Research on flow characteristics of negative dislocated seal

被引：0

作者：

Sun, Dan ^{[1
]}

Xiao, Zhonghui ^{[2
]}

Wang, Xuejun ^{[2
]}

Zheng, Tiesheng ^{[3
]}

Meng, Jigang ^{[2
]}

机构：

[1] Liaoning Key Lab of Advanced test Technology for Aerospace propulsion System, Shenyang Aerospace University, Shenyang, 110136, Liaoning Province

[2] Shenyang Blower Works Group Co. Ltd., Shenyang, 110142, Liaoning Province

[3] Department of Mechanics and Engineering Science, Fudan University, Yangpu District, Shanghai

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2015年 / 35卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Air induced vibration; Computational fluid dynamics (CFD); Fluid-induced force; Hydrodynamic action; Seal;

D O I：

10.13334/j.0258-8013.pcsee.2015.12.018

中图分类号：

学科分类号：

摘要：

With the development of rotating machine operating parameters, the air induced force generates in seals is increasingly becoming one of the most important factors to influence the stability of the rotor system. Air induced force that increases as gas bearing action generates from hydrodynamic in seal becomes bigger with the rotating machine operating parameters intensifying. The paper presented a kind of negative dislocated seal based on the dislocated bearing theory, it can eliminate hydrodynamic action and reduce air induced force. The computational fluid dynamics model for the flow field characteristic of the negative dislocated seal and traditional round seal was set up. The paper relatively analyzed the flow field characteristic difference for the two types of seals, and the influence factors of dislocate ratio, speed, eccentricity, pressure ratio, preswirl were investigated. Numerical results show that the leakage between the negative dislocated seal and traditional round seal is almost equivalent, the negative dislocated seal has less fluid-induced force and better stability. ©2015 Chin. Soc. for Elec. Eng.

引用

页码：3068 / 3074

页数：6

共 23 条

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