Accession Number : AD0671921

Title :   MAGNETIC HYPERSONIC FLOW NEAR THE STAGNATION POINT AT LOW REYNOLDS NUMBER,

Corporate Author : RAND CORP SANTA MONICA CALIF

Personal Author(s) : Chen,S. Y.

Report Date : MAY 1968

Pagination or Media Count : 37

Abstract : An investigation was made of the effects of wall temperature and of a magnetic field on the flow field at the stagnation point of blunt-nosed bodies in low-Reynolds-number hypersonic flow, with the intent of determining the possibility of using small magnetic fields to reduce heat transfer and skin friction in that region. Results indicate that a small magnetic field of the order of 1000 Gauss or less reduces both heat transfer and skin friction in high-altitude flight, but increases shock standoff distance. The strength of magnetic field required is attainable by a permanent magnet. Increasing the wall temperature tends to produce higher values of both the heat-transfer and skin-friction parameters, although the magnitude of the effect is less on the heat-transfer parameter. All of these effects diminish rapidly as the flow approaches the free-molecular-flow limit. (Author)

Descriptors :   (*HYPERSONIC FLOW, *MAGNETIC FIELDS), STAGNATION POINT, ATMOSPHERE ENTRY, SKIN FRICTION, HEAT TRANSFER, REDUCTION, HIGH ALTITUDE, MAGNETS, RAREFIED GAS DYNAMICS, REYNOLDS NUMBER, SHOCK WAVES, FLOW FIELDS

Subject Categories : Aerodynamics
      Fluid Mechanics
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE