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http://dx.doi.org/10.5293/kfma.2017.20.2.011

CFD Analysis of Leakage Prediction for Brush Element  

Kim, Kyul (department of mechanical engineering, graduate school, Gachon University)
Ha, Tae Woong (department of mechanical engineering, Gachon University)
Publication Information
The KSFM Journal of Fluid Machinery / v.20, no.2, 2017 , pp. 11-16 More about this Journal
Abstract
The accurate prediction of leakage flow through the brush element of brush seal at the steam turbine is important to find optimum design parameters for increasing an efficiency. In this study, CFD analysis method using commercial software FLUENT is proposed to predict leakage through the brush element. Since the brush element has a complex three-dimensional shape with many bristle assemblies, it is difficult to analyze the flow field. Therefore, if the brush element is assumed to be porous medium region, the analysis time can be shortened. Two determination methods of resistance coefficients of the Darcian porous medium equation are suggested. By comparing the 2D and 3D CFD analysis results for the leakage of the brush element using the two resistance coefficient determination methods, the effectiveness of the analysis for the porous medium assumption is proved.
Keywords
Brush Element; CFD; FLUENT; Leakage; Porous Medium;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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