Accession Number : AD0645117

Title :   A PRELIMINARY STUDY OF THE FLOW FIELD AROUND A BLUNT BODY IN HYPERSONIC LOW DENSITY FLOW.

Descriptive Note : Interim rept.,

Corporate Author : UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF AEROSPACE ENGINEERING

Personal Author(s) : Tirumalesa,Duvvuri

Report Date : NOV 1966

Pagination or Media Count : 30

Abstract : The local temperature and density profiles in the stagnation region of a hemisphere-cylinder body placed in a flow of nitrogen are presented. The Mach number was 9.18, the Reynolds number was 350 per inch and the Knudsen number was 0.045. The stagnation temperature was 298K. The model was cooled with liquid nitrogen. The local density and temperature were measured with an electron beam. The rotational temperature was corrected using Robben and Talbot's experimental curve. The measurements indicate that the local to free stream temperature ratio across the shock layer continuously increases towards the body and reaches a value smaller than the inviscid shock value, whereas the density also increases continuously but reaches a higher value than the inviscid shock value. (Author)

Descriptors :   (*HYPERSONIC FLOW, *FLOW FIELDS), (*BLUNT BODIES, HYPERSONIC FLOW), STAGNATION POINT, NITROGEN, REYNOLDS NUMBER, TEMPERATURE, ROTATION, VORTICES, DENSITY

Subject Categories : Physical Chemistry
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE