Influence of aerodynamic parameter on the temperature gradient and cooling efficiency for effusion wall cooling method
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Influence of aerodynamic parameter on the temperature gradient and cooling efficiency for effusion wall cooling method
Vol. 23, Issue 4, (2008)
作者机构:
北京航空航天大学 能源与动力工程学院 航空发动机气动热力重点实验室,北京,100083
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Published:2008
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XU Quan-hong, XU Jian, LIN Yu-zhen, et al. Influence of aerodynamic parameter on the temperature gradient and cooling efficiency for effusion wall cooling method[J]. 2008, 23(4).
DOI:
XU Quan-hong, XU Jian, LIN Yu-zhen, et al. Influence of aerodynamic parameter on the temperature gradient and cooling efficiency for effusion wall cooling method[J]. 2008, 23(4).DOI:
Influence of aerodynamic parameter on the temperature gradient and cooling efficiency for effusion wall cooling method
As one of the most important factors influencing the combustor life-span
the temperature gradient of the effusion wall
as well as the cooling efficiency were investigated experimentally under the guidance of similarity theory.The effects of the temperature ratio of the main flow to the cooling air
the speed ratio of the cooling air to the main flow and the speed of the main flow were analyzed and discussed.IRthermograph was used to perform local measurements of the surface temperature field.The results reveal that these parameters which are investigated in this paper have strong influence on the temperature gradient and the cooling efficiency.