Accession Number : AD0803315

Title :   EFFECT OF CONTACT SURFACE BLUNTNESS ON MASSIVE BLOWING FROM A WEDGE IN HYPERSONIC FLOW.

Descriptive Note : Rept. for Sep 65-Jul 66,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA LABS DIV

Personal Author(s) : Emanuel, George

Report Date : OCT 1966

Pagination or Media Count : 27

Abstract : An inviscid, compressible analysis is given for massive blowing from the porous surface of a wedge or flat plate in a hypersonic free stream. An inverse procedure is used whereby the specified geometry of the contact surface is that of a blunted wedge. The resulting mathematical formulation which uses natural coordinates and the Fourier cosine transform, is notable for its simplicity. Attention is focused on the induced pressure field in the injected gas due to the contact surface's bluntness. Detailed results, however, are given only for the flat plate. For this case, appreciable induced tangential and normal pressure gradients occur in the injected gas flow near the leading edge. An interesting result is that the pressure and velocity distribution on the plate is given by a single universal curve, when distance along the plate is properly scaled. (Author)

Descriptors :   (*BLUNT BODIES, SURFACE PROPERTIES), (*HYPERSONIC FLOW, BLUNT BODIES), WEDGES, MODEL TESTS, FLAT PLATE MODELS, SIMULATION, VELOCITY, PRESSURE, POROSITY, MATHEMATICAL ANALYSIS, INJECTION, WIND TUNNEL MODELS, ABLATION, EJECTION, GASES, CONICAL BODIES, ORIFICES.

Subject Categories : Test Facilities, Equipment and Methods
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE