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Accuracy improvement of the bleed boundary condition with the effects of porosity variation and expansion waves : 다공도 및 팽창파의 영향을 고려한 BLEED 경계조건 수치 모델링의 정확도 향상 연구
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- Authors
- Issue Date
- 2016-03
- Publisher
- 한국전산유체공학회
- Citation
- 한국전산유체공학회지, Vol.21 No.1, pp.94-102
- Abstract
- The present paper deals with accuracy improvement of a bleed boundary condition model used to improve the performance of supersonic inlets. In order to accurately predict the amount of bleed mass flow rates, this study performs a scaling of sonic flow coefficient data for 90-degree bleed holes in consideration of Prandtl-Meyer expansion theory. Furthermore, it is assumed that porosity varies with stream-wise location of the porous bleed plate to accurately predict downstream boundary layer profiles. The bleed boundary condition model is demonstrated through Computational Fluid Dynamics(CFD) simulations of bleed flows on a flat plate with/without an oblique shock. As a result, the bleed model shows the improved accuracy of bleed mass rates and downstream boundary layer profiles.
- ISSN
- 1598-6071
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