Subject Keyword Abstract Author
On the Assessment of Compressibility Effects of Two-Equation Turbulence Models for Supersonic Transition Flow with Flow Separation

Hong-Gye Sung , Seong-Jin Kim , Hyo-Won Yeom and Jun-Young Heo
International Journal of Aeronautical and Space Sicences, vol. 14, no. 4, pp.387-397, 2013

Abstract : An assessment of two-equation turbulence models, the low Reynolds k-ε and k-ω SST models, with the compressibility corrections proposed by Sarkar and Wilcox, has been performed. The compressibility models are evaluated by investigating transonic or supersonic flows, including the arc-bump, transonic diffuser, supersonic jet impingement, and unsteady supersonic diffuser. A unified implicit finite volume scheme, consisting of mass, momentum, and energy conservation equations, is used, and the results are compared with experimental data. The model accuracy is found to depend strongly on the flow separation behavior. An MPI (Message Passing Interface) parallel computing scheme is implemented.

Keyword : Compressibility model, Arc-bump, Transonic diffuser, Supersonic jet impingement, Supersonic diffuser

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