Accession Number:

AD0643270

Title:

DISTRIBUTION FUNCTION AND TEMPERATURES IN A MONATOMIC GAS UNDER STEADY EXPANSION INTO A VACUUM

Descriptive Note:

Corporate Author:

UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF AEROSPACE ENGINEERING

Personal Author(s):

Report Date:

1966-09-01

Pagination or Media Count:

24.0

Abstract:

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.

Subject Categories:

  • Fluid Mechanics
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE