Analysis of floating foil gas seal performance based on bump foil deformation

doi:10.11949/0438-1157.20220119

IR > 石油化工学院

	Analysis of floating foil gas seal performance based on bump foil deformation
	Xu, Jie; Yu, Shurong; Ding, Xuexing; Jiang, Haitao; Ding, Junhua
	2022-05-01
发表期刊	Huagong Xuebao/CIESC Journal
ISSN	0438-1157
卷号	73 期号:5 页码:2083-2093
摘要	In order to ensure the stable operation of the dynamic sealing of aero-engines, for the floating foil gas film seal, the bump foil stiffness model considering the Coulomb friction is adopted, and the central difference method and the over-relaxation iterative method are used to couple the foil deformation equation, pressure control equation and gas film thickness control equation. And the small disturbance method, combined with the balance between pressure and foil deformation, obtain the flow field distribution of the wedge-shaped lubricating gas film, and the influence of working condition parameters, foil structure parameters and linear dynamic pressure groove distribution position on the static and dynamic characteristics of the seal is analyzed. The research results show that: Benefiting from the deformation of the sealing surface, the floating foil gas film seal can independently adjust the gas film gap according to operating conditions; The gas film floating force and leakage of the inlet straight groove are bigger than those of the middle straight groove; The sealing characteristics are closely related to the gas film pressure and the sealing gap, but they are little affected by the Coulomb friction effect; Both the Coulomb friction effect and the thickened foil increase the rigidity of the foil to a certain extent, making the sealing surface "rigid"; The comprehensive performance of the floating foil air-film seal in the high-speed service environment is good. The research results laid a theoretical foundation for the structural design and experimental testing of the floating foil gas film seal in the future. © 2022, Editorial Board of CIESC Journal. All right reserved.
关键词	Aircraft engines Deformation Friction Gases Iterative methods Seals Structural design Coulomb's frictions Dynamic pressure groove Dynamic pressures Elastic foils Finite-difference methods Gas film lubrication Gas films Sealing characteristics Small disturbance method Small disturbances
DOI	10.11949/0438-1157.20220119
收录类别	EI
语种	中文
出版者	Materials China
EI入藏号	20222212165430
EI主题词	Finite difference method
EI分类号	408.1 Structural Design, General ; 619.1.1 Pipe Accessories ; 653.1 Aircraft Engines, General ; 921.6 Numerical Methods
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/158441
专题	石油化工学院
作者单位	College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Xu, Jie,Yu, Shurong,Ding, Xuexing,et al. Analysis of floating foil gas seal performance based on bump foil deformation[J]. Huagong Xuebao/CIESC Journal,2022,73(5):2083-2093.
APA	Xu, Jie,Yu, Shurong,Ding, Xuexing,Jiang, Haitao,&Ding, Junhua.(2022).Analysis of floating foil gas seal performance based on bump foil deformation.Huagong Xuebao/CIESC Journal,73(5),2083-2093.
MLA	Xu, Jie,et al."Analysis of floating foil gas seal performance based on bump foil deformation".Huagong Xuebao/CIESC Journal 73.5(2022):2083-2093.