Flow Field Analysis and Sealing Characteristics Research of Flexible End Face Gas Film Seals

doi:10.3969/j.issn.1004-132X.2022.06.004

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	Flow Field Analysis and Sealing Characteristics Research of Flexible End Face Gas Film Seals
	Xu, Jie; Yu, Shurong; Yan, Ruqi; Ding, Xuexing; Wang, Shipeng; Ding, Junhua
刊名	Zhongguo Jixie Gongcheng/China Mechanical Engineering
	2022-03-25
卷号	33 期号:6 页码:656-663
关键词	Aircraft engines Deformation Gases Numerical methods Seals End face deformation End faces Face deformations Finite-difference methods Flexible foil Gas films Research results Rigid ends Sealing characteristics Sealing performance
ISSN号	1004-132X
DOI	10.3969/j.issn.1004-132X.2022.06.004
英文摘要	A flexible end face gas film seal was proposed for aero-engine shaft end seals. By solving the pressure governing equations under three kinds of sealing end face deformation, the evolution law of the micro-scale flow field characteristics of the sealing gas film was obtained, and the correlation between the key sealing performance parameters and the working conditions was discussed. The research results show that the flexible end face is deformed under the action of the compressed gas film, among which the deformation of the corrugated foil plays a leading role, and the influence of the flat foil is negligible. Compared to the rigid end face, the flexible end face may effectively increase the opening forces of the gas film, and the leakage rate also increases. Under different inlet and outlet pressure ratios, speeds and initial gas film thickness, the sealing characteristics of the two situations show different trends, the gap wedge effectiveness makes the viscous friction torque and gas film stiffness change rate of the flexible end face both are smaller than that of the rigid end face. Inferred from the research results, the flexible end face structure may have a more stable comprehensive sealing performance under high-speed and low-pressure conditions. © 2022, China Mechanical Engineering Magazine Office. All right reserved.
语种	中文
出版者	Chinese Mechanical Engineering Society
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158009]
专题	石油化工学院
作者单位	College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Xu, Jie,Yu, Shurong,Yan, Ruqi,et al. Flow Field Analysis and Sealing Characteristics Research of Flexible End Face Gas Film Seals[J]. Zhongguo Jixie Gongcheng/China Mechanical Engineering,2022,33(6):656-663.
APA	Xu, Jie,Yu, Shurong,Yan, Ruqi,Ding, Xuexing,Wang, Shipeng,&Ding, Junhua.(2022).Flow Field Analysis and Sealing Characteristics Research of Flexible End Face Gas Film Seals.Zhongguo Jixie Gongcheng/China Mechanical Engineering,33(6),656-663.
MLA	Xu, Jie,et al."Flow Field Analysis and Sealing Characteristics Research of Flexible End Face Gas Film Seals".Zhongguo Jixie Gongcheng/China Mechanical Engineering 33.6(2022):656-663.