Progress on mechanism of flow and heat transfer and modeling of turbine blade squealer tip

被引：0
|
作者：
Zou Z. [1 ,2 ]
Xuan L. [2 ,3 ]
Fu C. [1 ,2 ]
机构：
[1] Research Institute of Aero-Engine, Beihang University, Beijing
[2] National Key Laboratory of Science and Technology on Aero-Engine Aero, thermodynamics, Beihang University, Beijing
[3] School of Energy and Power Engineering, Beihang University, Beijing
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2022年 / 37卷 / 11期
关键词：
flow modeling; flow organization; heat transfer characteristic; high pressure turbine; squealer tip; tip leakage flow; uncertainty;
D O I：
10.13224/j.cnki.jasp.20220207
中图分类号：
学科分类号：
摘要：
According to the flow mechanism and organization method of squealer tip, the analysis of aerodynamic and heat transfer characteristics of squealer tip considering cooling, and the modeling of leakage flow of squealer tip were summarized. The results showed that the flow inside the cavity had an obvious effect on the heat transfer. There was a strong interaction between the cooling gas in the cavity and the leakage flow. Reasonable cavity shape and jet hole position can effectively improve the aerodynamic performance and reduce the heat load of the blade tip; The uncertainty of blade tip machining and aerodynamic parameters could significantly affect the performance of squealer tip. By modeling the vortex structure in the cavity, the performance prediction model of the squealer tip considering the compressibility of air jet was verified by experiment and numerical simulation results. The model can effectively evaluate the performance of the squealer tip and provide a reference for engineering design. © 2022 BUAA Press. All rights reserved.
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页码：2560 / 2573
页数：13
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