The International Conference on Multiphase Systems, ICMS'2000
|Supersonic Dusty-Gas Flow Past a Blunt Body and the Heat Transfer Problem|
Osiptsov A. N.
Institute of Mechanics, Lomonosov Moscow State University, Moscow, RUSSIA
Vasilevskii E. B.
Central Aerohydrodynamical Institute, Zhukovskii, Moscow Region, RUSSIA
A supersonic dusty-gas flow past a blunt body is investigated theoretically and experimentally. The particle concentration profiles formed in the inviscid part of the shock layer are studied numerically for both uniform and non-uniform free-stream particle concentration distributions. The limits of the regime of no-inertial deposition of particles are found with the Knudsen effects accounted in the interphase momentum exchange. Step-shaped and harmonic free-stream concentration nonuniformities are considered. For the no-inertial deposition regime, the asymptotic equations of the nonstationary two-phase boundary layer on a blunt body are constructed and the particle effect on the steady-state and unsteady friction and heat flux coefficients at the stagnation point are investigated. Numerical results are compared with the experimental data on the mean heat fluxes at the stagnation point of a sphere in dusty supersonic flow, obtained in the TsAGI UT-1 wind tunnel.