU  - Saljnikov, Aleksandar
AU  - Oka, Simeon N.
AU  - Stevanović, Žarko M.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3430
AB  - A mathematical and numerical model of pulverized coal combustion in wide-range-use furnaces with swirl burners, i.e., within a turbulent particle-laden swirl flow in axisymmetric geometry is presented. The model is based on the k-epsilon model, considering the presence of the solid phase via the additional source terms in the gas phase equations. The disperse phase is treated through the history of particular particles by using the Lagrangian Stochastic Deterministic model. Devolatilization, homogeneous and heterogeneous chemical reaction processes are modeled via the global combustion model using own reaction kinetics data. The model was used to perform an analysis of influence of flow parameters and coal characteristics upon combustion in a wide-range-use furnace. The model was verified by comparing computational and experimental results for combustion of polydisperse pulverized coal in an experimental furnace.
T2  - Heat Transfer Research
T1  - Mathematical model of combustion in particulate 2-phase flow
VL  - 38
IS  - 4
SP  - 299
EP  - 312
DO  - 10.1615/HeatTransRes.v38.i4.20
ER  - 

@article{
author = "Saljnikov, Aleksandar and Oka, Simeon N. and Stevanović, Žarko M.",
year = "2007",
abstract = "A mathematical and numerical model of pulverized coal combustion in wide-range-use furnaces with swirl burners, i.e., within a turbulent particle-laden swirl flow in axisymmetric geometry is presented. The model is based on the k-epsilon model, considering the presence of the solid phase via the additional source terms in the gas phase equations. The disperse phase is treated through the history of particular particles by using the Lagrangian Stochastic Deterministic model. Devolatilization, homogeneous and heterogeneous chemical reaction processes are modeled via the global combustion model using own reaction kinetics data. The model was used to perform an analysis of influence of flow parameters and coal characteristics upon combustion in a wide-range-use furnace. The model was verified by comparing computational and experimental results for combustion of polydisperse pulverized coal in an experimental furnace.",
journal = "Heat Transfer Research",
title = "Mathematical model of combustion in particulate 2-phase flow",
volume = "38",
number = "4",
pages = "299-312",
doi = "10.1615/HeatTransRes.v38.i4.20"
}

Saljnikov, A., Oka, S. N.,& Stevanović, Ž. M.. (2007). Mathematical model of combustion in particulate 2-phase flow. in Heat Transfer Research, 38(4), 299-312.
https://doi.org/10.1615/HeatTransRes.v38.i4.20

Saljnikov A, Oka SN, Stevanović ŽM. Mathematical model of combustion in particulate 2-phase flow. in Heat Transfer Research. 2007;38(4):299-312.
doi:10.1615/HeatTransRes.v38.i4.20 .

Saljnikov, Aleksandar, Oka, Simeon N., Stevanović, Žarko M., "Mathematical model of combustion in particulate 2-phase flow" in Heat Transfer Research, 38, no. 4 (2007):299-312,
https://doi.org/10.1615/HeatTransRes.v38.i4.20 . .

TY  - JOUR
AU  - Filkoski, R. V.
AU  - Belošević, Srđan
AU  - Petrovski, I. J.
AU  - Oka, Simeon N.
AU  - Sijercic, M. A.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2575
AB  - The paper presents the overall frame, principal steps, and some results of a numerical model of a power boiler furnace that uses pulverized coal, with tangential disposition of the burners. This model demonstrates the application potential of the computational fluid dynamics (CFD) technique and of the computational thermal analysis. Complex three-dimensional furnace geometry, two-phase turbulent flow, coal combustion, and heat transfer have been examined. Two numerical modelling approaches were employed in the investigation, both based on the Euler-Lagrangean two-phase flow concept and on the gas-phase semi-empirical k-epsilon turbulence model. The first approach is based on a specially developed comprehensive model of processes in a pulverized coal furnace. In the second case, a commercial CFD code is used to create a three-dimensional furnace model. Some distinctive results concerning the performance of the boiler that was examined are presented graphically. On the basis of a comparison between the simulation predictions and available site measurements, a conclusion can be drawn that these two numerical codes provide realistic insight into furnace processes. Qualitative agreement indicates that the calculations are reasonable and validates the submodels employed.
T2  - Proceedings of the Institution of Mechanical Engineers. Part A: Journal of Power and Energy
T1  - Computational fluid dynamics technique as a tool for description of the phenomena occurring in pulverized coal combustion systems
VL  - 221
IS  - A3
SP  - 399
EP  - 409
DO  - 10.1243/0956509JPE342
ER  - 

