Numerical modeling of rotordynamic coefficients for deliberately roughened stator gas annular seals

被引:76
作者
Chochua, Gocha [1 ]
Soulas, Thomas A. [1 ]
机构
[1] Dresser Rand Co, Olean, NY 14760 USA
来源
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME | 2007年 / 129卷 / 02期
关键词
CFD; hole-pattern seal; gas seal; damper seal; rotor-dynamic; coefficients; centrifugal compressor;
D O I
10.1115/1.2647531
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
A method is proposed for computations of rotordynamic coefficients of deliberately roughened stator gas annular seals using computational fluid dynamics. The method is based on a transient analysis with deforming mesh. Frequency-dependent direct and cross-coupled rotordynamic coefficients are determined as a response to an assigned rotor surface periodic motion: The obtained numerical results are found to be in good agreement with the available test data and one-dimensional tool predictions. The method can be used as a research tool or as a virtual annular seal test rig for seal design and optimization.
引用
收藏
页码:424 / 429
页数:6
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