Leakage Performance and Static Stability of Hybrid Labyrinth-Honeycomb Seals

被引：0
|
作者：
Yang X. [1 ]
Zhang W. [1 ,2 ]
Gu C. [1 ]
Zhang X. [3 ]
Li C. [1 ,2 ]
机构：
[1] School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai
[2] Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, Shanghai
[3] North China Electric Power Research Institute Co Ltd, Beijing
来源：
Mocaxue Xuebao/Tribology | 2021年 / 41卷 / 05期
基金：
中国国家自然科学基金; 上海市自然科学基金;
关键词：
Computational fluid dynamics (CFD); Hybrid labyrinth-honeycomb seal; Leakage characteristics; Static stability;
D O I：
10.16078/j.tribology.2020143
中图分类号：
学科分类号：
摘要：
A three-dimensional numerical model of the hybrid labyrinth-honeycomb seal was established. The static stability and leakage characteristics of the hybrid labyrinth-honeycomb seal were investigated and compared to the traditional labyrinth seal in the choked/unchoked flow condition and different eccentricity. Results showed that the leakage flow rate of the two kinds of seals increased with the increasing eccentricity, while the hybrid labyrinth-honeycomb seal showed better leakage performance than the traditional labyrinth seal. The fluid-induced force and static stiffness coefficient of two kinds of seals in the choked and unchoked condition were negative, which was prone to the static instability of the system. Compared to the traditional labyrinth seal, the absolute value of the static stiffness coefficient of the hybrid labyrinth-honeycomb seal was smaller, and hybrid labyrinth-honeycomb seal possessed a relatively better stability. © 2021, Science Press. All right reserved.
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页码：738 / 748
页数：10
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