Three-dimensional models of gas-permeable-skeleton high-porosity cellular materials for supersonic aerodynamics
S.V. Kirilovsky, T.V. Poplavskaya, S.G. Mironov, I.S. Tsyryulnikov, I.R. Valiullin, T.S. Militsina
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Keywords: supersonic flows, flow control, gas-permeable porous inserts, aerodynamic drag
Abstract
Results of numerical simulation of a supersonic (М∞ = 7) flow past a cylinder with a frontal gas-permeable porous insert (porosity 95%, pore diameter 2 mm) installed at angles of attack α = 0÷10° are reported. The numerical modeling was performed based on the solution of three-dimensional Reynolds-averaged Navier-Stokes equations using three skeletal models: a model of intersecting hollow spheres, a model of non-intersecting hard spheres with a random arrangement of pores, and a model consisting of a set of toroidal elements. The calculated data on the drag coefficients and on the lift force of a cylinder with a frontal gas-permeable high-porosity insert are compared with the results of experiments carried out in the T-327 wind tunnel of ITAM SB RAS. A comparative analysis of the results of using three-dimensional skeletal models of highly porous cellular materials for modeling supersonic flows around bodies with gas-permeable porous inserts installed at various angles of attack is performed.
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