Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace
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Crnomarković, Nenad Đ.Sijercic, Miroslav
Belošević, Srđan
Stanković, Branislav D.
Tucaković, Dragan R.
Živanović, Titoslav
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A possibility of simplification of the scattering phase function of a pulverized coal flame was analyzed in the paper. It was showed that the type of radiation scattering of a pulverized coal flame is between two limiting cases: isotropic and forward scattering. A comprehensive mathematical model of a tangentially fired furnace by pulverized coal was formed. Radiative heat transfer was modeled using the six-flux model. Grid independent results of the numerical simulations were obtained. The mathematical model was verified by comparison of the results of numerical simulations with results of measurements. The influence of the type of radiation scattering on results of numerical simulation was analyzed through the relative and average differences of the gas-phase temperatures, the total radiation fluxes, and the absorbed wall fluxes of the left furnace wall. The investigation showed that the total radiation fluxes were considerably influenced by the type of radiation scattering. On the o...ther hand, the gas-phase temperatures and the absorbed wall fluxes were much less influenced by the type of radiation scattering. The results justify the use of the scattering phase function corresponding to isotropic scattering in radiation models of comprehensive mathematical models of pulverized coal fired furnaces. (C) 2012 Elsevier Ltd. All rights reserved.
Keywords:
Numerical simulation / Thermal radiation / Radiation scattering / Six-flux model / Pulverized coalSource:
Energy, 2012, 45, 1, 160-168Funding / projects:
- Increase in energy and ecology efficiency of processes in pulverized coal-fired furnace and optimization of utility steam boiler air preheater by using in-house developed software tools (RS-MESTD-Technological Development (TD or TR)-33018)
DOI: 10.1016/j.energy.2012.01.019
ISSN: 0360-5442
WoS: 000309243700019
Scopus: 2-s2.0-84865423793
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VinčaTY - JOUR AU - Crnomarković, Nenad Đ. AU - Sijercic, Miroslav AU - Belošević, Srđan AU - Stanković, Branislav D. AU - Tucaković, Dragan R. AU - Živanović, Titoslav PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5053 AB - A possibility of simplification of the scattering phase function of a pulverized coal flame was analyzed in the paper. It was showed that the type of radiation scattering of a pulverized coal flame is between two limiting cases: isotropic and forward scattering. A comprehensive mathematical model of a tangentially fired furnace by pulverized coal was formed. Radiative heat transfer was modeled using the six-flux model. Grid independent results of the numerical simulations were obtained. The mathematical model was verified by comparison of the results of numerical simulations with results of measurements. The influence of the type of radiation scattering on results of numerical simulation was analyzed through the relative and average differences of the gas-phase temperatures, the total radiation fluxes, and the absorbed wall fluxes of the left furnace wall. The investigation showed that the total radiation fluxes were considerably influenced by the type of radiation scattering. On the other hand, the gas-phase temperatures and the absorbed wall fluxes were much less influenced by the type of radiation scattering. The results justify the use of the scattering phase function corresponding to isotropic scattering in radiation models of comprehensive mathematical models of pulverized coal fired furnaces. (C) 2012 Elsevier Ltd. All rights reserved. T2 - Energy T1 - Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace VL - 45 IS - 1 SP - 160 EP - 168 DO - 10.1016/j.energy.2012.01.019 ER -
@article{ author = "Crnomarković, Nenad Đ. and Sijercic, Miroslav and Belošević, Srđan and Stanković, Branislav D. and Tucaković, Dragan R. and Živanović, Titoslav", year = "2012", abstract = "A possibility of simplification of the scattering phase function of a pulverized coal flame was analyzed in the paper. It was showed that the type of radiation scattering of a pulverized coal flame is between two limiting cases: isotropic and forward scattering. A comprehensive mathematical model of a tangentially fired furnace by pulverized coal was formed. Radiative heat transfer was modeled using the six-flux model. Grid independent results of the numerical simulations were obtained. The mathematical model was verified by comparison of the results of numerical simulations with results of measurements. The influence of the type of radiation scattering on results of numerical simulation was analyzed through the relative and average differences of the gas-phase temperatures, the total radiation fluxes, and the absorbed wall fluxes of the left furnace wall. The investigation showed that the total radiation fluxes were considerably influenced by the type of radiation scattering. On the other hand, the gas-phase temperatures and the absorbed wall fluxes were much less influenced by the type of radiation scattering. The results justify the use of the scattering phase function corresponding to isotropic scattering in radiation models of comprehensive mathematical models of pulverized coal fired furnaces. (C) 2012 Elsevier Ltd. All rights reserved.", journal = "Energy", title = "Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace", volume = "45", number = "1", pages = "160-168", doi = "10.1016/j.energy.2012.01.019" }
Crnomarković, N. Đ., Sijercic, M., Belošević, S., Stanković, B. D., Tucaković, D. R.,& Živanović, T.. (2012). Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace. in Energy, 45(1), 160-168. https://doi.org/10.1016/j.energy.2012.01.019
Crnomarković NĐ, Sijercic M, Belošević S, Stanković BD, Tucaković DR, Živanović T. Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace. in Energy. 2012;45(1):160-168. doi:10.1016/j.energy.2012.01.019 .
Crnomarković, Nenad Đ., Sijercic, Miroslav, Belošević, Srđan, Stanković, Branislav D., Tucaković, Dragan R., Živanović, Titoslav, "Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace" in Energy, 45, no. 1 (2012):160-168, https://doi.org/10.1016/j.energy.2012.01.019 . .