Effects of Geometry Parameters on the Cooling Performance and Conjugate Thermal-Elastic Property of Double-Reverse-Jet Film Cooling
- Authors: Wang Z.1,2, Zhang C.3, Li S.2, Liu J.1, Zhang H.1
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Affiliations:
- Institute of Engineering Thermophysics
- School of Energy and Power Engineering
- Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control
- Issue: Vol 60, No 6 (2019)
- Pages: 1060-1067
- Section: Article
- URL: https://journals.rcsi.science/0021-8944/article/view/161675
- DOI: https://doi.org/10.1134/S0021894419060117
- ID: 161675
Cite item
Abstract
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.
About the authors
Z. Wang
Institute of Engineering Thermophysics; School of Energy and Power Engineering
Author for correspondence.
Email: wangzhan@sdu.edu.cn
China, Beijing, 100190; Jinan, 250061
C. Zhang
Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control
Author for correspondence.
Email: czhangxj@163.com
China, Tianjin, 300384
S-J. Li
School of Energy and Power Engineering
Email: czhangxj@163.com
China, Jinan, 250061
J.-J. Liu
Institute of Engineering Thermophysics
Email: czhangxj@163.com
China, Beijing, 100190
H.-W. Zhang
Institute of Engineering Thermophysics
Email: czhangxj@163.com
China, Beijing, 100190