Abstract
Rarefied flow of a moiiatomic gas about slender cones and flat plates has been studied by a numerical experiment at Mach numbers of approximately 10 and 25 for both hot and cold wall conditions. Cone semiapex angle ranged from 3° to 15° while the ratio of ambient mean free path to body length was varied from 0.01 to 3.0. Leading edge flow on sharp slender cones is found to differ substantially from that on flat plates in that surface fluxes for the former do not show the large overshoots above free molecule values which exist for the latter geometry. Monte Carlo predictions of flowfield properties and surface fluxes are shown to be consistent, in the main, with experimental data. The effect of intermolecular potential in near-free-molecule flow about cones was investigated.
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