TY  - JOUR
AU  - Erić, Milić D.
AU  - Stakić, Milan B.
AU  - Banjac, Miloš J.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1142
AB  - An overview of the current status of low-rank coal upgrading technologies is presented in the paper, particularly with respect to drying and dewatering procedures. In order to calculate the significant parameters of the moisture removal process, a model of convective coal drying in a fluid bed, based on the two-phase (bubbling) fluidization model proposed by Kunii and Levenspiel, is developed and presented. Product-specific data (intraparticle mass transfer, gas-solid moisture equilibrium) related to the particular coal variety addressed here (Kolubara lignite) are obtained through preliminary investigations. Effective thermal conductivity of the packed bed as defined by Zehner/Bauer/Schlunder is used to define heat transfer mechanisms occurring in the suspension phase of the fluid bed. A completely new set of experimental data obtained has been successfully used to validate the model additionally.
T2  - Thermal Science
T1  - Fluid Bed Drying as Upgrading Technology for Feasible Treatment of Kolubara Lignite
VL  - 20
SP  - S167
EP  - S181
DO  - 10.2298/TSCI150725172E
ER  - 

@article{
author = "Erić, Milić D. and Stakić, Milan B. and Banjac, Miloš J.",
year = "2016",
abstract = "An overview of the current status of low-rank coal upgrading technologies is presented in the paper, particularly with respect to drying and dewatering procedures. In order to calculate the significant parameters of the moisture removal process, a model of convective coal drying in a fluid bed, based on the two-phase (bubbling) fluidization model proposed by Kunii and Levenspiel, is developed and presented. Product-specific data (intraparticle mass transfer, gas-solid moisture equilibrium) related to the particular coal variety addressed here (Kolubara lignite) are obtained through preliminary investigations. Effective thermal conductivity of the packed bed as defined by Zehner/Bauer/Schlunder is used to define heat transfer mechanisms occurring in the suspension phase of the fluid bed. A completely new set of experimental data obtained has been successfully used to validate the model additionally.",
journal = "Thermal Science",
title = "Fluid Bed Drying as Upgrading Technology for Feasible Treatment of Kolubara Lignite",
volume = "20",
pages = "S167-S181",
doi = "10.2298/TSCI150725172E"
}

Erić, M. D., Stakić, M. B.,& Banjac, M. J.. (2016). Fluid Bed Drying as Upgrading Technology for Feasible Treatment of Kolubara Lignite. in Thermal Science, 20, S167-S181.
https://doi.org/10.2298/TSCI150725172E

Erić MD, Stakić MB, Banjac MJ. Fluid Bed Drying as Upgrading Technology for Feasible Treatment of Kolubara Lignite. in Thermal Science. 2016;20:S167-S181.
doi:10.2298/TSCI150725172E .

Erić, Milić D., Stakić, Milan B., Banjac, Miloš J., "Fluid Bed Drying as Upgrading Technology for Feasible Treatment of Kolubara Lignite" in Thermal Science, 20 (2016):S167-S181,
https://doi.org/10.2298/TSCI150725172E . .

