Accession Number : AD0736050

Title :   A Flat Plate Study of the Binary Scaling of Viscous Hypersonic Flow.

Descriptive Note : Final rept. Oct 69-Sep 70,

Corporate Author : OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS

Personal Author(s) : Harney,D. J. ; Petrie,S. L.

Report Date : AUG 1971

Pagination or Media Count : 51

Abstract : The interaction between the inviscid field and the large viscous boundary layer characteristic of hypersonic flow is analyzed from the continuum viewpoint. A variety of similarity parameters are derived to represent the viscous flow over slender bodies. The similitude is described by a binary collision scaling parameter, so that it is possible to apply a binary scaling that transforms density and length in inverse proportion at a fixed velocity and temperature. Experiments at a Mach number near 13 on a thermally controlled copper sharp plate were conducted to examine the wall temperature effects. Because of the wide range of test conditions covered in the experiments, the results provide some insight into viscous similarity when molecular effects begin to appear at the leading edge.

Descriptors :   (*REENTRY VEHICLES, HYPERSONIC CHARACTERISTICS), BOUNDARY LAYER, MATHEMATICAL PREDICTION, FLOW FIELDS, VISCOSITY, THERMAL ANALYSIS, FLAT PLATE MODELS, INTERACTIONS, SLENDER BODIES, ATMOSPHERE ENTRY, MOLECULAR PROPERTIES

Subject Categories : Guided Missile Reentry Vehicles
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE