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http://dx.doi.org/10.5293/kfma.2013.16.3.026

Analysis of Pre-Swirl Effect for Plain-Gas Seal Using CFD  

Ha, Tae-Woong (Mechanical-Automotive Engineering Dept. Gachon University)
Publication Information
The KSFM Journal of Fluid Machinery / v.16, no.3, 2013 , pp. 26-31 More about this Journal
Abstract
In present 3D CFD study, the method for determining leakage and rotordynamic coefficients of a plain-gas seal is suggested by using the relative coordinate system for steady-state simulation. In order to find the effect of pre-swirl speed at seal inlet, pre-swirl velocity is included as a parameter. Present analysis is verified by comparison with results acquired from Bulk-flow analysis code and published experimental results. The results of 3D CFD rotordynamic coefficients of direct stiffness(K) and cross-coupled stiffness(k) show improvements in prediction. As pre-swirl speed at seal inlet increases, k also increases to destabilize system. However, pre-swirl speed at seal inlet does not show sensitivity to the leakage and rotordynamic coefficients of K and damping(C).
Keywords
Pre-swirl effect; Leakage; Rotordynamic coefficient; Plain-gas seal; Bulk-flow model; CFD; Fluent;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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