"Modeling of separated flows in CFD software FlowVision-HPC"
Zhluktov S.V., Aksenov A.A., Kharchenko S.A., Moskalev I.V., Sushko G.B., Shishaeva A.S.

A new subgrid turbulence model for near-wall cells is proposed. The model is based on the method of wall functions and takes into account the pressure gradient (both positive and negative). The model includes a smooth profile of tangential velocity, a smooth profile of turbulent viscosity, and a special profile of the dissipation rate of turbulent energy. The profile of tangential velocity is combined from the experimental zero-gradient and separation profiles. The proposed model is implemented in CFD software FlowVision-HPC and is verified using 2D test cases. Flows past straight and curvilinear walls are studied.

Keywords: Navier-Stokes equations, turbulence model, wall functions, airfoil, computational grid with subgrid resolution of geometry

Zhluktov S.V. e-mail: sz@tesis.com.ru;   Aksenov A.A. e-mail: andrey@tesis.com.ru;   Kharchenko S.A. e-mail: skh@tesis.com.ru;   Moskalev I.V. e-mail: miv@tesis.com.ru;   Sushko G.B. e-mail: gs@tesis.com.ru;   Shishaeva A.S. e-mail: nsh@tesis.com.ru