Abstract:
The article is devoted to numerical study of the non-stationary vortex motion of gas arising over the conical body with a segmental bottom surface for various angles of attack at a transonic flow regime. The modeling is based on the viscous compressible gas model (Navier-Stokes model). For numerical simulation the conservative method of finite volumes is used. For various attack angles, the patterns of vortex structure of flow around the conical surface, bottom body surface and in the near wake are presented. Data are provided on the non-stationary behavior of the flow in the area of conjugation of conical and bottom surfaces, as well as the dependencies of aerodynamic characteristics on the angle of attack. Numerical calculations were carried out on the basis of parallel algorithms and were realized on multiprocessor computing systems.
Keywords:numerical modeling, non-stationary flows, vortex flow, near wake, aerodynamic characteristics.
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