DISTRIBUTION FUNCTION AND TEMPERATURES IN A MONATOMIC GAS UNDER STEADY EXPANSION INTO A VACUUM
UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF AEROSPACE ENGINEERING
Pagination or Media Count:
The distribution function for the spherical source is determined by integrating the B-G-K model equation, where the local temperature is determined by the moment equations under the hypersonic approximation. In the far field, the axial distribution is nearly Maxwellian. A free molecule limit exists, but does not define the lateral temperature and higher moments properly. The lateral temperature is determined by far field collisions, and is largely contained in the tail of the lateral distribution. A Mach number or a Reynolds number similarity in the distribution function is shown.
- Fluid Mechanics