@article{
author = "Filkoski, R. V. and Belošević, Srđan and Petrovski, I. J. and Oka, Simeon N. and Sijercic, M. A.",
year = "2007",
abstract = "The paper presents the overall frame, principal steps, and some results of a numerical model of a power boiler furnace that uses pulverized coal, with tangential disposition of the burners. This model demonstrates the application potential of the computational fluid dynamics (CFD) technique and of the computational thermal analysis. Complex three-dimensional furnace geometry, two-phase turbulent flow, coal combustion, and heat transfer have been examined. Two numerical modelling approaches were employed in the investigation, both based on the Euler-Lagrangean two-phase flow concept and on the gas-phase semi-empirical k-epsilon turbulence model. The first approach is based on a specially developed comprehensive model of processes in a pulverized coal furnace. In the second case, a commercial CFD code is used to create a three-dimensional furnace model. Some distinctive results concerning the performance of the boiler that was examined are presented graphically. On the basis of a comparison between the simulation predictions and available site measurements, a conclusion can be drawn that these two numerical codes provide realistic insight into furnace processes. Qualitative agreement indicates that the calculations are reasonable and validates the submodels employed.",
journal = "Proceedings of the Institution of Mechanical Engineers. Part A: Journal of Power and Energy",
title = "Computational fluid dynamics technique as a tool for description of the phenomena occurring in pulverized coal combustion systems",
volume = "221",
number = "A3",
pages = "399-409",
doi = "10.1243/0956509JPE342"
}

Filkoski, R. V., Belošević, S., Petrovski, I. J., Oka, S. N.,& Sijercic, M. A.. (2007). Computational fluid dynamics technique as a tool for description of the phenomena occurring in pulverized coal combustion systems. in Proceedings of the Institution of Mechanical Engineers. Part A: Journal of Power and Energy, 221(A3), 399-409.
https://doi.org/10.1243/0956509JPE342

Filkoski RV, Belošević S, Petrovski IJ, Oka SN, Sijercic MA. Computational fluid dynamics technique as a tool for description of the phenomena occurring in pulverized coal combustion systems. in Proceedings of the Institution of Mechanical Engineers. Part A: Journal of Power and Energy. 2007;221(A3):399-409.
doi:10.1243/0956509JPE342 .

Filkoski, R. V., Belošević, Srđan, Petrovski, I. J., Oka, Simeon N., Sijercic, M. A., "Computational fluid dynamics technique as a tool for description of the phenomena occurring in pulverized coal combustion systems" in Proceedings of the Institution of Mechanical Engineers. Part A: Journal of Power and Energy, 221, no. A3 (2007):399-409,
https://doi.org/10.1243/0956509JPE342 . .

