Modeling of unsteady subsonic flow around an axisymmetric body with a turbulator
I.A. Shirokov, T.G. Elizarova
Keldysh Institute of Applied Mathematics RAS, Moscow, Russia
Keywords: quasi-gas-dynamic (QGD) equations, subsonic flow, laminar-turbulent transition
Abstract
Numerical simulation for external subsonic unsteady flow around an axisymmetric model is presented in this paper. The simulation uses a quasi-gas-dynamic algorithm implemented on an unstructured tetrahedral grid. A turbulator in the annular flap shape is allocated on the model surface: it sets the position of a laminar-turbulent transition. The problem statement corresponds to experiments for this model placed in a wind tunnel. The overall flow pattern, the distribution of the pressure coefficient on the surface, and the turbulent pulsation parameters demonstrate high qualitative and quantitative agreement with the experimental data.
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