Physical and Mathematical Modeling of a Supersonic Flow Around Bodies with Gas-Permeable Porous Inserts at an Angle of Attack
S. G. Mironov, S. V. Kirilovskiy, T. V. Poplavskaya, I. S. Tsyryulnikov, A. A. Maslov
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Keywords: сверхзвуковые течения, управление обтеканием, газопроницаемые пористые вставки, аэродинамическое сопротивление, supersonic flow, flow control, gas-permeable porous insert, drag
Abstract
Results of experimental and numerical modeling of a supersonic flow around a cylinder with a frontal gas-permeable high-porosity insert aligned at different angles of attack are presented. The experiments are performed in a supersonic wind tunnel at the Mach number M¥ =7 and unit Reynolds number Re1=1.5 х 106 m-1 in the range of the angles of attack 0-25oC. The numerical simulations are performed by means of solving three-dimensional Reynolds-averaged Navier-Stokes equations with the use of a three-dimensional annular skeleton model of the porous material. The drag and lift coefficients for a cylinder with a 95% porosity and pore diameter of 2 mm are obtained for different values of the insert length and angle of attack.
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