TY  - JOUR
AU  - Belošević, Srđan
AU  - Sijercic, Miroslav
AU  - Oka, Simeon N.
AU  - Tucaković, Dragan R.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3051
AB  - This paper presents selected results of numerical simulations of processes in utility boiler pulverized coal tangentially fired dry-bottom furnace. The simulations have been performed by specially developed comprehensive mathematical model. The main features of the model are a three-dimensional geometry, k-epsilon gas turbulence model, Eulerian-Lagrangian approach, particles-to-turbulence interaction, diffusion model of particle dispersion, six-flux method for radiation modeling and pulverized coal combustion model based on the global particle kinetics and experimentally obtained kinetic parameters. Five operation regimes of 210 MW, boiler furnace burning Serbian lignites, with different grinding fineness of coal and coal quality, have been simulated. The model successfully predicts the influence of the parameters on the furnace processes and operation characteristics (like the flue gas temperature and the furnace walls radiation fluxes). The predicted flame temperature and percentage combustibles in bottom ash are in good agreement with the measurements. The developed model can find different applications, both in research and practice. (c) 2006 Elsevier Ltd. All rights reserved.
T2  - International Journal of Heat and Mass Transfer
T1  - Three-dimensional modeling of utility boiler pulverized coal tangentially fired furnace
VL  - 49
IS  - 19-20
SP  - 3371
EP  - 3378
DO  - 10.1016/j.ijheatmasstransfer.2006.03.022
ER  - 

@article{
author = "Belošević, Srđan and Sijercic, Miroslav and Oka, Simeon N. and Tucaković, Dragan R.",
year = "2006",
abstract = "This paper presents selected results of numerical simulations of processes in utility boiler pulverized coal tangentially fired dry-bottom furnace. The simulations have been performed by specially developed comprehensive mathematical model. The main features of the model are a three-dimensional geometry, k-epsilon gas turbulence model, Eulerian-Lagrangian approach, particles-to-turbulence interaction, diffusion model of particle dispersion, six-flux method for radiation modeling and pulverized coal combustion model based on the global particle kinetics and experimentally obtained kinetic parameters. Five operation regimes of 210 MW, boiler furnace burning Serbian lignites, with different grinding fineness of coal and coal quality, have been simulated. The model successfully predicts the influence of the parameters on the furnace processes and operation characteristics (like the flue gas temperature and the furnace walls radiation fluxes). The predicted flame temperature and percentage combustibles in bottom ash are in good agreement with the measurements. The developed model can find different applications, both in research and practice. (c) 2006 Elsevier Ltd. All rights reserved.",
journal = "International Journal of Heat and Mass Transfer",
title = "Three-dimensional modeling of utility boiler pulverized coal tangentially fired furnace",
volume = "49",
number = "19-20",
pages = "3371-3378",
doi = "10.1016/j.ijheatmasstransfer.2006.03.022"
}

Belošević, S., Sijercic, M., Oka, S. N.,& Tucaković, D. R.. (2006). Three-dimensional modeling of utility boiler pulverized coal tangentially fired furnace. in International Journal of Heat and Mass Transfer, 49(19-20), 3371-3378.
https://doi.org/10.1016/j.ijheatmasstransfer.2006.03.022

Belošević S, Sijercic M, Oka SN, Tucaković DR. Three-dimensional modeling of utility boiler pulverized coal tangentially fired furnace. in International Journal of Heat and Mass Transfer. 2006;49(19-20):3371-3378.
doi:10.1016/j.ijheatmasstransfer.2006.03.022 .

Belošević, Srđan, Sijercic, Miroslav, Oka, Simeon N., Tucaković, Dragan R., "Three-dimensional modeling of utility boiler pulverized coal tangentially fired furnace" in International Journal of Heat and Mass Transfer, 49, no. 19-20 (2006):3371-3378,
https://doi.org/10.1016/j.ijheatmasstransfer.2006.03.022 . .

