沈阳航空航天大学学报2016，Vol.33Issue(6)：35-41,7.DOI:10.3969/j.issn.2095-1248.2016.06.006
刷式密封泄漏流动特性流固耦合研究
Study on the leakage flow characteristics of brush seals based on fluid-structure interaction
摘要
Abstract
Brush seals are the key parts of rotating machines,because leakage loss caused by brush seals af-fect the work efficiency of the machine. In this paper,the leakage flow characteristics of brush seals were an-alyzed using the theory of fluid-structure interaction. A three-dimensional computational model was presented based on two-way fluid-structure interaction,and moving grids technique and its validation was tested by ex-periment. The flow field characteristics were further analyzed and the effects of some factors( e. g. geometric parameters)on the leakage characteristics were also investigated. Numerical results show that the leakage rate increases with the increase of backing plate fence height. The leakage rate increases with increasing the axial clearance between the brush bristle and back plate,and then tends to be stable. As the bristle row number in-creases,the leakage rate first decreases rapidly,then slowly,and finally tends to a value. The results of this study can provide fundamental support for designing brush seals.关键词
刷式密封/流固耦合/流场特性/泄漏特性Key words
brush seals/fluid-structure interaction/flow field characteristic/leakage characteristic分类
能源科技引用本文复制引用
刘宁宁,孙丹,胡广阳,艾延廷,白伟钢..刷式密封泄漏流动特性流固耦合研究[J].沈阳航空航天大学学报,2016,33(6):35-41,7.基金项目
国家自然科学基金（项目编号11302133）；航空基金（项目编号2014ZB54）；辽宁省自然科学基金项目 （）