TY  - JOUR
AU  - Stakić, Milan B.
AU  - Živković, Goran S.
AU  - Sijercic, Miroslav A.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4285
AB  - The paper addresses numerical simulation of turbulent two-phase flow in a long vertical tube and turbulent two-phase free jet formed at the tube outlet, analyzing agreement between the numerical results and the results of corresponding experimental investigation carried out earlier. In the numerical analyses conducted, gas phase was modeled as an air flow (having a mass flow-rate in the range of 1.25-4.00 g/s), while the sand particles of two different sizes (0.25-0.30 and 0.8-1.0 mm) represented a discrete phase (particle to gas mass flow ratio of 0.72-4.08) in the two-phase flow considered. Gas-particle interaction was analyzed based on the gas velocities in the particle-laden two-phase flow and the particle-free gas flow, calculated and measured at various locations along the longitudinal axis and radius of the jet. Mathematical model of continuous phase flow was developed based on the single phase flow models, with certain corrections introduced to account for the effects of particles in the flow. In the simulation model developed, the flow analyzed was modeled as a two-phase mixture, with Eulerian simulation used to account for the gas phase behavior and the Lagrangian simulation modeling the particle movement in the two-phase flow considered. In order to appropriately close the system of time-averaged equations, k-epsilon turbulent model, deemed the most reliable, was used. Phase coupling i.e. fluid-particle interaction was modeled using the PSI-CELL concept. The results obtained via numerical simulation have shown a good agreement with the experimental data acquired. (C) 2011 Elsevier Ltd. All rights reserved.
T2  - International Journal of Heat and Mass Transfer
T1  - Numerical analysis of discrete phase induced effects on a gas flow in a turbulent two-phase free jet
VL  - 54
IS  - 11-12
SP  - 2262
EP  - 2269
DO  - 10.1016/j.ijheatmasstransfer.2011.02.039
ER  - 

@article{
author = "Stakić, Milan B. and Živković, Goran S. and Sijercic, Miroslav A.",
year = "2011",
abstract = "The paper addresses numerical simulation of turbulent two-phase flow in a long vertical tube and turbulent two-phase free jet formed at the tube outlet, analyzing agreement between the numerical results and the results of corresponding experimental investigation carried out earlier. In the numerical analyses conducted, gas phase was modeled as an air flow (having a mass flow-rate in the range of 1.25-4.00 g/s), while the sand particles of two different sizes (0.25-0.30 and 0.8-1.0 mm) represented a discrete phase (particle to gas mass flow ratio of 0.72-4.08) in the two-phase flow considered. Gas-particle interaction was analyzed based on the gas velocities in the particle-laden two-phase flow and the particle-free gas flow, calculated and measured at various locations along the longitudinal axis and radius of the jet. Mathematical model of continuous phase flow was developed based on the single phase flow models, with certain corrections introduced to account for the effects of particles in the flow. In the simulation model developed, the flow analyzed was modeled as a two-phase mixture, with Eulerian simulation used to account for the gas phase behavior and the Lagrangian simulation modeling the particle movement in the two-phase flow considered. In order to appropriately close the system of time-averaged equations, k-epsilon turbulent model, deemed the most reliable, was used. Phase coupling i.e. fluid-particle interaction was modeled using the PSI-CELL concept. The results obtained via numerical simulation have shown a good agreement with the experimental data acquired. (C) 2011 Elsevier Ltd. All rights reserved.",
journal = "International Journal of Heat and Mass Transfer",
title = "Numerical analysis of discrete phase induced effects on a gas flow in a turbulent two-phase free jet",
volume = "54",
number = "11-12",
pages = "2262-2269",
doi = "10.1016/j.ijheatmasstransfer.2011.02.039"
}

Stakić, M. B., Živković, G. S.,& Sijercic, M. A.. (2011). Numerical analysis of discrete phase induced effects on a gas flow in a turbulent two-phase free jet. in International Journal of Heat and Mass Transfer, 54(11-12), 2262-2269.
https://doi.org/10.1016/j.ijheatmasstransfer.2011.02.039

Stakić MB, Živković GS, Sijercic MA. Numerical analysis of discrete phase induced effects on a gas flow in a turbulent two-phase free jet. in International Journal of Heat and Mass Transfer. 2011;54(11-12):2262-2269.
doi:10.1016/j.ijheatmasstransfer.2011.02.039 .

Stakić, Milan B., Živković, Goran S., Sijercic, Miroslav A., "Numerical analysis of discrete phase induced effects on a gas flow in a turbulent two-phase free jet" in International Journal of Heat and Mass Transfer, 54, no. 11-12 (2011):2262-2269,
https://doi.org/10.1016/j.ijheatmasstransfer.2011.02.039 . .