Effects of Geometry Parameters on the Cooling Performance and Conjugate Thermal-Elastic Property of Double-Reverse-Jet Film Cooling

被引:0
|
作者
Z. Wang
C. Zhang
S-J. Li
J.-J. Liu
H.-W. Zhang
机构
[1] Chinese Academy of Sciences,Institute of Engineering Thermophysics
[2] Shandong University,School of Energy and Power Engineering
[3] Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control,undefined
来源
Journal of Applied Mechanics and Technical Physics | 2019年 / 60卷
关键词
double-reverse-jet film cooling (DRJFC); geometric parameters; anti-kidney vortices; multi-field coupling; thermal stress;
D O I
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中图分类号
学科分类号
摘要
In order to investigate the double-reverse-jet film cooling (DRJFC), the multi-field coupling calculating method is used to study the effect of geometric parameters on the resultant vortex structure and conjugate thermal-elastic property. The traditional streamwise film cooling is also investigated for comparison. The results indicate that the formation of effective anti-kidney vortices is the key to enhance the dimensionless temperature of DRJFC holes. At low blowing ratios, the streamwise or lateral distance between two DRJFC holes should be increased to widen the transverse shift of the jets, thus, to increase the cooling performance. At high blowing ratios, the lateral distance should be decreased to prevent two jets from separating apart so that the malfunction of the anti-kidney vortices could be avoided. The stress concentration resulting from the nonuniform temperature distribution is considered.
引用
收藏
页码:1060 / 1067
页数:7
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