27th Congress of International Council of the Aeronautical Sciences, 19 - 24 September 2010, Nice, France
Paper ICAS 2010-3.5.3

HYPERSONIC AERODYNAMICS OF TOROIDAL BALLUTES

V. V. Riabov
Rivier College, USA

Keywords: dsmc method, aerodynamic coefficients, hypersonic rarefied-gas flows, ballute, torus

Hypersonic flows of nitrogen, oxygen, carbon dioxide, and argon near toroidal ballutes are investigated with the Direct Simulation Monte-Carlo technique at Knudsen numbers from 0.001 to 1. Strong influences of geometrical factors and the Knudsen number on flow patterns, skin friction, pressure distribution, heat flux, and drag are found.

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