Assessment of numerical radiation models on the heat transfer of an aero-engine combustion chamber
Assessment of numerical radiation models on the heat transfer of an aero-engine combustion chamber
复制标题
航空发动机燃烧室传热数值辐射模型评估
DOI:
10.1016/j.csite.2020.100772
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发表时间:
2020
影响因子:
6.8
通讯作者:
Gamil A
中科院分区:
文献类型:
--
作者:
Gamil A
Thermal radiation is the most dominant type of heat transfer inside the combustion chamber, which can directly affect the temperature distributions at the combustor walls. This paper provides a comprehensive analysis of the effects of two radiation models on the flame and liner-walls temperatures. A combustion chamber used in the Rolls-Royce-RB-183 turbofan engine was examined in this study by integrating a solid combustor model with the numerical fluid domain. The results indicated that the implementation of radiation models shrinks the flame peak-temperature and altered temperature distribution across the liner. The Discrete Ordinates Method (DOM) estimated a 10% higher temperature at the front part of the liner compared to the non-radiation model and 15% less than the P-1 radiation method. After the dilution zone, the DOM and P-1 models estimated respectively 15% and 25% reduction in the liner temperature compared to the non-radiation combustor. The radiation models have also down predicted the flame temperature by 200 K and more than 200 K for DOM and P-1 case respectively. The results also showed that the emissivity value had minimal effects on the combustor temperature distribution. The DOM considered being more accurate to estimate the combustor wall and flow temperatures compared to the P-1 radiation method.
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影响因子:
1.3
作者:
L. Wang;M. Modest;D. Haworth;S. Turns
通讯作者:
L. Wang;M. Modest;D. Haworth;S. Turns
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
M. Paul;W. Jones
通讯作者:
W. Jones
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
G. Li;M. Modest
通讯作者:
M. Modest
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
R. Dannecker;K.;B. Noll;R. Koch;Matthias Hase;W. Krebs;M. Aigner
通讯作者:
M. Aigner