TY  - CONF
AU  - Oka, Simeon N.
AU  - Grubor, Borislav
AU  - Dakić, Dragoljub V.
AU  - Ilic, M.
AU  - Manovic, V.
AU  - Erić, Milić D.
AU  - Paprika, Milijana
AU  - Oka, Nikola
AU  - Belošević, Srđan
AU  - Mladenovic, R.
AU  - Crnomarković, Nenad Đ.
PY  - 2005
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6638
AB  - The results of the detailed investigations of behavior of lignites Kolubara and Kovin, in fluidized bed combustion are presented in the paper. Investigation was carried out due to the interest of the Serbian Electric Power Production Company to use CFBC boilers in the process of refurbishment of old pulverized coal combustion boilers. As a part of a feasibility study for CFBC use in power plants in Serbia, investigation of combustion characteristics of lignites was performed using original methodology introduced many years ago by Laboratory for Thermal Engineering and Energy. Methodology was approved by numerous investigations of more than 20 Yugoslav coals for FBC combustion, with the aim to determine design data for bubbling FBC boilers. The main attention in present investigation was paid to the problem of using methodology developed for bubbling FBC in the conditions present in CFBC boilers. Four samples of Kolubara lignite, with heat capacity from 2.5 to 8.5 MJ/kg, and different ash contents were investigated, and also lignite Kovin in the same range of heat capacity. Investigations were performed in three phases: (1) ultimate and proximate analysis, determination of ash sintering temperature by standard method and in fluidized bed laboratory oven, (2) investigations in laboratory fluidized bed furnace and determination of coal particle fragmentation, burning rate, start-up temperature and self-sulfure-capture and (3) investigation of combustion in pilot-plant in stationary combustion conditions. In conclusion, suitability of results obtained in BFBC conditions is approved, and earlier statement that lignites are suitable for BFBC is confirmed by the statement that lignites are even more suitable for burning in CFBC boilers. Considering differences between combustion and flow conditions in bubbling and circulating FBC boilers, behavior of the lignites in CFBC is discussed in details and optimal regime parameters of the CFBC boilers are determined. The results obtained will be used by Serbian Electric Power Production Company for evaluation of bid for CFBC boiler implementation in refurbishment of old thermal power plants.
T1  - Investigation of the suitability of Serbian lignites for burning in CFBC boilers
SP  - 13
EP  - 25
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6638
ER  - 

@conference{
author = "Oka, Simeon N. and Grubor, Borislav and Dakić, Dragoljub V. and Ilic, M. and Manovic, V. and Erić, Milić D. and Paprika, Milijana and Oka, Nikola and Belošević, Srđan and Mladenovic, R. and Crnomarković, Nenad Đ.",
year = "2005",
abstract = "The results of the detailed investigations of behavior of lignites Kolubara and Kovin, in fluidized bed combustion are presented in the paper. Investigation was carried out due to the interest of the Serbian Electric Power Production Company to use CFBC boilers in the process of refurbishment of old pulverized coal combustion boilers. As a part of a feasibility study for CFBC use in power plants in Serbia, investigation of combustion characteristics of lignites was performed using original methodology introduced many years ago by Laboratory for Thermal Engineering and Energy. Methodology was approved by numerous investigations of more than 20 Yugoslav coals for FBC combustion, with the aim to determine design data for bubbling FBC boilers. The main attention in present investigation was paid to the problem of using methodology developed for bubbling FBC in the conditions present in CFBC boilers. Four samples of Kolubara lignite, with heat capacity from 2.5 to 8.5 MJ/kg, and different ash contents were investigated, and also lignite Kovin in the same range of heat capacity. Investigations were performed in three phases: (1) ultimate and proximate analysis, determination of ash sintering temperature by standard method and in fluidized bed laboratory oven, (2) investigations in laboratory fluidized bed furnace and determination of coal particle fragmentation, burning rate, start-up temperature and self-sulfure-capture and (3) investigation of combustion in pilot-plant in stationary combustion conditions. In conclusion, suitability of results obtained in BFBC conditions is approved, and earlier statement that lignites are suitable for BFBC is confirmed by the statement that lignites are even more suitable for burning in CFBC boilers. Considering differences between combustion and flow conditions in bubbling and circulating FBC boilers, behavior of the lignites in CFBC is discussed in details and optimal regime parameters of the CFBC boilers are determined. The results obtained will be used by Serbian Electric Power Production Company for evaluation of bid for CFBC boiler implementation in refurbishment of old thermal power plants.",
title = "Investigation of the suitability of Serbian lignites for burning in CFBC boilers",
pages = "13-25",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6638"
}

