Quantitative calculation method of the casing flange leakage based on equivalent clearance

被引：0
|
作者：
Ai Y. [1 ]
Liu J. [1 ]
Tian J. [1 ]
Liu Y. [1 ]
Zhao D. [2 ]
Yao Y. [1 ]
机构：
[1] Liaoning Key Laboratory of Advanced Measurement and Test Technology for Aviation Propulsion System, Shenyang Aerospace University, Shenyang
[2] Sichuan Gas Turbine Research Institute, Aero Engine Corporation of China, Chengdu
来源：
Hangkong Dongli Xuebao/Journal of Aerospace Power | 2024年 / 39卷 / 01期
关键词：
casing flange; equivalent clearance; flow factor; leakage experiment; roughness;
D O I：
10.13224/j.cnki.jasp.20220153
中图分类号：
学科分类号：
摘要：
A quantitative calculation method of gas leakage in casing flange considering the rough surface morphology and various distributed loads was proposed by using the parallel plate flow theory，which combined the flow factor method and the relationship between contact pressure and contact gap on the rough surface. The influence of internal gas pressure and axial force on gas leakage in casing flange was studied by finite element method. The results showed that with the increase of internal gas pressure，the leakage increased， and with the increase of axial force， the leakage decreased slightly. Finally， the calculated results were compared with the experimental results of leakage， and the maximum errors of leakage under the action of internal gas pressure and axial force were 3.5% and 3.6%，respectively，which proved the effectiveness of the proposed calculation method. © 2024 BUAA Press. All rights reserved.
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