Study on Flow Network Coupling Method for Compound Impingement andFilm Cooling in Gas Turbine Blade Leading Edge

被引：0
|
作者：
Bao L. [1 ]
Liu Z. [1 ]
Zhang W. [1 ]
Feng Z. [1 ]
机构：
[1] School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2024年 / 58卷 / 06期
关键词：
compound impingement and film cooling; film cooling correction; flow network calculation; flow network coupling;
D O I：
10.7652/xjtuxb202406011
中图分类号：
学科分类号：
摘要：
In order to facilitate the design and research of gas turbine blade leading edge compound impingement/film cooling, a flow network coupling method is proposed. The flow network calculation program for blade cooling design is programmed with Python and verified by the experimental data of impingement cooling. Combined with ANSYS CFX, the flow network coupling design and computing platform for blade leading edge compound impingement and film cooling is built, and the flow network model for the internal cooling calculation is designed. Meanwhile, the film cooling correction method for flow network coupling program is developed. Numerical simulations are conducted after turbulence model verification and grid independence test, then results are compared with that of the home-made code, and reliability of the homemade code is verified by conjugate numerical study. The results show that the flow network model has good simulation accuracy, and can be used for the internal flow calculation during the flow network coupling. The relative difference of the averaged film cooling effectiveness calculated by the film cooling corrected flow network method and the CFD is between 2.18% and 12.2%, which verifies the reliability of the film cooling correction. The flow network coupling result is consistent with the CFD conjugated study. The blade temperature distribution calculated by the two methods is consistent with each other, but time needs for the flow network coupling calculation is only 1/18 of the CFD conjugated study, that is a massive time saver. Consequently, flow network coupling method can be applied to the design and research of blade leading edge compound impingement/film cooling. © 2024 Xi'an Jiaotong University. All rights reserved.
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页码：114 / 127
页数：13
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