Accession Number : AD0642437

Title :   VISCOUS HYPERSONIC FLOWS OVER POINTED CONES AT LOW REYNOLDS NUMBERS,

Corporate Author : CORNELL AERONAUTICAL LAB INC BUFFALO N Y

Personal Author(s) : Waldron,H. F.

Report Date : JUN 1966

Pagination or Media Count : 49

Abstract : An experimental and analytical study of viscous hypersonic flow over pointed cones with particular emphasis on the viscous-layer regime is presented. Shock tunnel measurements of heat transfer to 5, 10 and 20 degree half-angle cones and of pressure on the 20 degree cone are compared with the predictions of a viscous-inviscid interaction analysis (Probstein and Elliot) including transverse curvature, of a viscous-layer nonslender cone analysis (Cheng) and of an extension of the nonslender cone analysis incorporating effects of slenderness. The large rise in heat transfer predicted by the transverse curvature theory is not observed and close agreement is obtained with the nonslender cone viscous-layer predictions. An extension of the nonslender cone analysis is presented where the effects of cone slenderness are included by a perturbation analysis. The solution of the resulting equations reveals that the net effect of transverse curvature and of other effects associated with cone slenderness is small in the viscous-layer regime for not-too-slender cones. Good agreement of the 10 and the 20 degree cone experimental data is obtained with this extension of the nonslender solution. (Author)

Descriptors :   (*HYPERSONIC FLOW, *CONICAL BODIES), REYNOLDS NUMBER, VISCOSITY, HEAT TRANSFER, PERTURBATION THEORY, SLENDER BODIES

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE