Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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THE STUDY ON THE SEPARATED FLOW OF A HUMP USING RANSMODELING

RANS 모델링을 이용한 Hump 형상의 박리 유동에 대한 연구

  • Lee, J. (Koreanair R&D Center, Development Team #1) ;
  • Bae, J.H. (Koreanair R&D Center, Development Team #1) ;
  • Jung, K.J. (Agency for Defense Development, 4th R&D Institute)
  • 이재훈 (대한항공기술연구원, 개발 1팀) ;
  • 배중헌 (대한항공기술연구원, 개발 1팀) ;
  • 정경진 (국방과학연구소, 4연구본부)
  • Received : 2016.12.28
  • Accepted : 2017.03.15
  • Published : 2017.03.31
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Abstract

In this paper, separated flow characteristics is studied using the RANS(Reynold-averaged Navier-Stokes) modeling. The analysis is performed for the NASA's hump configuration which is the combination of a flat plate and a hump. This configuration was used in NASA's flow control workshop and it was one of validation cases for RANS and LES simulations. The separation occurs at the 65% of model length where a slot is positioned for the flow control. No flow control case and steady suction case are studied using RANS modeling. The Spalart-Allmaras model and the SST(Shear Stress Transport) model are applied and their accuracy are compared. To correlate CFD analysis with experimental data, the optimal boundary condition was investigated and the effect of a cavity around the slot is studied for the no flow case.

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References

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