Impact of Radiation on the Wall Heat Load at a Test Bench Gas Turbine Combustion Chamber: Measurements and CFD Simulation
Impact of Radiation on the Wall Heat Load at a Test Bench Gas Turbine Combustion Chamber: Measurements and CFD Simulation
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辐射对试验台燃气轮机燃烧室壁热负荷的影响：测量和 CFD 模拟
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
M. Aigner
中科院分区：
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作者：
R. Dannecker;K.;B. Noll;R. Koch;Matthias Hase;W. Krebs;M. Aigner
已经进行了实验和数值工作，以确定模型燃气轮机燃烧室的衬里结构处的壁热负荷。测量的室内速度和温度场的横截面轮廓可用于验证燃烧流的各种 CFD 计算。事实证明，只有对所有衬里壁的热边界条件进行特殊处理才能真正获得适当的壁热通量值。辐射建模包括两个辐射特性模型（SG单一灰气和WSSG灰气加权和）和三个辐射传输模型（P1、DT离散传输、MC蒙特卡罗）。 WSGG 模型的性能已通过图表进行了评估，并研究了辐射对衬里壁温度分布的影响。实验值与输运和辐射特性模型的最佳组合匹配在3%偏差以内。辐射贡献了总壁热通量的20-30%。目前的方法使西门子 PG 能够更精确地进行燃烧器的热设计。版权所有 © 2007 by ASME
Experimental and numerical work has been carried out to determine the wall heat load at the liner structure of a model gas turbine combustion chamber. Measured cross-sectional profiles of the velocity and temperature field inside the chamber could be used to validate various CFD calculations of the combustion flow. It turned out that only a special treatment of the thermal boundary conditions at all liner walls would actually lead to appropriate values of the wall heat flux. Radiation modeling included two radiative properties models (SG single gray gas and WSSG weighted sum of gray gases) and three radiation transport models (P1, DT discrete transfer, MC Monte Carlo). The performance of the WSGG model has been assessed with charts and the impact of the radiation on the liner wall temperature distribution has been studied. The experimental values are matched within 3% deviation with the best combination of transport and radiation property models. The radiation contributes to 20-30% of the total wall heat flux. The present approach enables Siemens PG to access the thermal design of combustors more precisely.Copyright © 2007 by ASME