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- Title
Influence of Geometry on Rotordynamic Coefficients of Brush Seal.
- Authors
Yuan Wei; Dowell, Earl H.; Zhaobo Chen; Yinghou Jiao; Zhouqiang Zhang
- Abstract
It has been observed that the geometry of a brush seal has a significant effect on the sealing performance. However, the relationship between rotordynamic coefficients and geometry factors of the brush seal itself are rarely considered. In this article, the rotordynamic coefficients of a typical single-stage brush seal for different geometries and operating conditions were numerically analyzed using CFD RANS solutions coupled with a non-Darcian porous medium model. The reaction force which plays an essential role in rotordynamic coefficients was obtained by integrating the dynamic pressure distribution. The influence of the bristle pack thickness, fence height, clearance size and other working condition parameters on aerodynamic force, stiffness coefficients, and damping coefficients of brush seal were presented and compared. In addition, the effects of various geometric configurations on pressure and flowfeatures were also discussed.
- Subjects
SEALING machines; POROUS materials; NUMERICAL analysis; DYNAMIC pressure; STIFFNESS (Mechanics); DAMPING (Mechanics)
- Publication
International Journal of Turbo & Jet-Engines, 2017, Vol 34, Issue 2, p155
- ISSN
0334-0082
- Publication type
Article
- DOI
10.1515/tjj-2015-0063