Weighted Sum of Gray Gases Model Optimization for Numerical Investigations of Processes inside Pulverized Coal-Fired Furnaces
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2017
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The effects of the number of significant figures (NSF) in the interpolation polynomial coefficients (IPCs) of the weighted sum of gray gases model (WSGM) on results of numerical investigations and WSGM optimization were investigated. The investigation was conducted using numerical simulations of the processes inside a pulverized coal-fired furnace. The radiative properties of the gas phase were determined using the simple gray gas model (SG), two-term WSGM (W2), and three-term WSGM (W3). Ten sets of the IPCs with the same NSF were formed for every weighting coefficient in both W2 and W3. The average and maximal relative difference values of the flame temperatures, wall temperatures, and wall heat fluxes were determined. The investigation showed that the results of numerical investigations were affected by the NSF unless it exceeded certain value. The increase in the NSF did not necessarily lead to WSGM optimization. The combination of the NSF (CNSF) was the necessary requirement for WS...GM optimization.
Ključne reči:
Furnace / Numerical simulation / Significant figure / Weighted sum of gray gases model / OptimizationIzvor:
Journal of Thermal Science, 2017, 26, 6, 552-559Finansiranje / projekti:
- Povećanje energetske i ekološke efikasnosti procesa u ložištu za ugljeni prah i optimizacija izlazne grejne površine energetskog parnog kotla primenom sopstvenih softverskih alata (RS-MESTD-Technological Development (TD or TR)-33018)
DOI: 10.1007/s11630-017-0973-0
ISSN: 1003-2169; 1993-033X
WoS: 000415001900009
Scopus: 2-s2.0-85033710013
Institucija/grupa
VinčaTY - JOUR AU - Crnomarković, Nenad Đ. AU - Belošević, Srđan AU - Tomanović, Ivan D. AU - Milićević, Aleksandar PY - 2017 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1822 AB - The effects of the number of significant figures (NSF) in the interpolation polynomial coefficients (IPCs) of the weighted sum of gray gases model (WSGM) on results of numerical investigations and WSGM optimization were investigated. The investigation was conducted using numerical simulations of the processes inside a pulverized coal-fired furnace. The radiative properties of the gas phase were determined using the simple gray gas model (SG), two-term WSGM (W2), and three-term WSGM (W3). Ten sets of the IPCs with the same NSF were formed for every weighting coefficient in both W2 and W3. The average and maximal relative difference values of the flame temperatures, wall temperatures, and wall heat fluxes were determined. The investigation showed that the results of numerical investigations were affected by the NSF unless it exceeded certain value. The increase in the NSF did not necessarily lead to WSGM optimization. The combination of the NSF (CNSF) was the necessary requirement for WSGM optimization. T2 - Journal of Thermal Science T1 - Weighted Sum of Gray Gases Model Optimization for Numerical Investigations of Processes inside Pulverized Coal-Fired Furnaces VL - 26 IS - 6 SP - 552 EP - 559 DO - 10.1007/s11630-017-0973-0 ER -
@article{ author = "Crnomarković, Nenad Đ. and Belošević, Srđan and Tomanović, Ivan D. and Milićević, Aleksandar", year = "2017", abstract = "The effects of the number of significant figures (NSF) in the interpolation polynomial coefficients (IPCs) of the weighted sum of gray gases model (WSGM) on results of numerical investigations and WSGM optimization were investigated. The investigation was conducted using numerical simulations of the processes inside a pulverized coal-fired furnace. The radiative properties of the gas phase were determined using the simple gray gas model (SG), two-term WSGM (W2), and three-term WSGM (W3). Ten sets of the IPCs with the same NSF were formed for every weighting coefficient in both W2 and W3. The average and maximal relative difference values of the flame temperatures, wall temperatures, and wall heat fluxes were determined. The investigation showed that the results of numerical investigations were affected by the NSF unless it exceeded certain value. The increase in the NSF did not necessarily lead to WSGM optimization. The combination of the NSF (CNSF) was the necessary requirement for WSGM optimization.", journal = "Journal of Thermal Science", title = "Weighted Sum of Gray Gases Model Optimization for Numerical Investigations of Processes inside Pulverized Coal-Fired Furnaces", volume = "26", number = "6", pages = "552-559", doi = "10.1007/s11630-017-0973-0" }
Crnomarković, N. Đ., Belošević, S., Tomanović, I. D.,& Milićević, A.. (2017). Weighted Sum of Gray Gases Model Optimization for Numerical Investigations of Processes inside Pulverized Coal-Fired Furnaces. in Journal of Thermal Science, 26(6), 552-559. https://doi.org/10.1007/s11630-017-0973-0
Crnomarković NĐ, Belošević S, Tomanović ID, Milićević A. Weighted Sum of Gray Gases Model Optimization for Numerical Investigations of Processes inside Pulverized Coal-Fired Furnaces. in Journal of Thermal Science. 2017;26(6):552-559. doi:10.1007/s11630-017-0973-0 .
Crnomarković, Nenad Đ., Belošević, Srđan, Tomanović, Ivan D., Milićević, Aleksandar, "Weighted Sum of Gray Gases Model Optimization for Numerical Investigations of Processes inside Pulverized Coal-Fired Furnaces" in Journal of Thermal Science, 26, no. 6 (2017):552-559, https://doi.org/10.1007/s11630-017-0973-0 . .