Oka, S. N., Grubor, B., Dakić, D. V., Ilic, M., Manovic, V., Erić, M. D., Paprika, M., Oka, N., Belošević, S., Mladenovic, R.,& Crnomarković, N. Đ.. (2005). Investigation of the suitability of Serbian lignites for burning in CFBC boilers. , 13-25.
https://hdl.handle.net/21.15107/rcub_vinar_6638

Oka SN, Grubor B, Dakić DV, Ilic M, Manovic V, Erić MD, Paprika M, Oka N, Belošević S, Mladenovic R, Crnomarković NĐ. Investigation of the suitability of Serbian lignites for burning in CFBC boilers. 2005;:13-25.
https://hdl.handle.net/21.15107/rcub_vinar_6638 .

Oka, Simeon N., Grubor, Borislav, Dakić, Dragoljub V., Ilic, M., Manovic, V., Erić, Milić D., Paprika, Milijana, Oka, Nikola, Belošević, Srđan, Mladenovic, R., Crnomarković, Nenad Đ., "Investigation of the suitability of Serbian lignites for burning in CFBC boilers" (2005):13-25,
https://hdl.handle.net/21.15107/rcub_vinar_6638 .

TY  - JOUR
AU  - Nemoda, Stevan
AU  - Bakić, Vukman
AU  - Oka, Simeon N.
AU  - Živković, Goran S.
AU  - Crnomarković, Nenad Đ.
PY  - 2005
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2929
AB  - In this paper the results of experimental and numerical investigations of swirl burner were presented. Mathematical model for prediction of velocity, temperature and concentration fields of axisymmetrical confined swirl turbulent flame was developed. Model consists of few mutually coupled segments related to basic processes in turbulent flows with combustion. The original combustion rate model based on the ideal reacting hypothesis within fine structure of turbulence was applied. The comparison of the experimental results with computation showed satisfactorily agreement between the model and the experiment. This analysis also showed the importance of the proposed combustion rate model with simultaneous influence of both chemical kinetics and turbulent effects. (c) 2005 Elsevier Ltd. All rights reserved.
T2  - International Journal of Heat and Mass Transfer
T1  - Experimental and numerical investigation of gaseous fuel combustion in swirl chamber
VL  - 48
IS  - 21-22
SP  - 4623
EP  - 4632
DO  - 10.1016/j.ijheatmasstransfer.2005.04.004
ER  - 

@article{
author = "Nemoda, Stevan and Bakić, Vukman and Oka, Simeon N. and Živković, Goran S. and Crnomarković, Nenad Đ.",
year = "2005",
abstract = "In this paper the results of experimental and numerical investigations of swirl burner were presented. Mathematical model for prediction of velocity, temperature and concentration fields of axisymmetrical confined swirl turbulent flame was developed. Model consists of few mutually coupled segments related to basic processes in turbulent flows with combustion. The original combustion rate model based on the ideal reacting hypothesis within fine structure of turbulence was applied. The comparison of the experimental results with computation showed satisfactorily agreement between the model and the experiment. This analysis also showed the importance of the proposed combustion rate model with simultaneous influence of both chemical kinetics and turbulent effects. (c) 2005 Elsevier Ltd. All rights reserved.",
journal = "International Journal of Heat and Mass Transfer",
title = "Experimental and numerical investigation of gaseous fuel combustion in swirl chamber",
volume = "48",
number = "21-22",
pages = "4623-4632",
doi = "10.1016/j.ijheatmasstransfer.2005.04.004"
}

Nemoda, S., Bakić, V., Oka, S. N., Živković, G. S.,& Crnomarković, N. Đ.. (2005). Experimental and numerical investigation of gaseous fuel combustion in swirl chamber. in International Journal of Heat and Mass Transfer, 48(21-22), 4623-4632.
https://doi.org/10.1016/j.ijheatmasstransfer.2005.04.004

Nemoda S, Bakić V, Oka SN, Živković GS, Crnomarković NĐ. Experimental and numerical investigation of gaseous fuel combustion in swirl chamber. in International Journal of Heat and Mass Transfer. 2005;48(21-22):4623-4632.
doi:10.1016/j.ijheatmasstransfer.2005.04.004 .

