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http://dx.doi.org/10.6112/kscfe.2017.22.1.008

THE STUDY ON THE SEPARATED FLOW OF A HUMP USING RANSMODELING  

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)
Publication Information
Journal of computational fluids engineering / v.22, no.1, 2017 , pp. 8-14 More about this Journal
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.
Keywords
Hump; Separation; Reattachment; Flow Control; Reynolds-averaged Navier-Stokes; FLUENT;
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