International Journal of Aeronautical and Space Sciences

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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On the Assessment of Compressibility Effects of Two-Equation Turbulence Models for Supersonic Transition Flow with Flow Separation

  • Sung, Hong-Gye (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Seong-Jin (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Yeom, Hyo-Won (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Heo, Jun-Young (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • Received : 2013.10.02
  • Accepted : 2013.12.20
  • Published : 2013.12.30
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Abstract

An assessment of two-equation turbulence models, the low Reynolds k-${\varepsilon}$ and k-${\omega}$ 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.

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References

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