Nemoda, Stevan, Bakić, Vukman, Oka, Simeon N., Živković, Goran S., Crnomarković, Nenad Đ., "Experimental and numerical investigation of gaseous fuel combustion in swirl chamber" in International Journal of Heat and Mass Transfer, 48, no. 21-22 (2005):4623-4632,
https://doi.org/10.1016/j.ijheatmasstransfer.2005.04.004 . .

TY  - JOUR
AU  - Stefanović, Predrag
AU  - Cvetinović, Dejan
AU  - Živković, Goran
AU  - Oka, Simeon
AU  - Pavlović, Pavle
PY  - 2003
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12383
AB  - A numerical 3D Euler-Lagrangian stochastic-deterministic (LSD) model of two-phase flow laden with solid particles was developed. The model includes the relevant physical effects, namely phase interaction, panicle dispersion by turbulence, lift forces, particle-particle collisions, particle-wall collisions, heat and mass transfer between phases, melting and evaporation of particles, vapour diffusion in the gas flow. It was applied to simulate the processes in thermal plasma reactors, designed for the production of the ceramic powders. Paper presents results of extensive numerical simulation provided (a) to determine critical mechanism of interphase heat and mass transfer in plasma flows, (b) to show relative influence of some plasma reactor parameters on solid precursor evaporation efficiency: 1 - inlet plasma temperature, 2 - inlet plasma velocity, 3 - particle initial diameter, 4 - particle injection angle a, and 5 - reactor wall temperature, (c) to analyze the possibilities for high evaporation efficiency of different starting solid precursors (Si, Al, Ti, and B2O3 powder), and (d) to compare different plasma reactor configurations in conjunction with disperse material evaporation efficiency.
T2  - Thermal Science
T1  - Numerical modeling of disperse material evaporation in axisymmetric thermal plasma reactor
VL  - 7
IS  - 1
SP  - 63
EP  - 99
DO  - 10.2298/TSCI0301063S
ER  - 

@article{
author = "Stefanović, Predrag and Cvetinović, Dejan and Živković, Goran and Oka, Simeon and Pavlović, Pavle",
year = "2003",
abstract = "A numerical 3D Euler-Lagrangian stochastic-deterministic (LSD) model of two-phase flow laden with solid particles was developed. The model includes the relevant physical effects, namely phase interaction, panicle dispersion by turbulence, lift forces, particle-particle collisions, particle-wall collisions, heat and mass transfer between phases, melting and evaporation of particles, vapour diffusion in the gas flow. It was applied to simulate the processes in thermal plasma reactors, designed for the production of the ceramic powders. Paper presents results of extensive numerical simulation provided (a) to determine critical mechanism of interphase heat and mass transfer in plasma flows, (b) to show relative influence of some plasma reactor parameters on solid precursor evaporation efficiency: 1 - inlet plasma temperature, 2 - inlet plasma velocity, 3 - particle initial diameter, 4 - particle injection angle a, and 5 - reactor wall temperature, (c) to analyze the possibilities for high evaporation efficiency of different starting solid precursors (Si, Al, Ti, and B2O3 powder), and (d) to compare different plasma reactor configurations in conjunction with disperse material evaporation efficiency.",
journal = "Thermal Science",
title = "Numerical modeling of disperse material evaporation in axisymmetric thermal plasma reactor",
volume = "7",
number = "1",
pages = "63-99",
doi = "10.2298/TSCI0301063S"
}

Stefanović, P., Cvetinović, D., Živković, G., Oka, S.,& Pavlović, P.. (2003). Numerical modeling of disperse material evaporation in axisymmetric thermal plasma reactor. in Thermal Science, 7(1), 63-99.
https://doi.org/10.2298/TSCI0301063S

Stefanović P, Cvetinović D, Živković G, Oka S, Pavlović P. Numerical modeling of disperse material evaporation in axisymmetric thermal plasma reactor. in Thermal Science. 2003;7(1):63-99.
doi:10.2298/TSCI0301063S .

