Numerical Study on Cooling Characteristics of Turbine Guide Vanes with Impingement/Film Double Wall Structure Using Source Term Method

被引：0
|
作者：
Wei K. [1 ]
Miao H. [1 ]
Qin X.-S. [1 ]
Zhang C.-X. [1 ]
机构：
[1] Aero Engine Academy of China, Beijing
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2022年 / 43卷 / 06期
关键词：
Double wall structure; Flow rate coefficient; Mesh density; Source term method; Turbine guide vane;
D O I：
10.13675/j.cnki.tjjs.210027
中图分类号：
学科分类号：
摘要：
In order to reduce the consumption of calculation resources caused by plenty of cooling holes, the source term method is applied to simulate the heat transfer of Mark II turbine guide vane with impingement/film double-wall cooling structure, and the results are compared with those without source term method. The effects of the mesh density of cooling holes and the empirical formula of flow rate coefficient on the accuracy of the source term method are analyzed. The results show that by using the source term method, the surface temperature distribution of the blade can be simulated accurately and the calculation time can be reduced by 75%. When the minimum surface mesh scale at the inlet and outlet of cooling holes is smaller than 1/10 of the hole diameter, the numerical simulation results will not change with the surface mesh density. The main factor affecting the simulation accuracy is whether or not the empirical formula can accurately simulate the total cooling air flow rate and the influence of crossflow on the flow rate coefficient. © 2022, Editorial Department of Journal of Propulsion Technology. All right reserved.
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