Shock-unsteadiness model applied to oblique shock wave/turbulent boundary-layer interaction

  • Authors:
  • Amjad Ali Pasha;Krishnendu Sinha

  • Affiliations:
  • Department of Aerospace Engineering, Indian Institute of Technology Bombay, Mumbai, India;Department of Aerospace Engineering, Indian Institute of Technology Bombay, Mumbai, India

  • Venue:
  • International Journal of Computational Fluid Dynamics
  • Year:
  • 2008

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Abstract

Reynolds-averaged Navier-Stokes prediction of shock wave/turbulent boundary layer interactions can yield significant error in terms of the size of the separation bubble. In many applications, this can alter the shock structure and the resulting surface properties. Shock-unsteadiness modification of Sinha et al. (Physics of Fluids, Vol.15, No.8, 2003) has shown potential in improving separation bubble prediction in compression corner flows. In this article, the modification is applied to oblique shock wave interacting with a turbulent boundary layer. The challenges involved in the implementation of the shock-unsteadiness correction in the presence of multiple shock waves and expansion fans are addressed in detail. The results show that a robust implementation of the model yields appreciable improvement over standard k-ω turbulence model predictions.