Stefanović, Predrag, Cvetinović, Dejan, Živković, Goran, Oka, Simeon, Pavlović, Pavle, "Numerical modeling of disperse material evaporation in axisymmetric thermal plasma reactor" in Thermal Science, 7, no. 1 (2003):63-99,
https://doi.org/10.2298/TSCI0301063S . .

TY  - JOUR
AU  - Grubor, Borislav
AU  - Manovic, V
AU  - Oka, Simeon N.
PY  - 2003
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2688
AB  - The process of sulfur self-retention (SSR) occurs as a result of the reactions between the mineral matter in coal ash and the SO2 evolved during coal combustion. Consequently, the emission of SO2 may be significantly reduced. The results of experimental investigations and modeling of SSR is presented in this work. The transformations of sulfur forms during devolatilization are taken into account via a correlation for the amount of sulfur that remains in the char, after devolatilization. A novel approach has been applied for modeling SSR during char combustion, closely related to the grain model used for SO2 retention by limestone as a sorbent. It is assumed that SSR is a result of the reaction between SO2 and CaO in the form of uniformly distributed micro-grains in char. An unreacted shrinking core model is adopted for the reactions between the CaO micro-grains and SO2. The comparison with the experimentally obtained values in a fluidized bed reactor and in a laboratory oven, using coals of different rank (fixed carbon over volatile matter ratio, C-fix/VM = 0.75-7.40), content of sulfur forms (total 0.84-6.04%, organic 0.71-4.71%, pyritic 0-2.57%) and molar Ca/S ratio (0.34-3.17), has shown that the model can adequately predict the kinetics of the process, the levels of the obtained values of SSR efficiencies, as well as the influence of temperature, coal particle size and the surrounding conditions. (C) 2003 Elsevier B.V. All rights reserved.
T2  - Chemical Engineering Journal
T1  - An experimental and modeling study of the contribution of coal ash to SO2 capture in fluidized bed combustion
VL  - 96
IS  - 1-3
SP  - 157
EP  - 169
DO  - 10.1016/j.cej.2003.08.021
ER  - 

@article{
author = "Grubor, Borislav and Manovic, V and Oka, Simeon N.",
year = "2003",
abstract = "The process of sulfur self-retention (SSR) occurs as a result of the reactions between the mineral matter in coal ash and the SO2 evolved during coal combustion. Consequently, the emission of SO2 may be significantly reduced. The results of experimental investigations and modeling of SSR is presented in this work. The transformations of sulfur forms during devolatilization are taken into account via a correlation for the amount of sulfur that remains in the char, after devolatilization. A novel approach has been applied for modeling SSR during char combustion, closely related to the grain model used for SO2 retention by limestone as a sorbent. It is assumed that SSR is a result of the reaction between SO2 and CaO in the form of uniformly distributed micro-grains in char. An unreacted shrinking core model is adopted for the reactions between the CaO micro-grains and SO2. The comparison with the experimentally obtained values in a fluidized bed reactor and in a laboratory oven, using coals of different rank (fixed carbon over volatile matter ratio, C-fix/VM = 0.75-7.40), content of sulfur forms (total 0.84-6.04%, organic 0.71-4.71%, pyritic 0-2.57%) and molar Ca/S ratio (0.34-3.17), has shown that the model can adequately predict the kinetics of the process, the levels of the obtained values of SSR efficiencies, as well as the influence of temperature, coal particle size and the surrounding conditions. (C) 2003 Elsevier B.V. All rights reserved.",
journal = "Chemical Engineering Journal",
title = "An experimental and modeling study of the contribution of coal ash to SO2 capture in fluidized bed combustion",
volume = "96",
number = "1-3",
pages = "157-169",
doi = "10.1016/j.cej.2003.08.021"
}

