Hypersonic rarefied flow around a circular disk.

Abstract

Rarefied flows around a circular disk in a hypersonic stream are analyzed by the direct simulation Monte Carlo method. The domain of calculation is fully three-dimensional. The rarefaction effect upon such quantities as the flow field, the drag and heat transfer coefficients, and the recovery temperature is shown for Kn=0.1 - 20 at the wall to a stagnation temperature ratio of 0.5 and 1. The drag coefficient is in good agreement with the experimental data of argon by Legge. The cell network proposed here can easily be applied to lifting flows.