Grubor, B., Manovic, V.,& Oka, S. N.. (2003). An experimental and modeling study of the contribution of coal ash to SO2 capture in fluidized bed combustion. in Chemical Engineering Journal, 96(1-3), 157-169.
https://doi.org/10.1016/j.cej.2003.08.021

Grubor B, Manovic V, Oka SN. An experimental and modeling study of the contribution of coal ash to SO2 capture in fluidized bed combustion. in Chemical Engineering Journal. 2003;96(1-3):157-169.
doi:10.1016/j.cej.2003.08.021 .

Grubor, Borislav, Manovic, V, Oka, Simeon N., "An experimental and modeling study of the contribution of coal ash to SO2 capture in fluidized bed combustion" in Chemical Engineering Journal, 96, no. 1-3 (2003):157-169,
https://doi.org/10.1016/j.cej.2003.08.021 . .

TY  - JOUR
AU  - Bakić, Vukman
AU  - Oka, Simeon N.
PY  - 2001
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2459
AB  - Entrainment of surrounding air into premixed acetylene flame leads to a change in velocity and temperature fields. In this paper the mixing process between the premixed acetylene flame and surrounding air, in different regions of the flame, has been analyzed. Conditional and unconditional statistics of the LDA signals were performed using jet and/or air seed. Compared to commonly used unconditional statistics, conditional statistics of velocity fluctuations can give us more data about intensity of turbulent mixing in the flame. Mean velocity, turbulence intensity and probability density function of instantaneous velocities have been measured at different cross-sections of the flame, for premixed acetylene/air mixture with stoichiometric ratio. The velocity field measurements were performed with the laser-Doppler anemometer, while for the temperature field measurements Pt-PtRh10% thermocouple was used. Relations between mean velocities and probability density functions have been established in cases of conditional and unconditional seeding. Mixing factor has been defined as a measure of mixing intensity.
T2  - Combustion Science and Technology
T1  - Entrainment of cold gas into turbulent premixed acetylene flame
VL  - 164
SP  - 95
EP  - 112
DO  - 10.1080/00102200108952163
ER  - 

@article{
author = "Bakić, Vukman and Oka, Simeon N.",
year = "2001",
abstract = "Entrainment of surrounding air into premixed acetylene flame leads to a change in velocity and temperature fields. In this paper the mixing process between the premixed acetylene flame and surrounding air, in different regions of the flame, has been analyzed. Conditional and unconditional statistics of the LDA signals were performed using jet and/or air seed. Compared to commonly used unconditional statistics, conditional statistics of velocity fluctuations can give us more data about intensity of turbulent mixing in the flame. Mean velocity, turbulence intensity and probability density function of instantaneous velocities have been measured at different cross-sections of the flame, for premixed acetylene/air mixture with stoichiometric ratio. The velocity field measurements were performed with the laser-Doppler anemometer, while for the temperature field measurements Pt-PtRh10% thermocouple was used. Relations between mean velocities and probability density functions have been established in cases of conditional and unconditional seeding. Mixing factor has been defined as a measure of mixing intensity.",
journal = "Combustion Science and Technology",
title = "Entrainment of cold gas into turbulent premixed acetylene flame",
volume = "164",
pages = "95-112",
doi = "10.1080/00102200108952163"
}

Bakić, V.,& Oka, S. N.. (2001). Entrainment of cold gas into turbulent premixed acetylene flame. in Combustion Science and Technology, 164, 95-112.
https://doi.org/10.1080/00102200108952163

Bakić V, Oka SN. Entrainment of cold gas into turbulent premixed acetylene flame. in Combustion Science and Technology. 2001;164:95-112.
doi:10.1080/00102200108952163 .

Bakić, Vukman, Oka, Simeon N., "Entrainment of cold gas into turbulent premixed acetylene flame" in Combustion Science and Technology, 164 (2001):95-112,
https://doi.org/10.1080/00102200108952163 . .