Accession Number : AD0676635

Title :   ON THE HYPERSONIC LEADING-EDGE PROBLEM IN THE MERGED-LAYER REGIME,

Corporate Author : RAND CORP SANTA MONICA CALIF

Personal Author(s) : Cheng,H. K. ; Chen,S. Y. ; Mobley,R. ; Huber,C.

Report Date : SEP 1968

Pagination or Media Count : 15

Abstract : Finite-difference analyses are applied to a single set of partial differential equations derived from full Navier-Stokes equations under a thin-layer approximation for the entire flow field (including the shock-like region). Solutions obtained for the caloric perfect gas are compared with available data from air and nitrogen experiments. Calculated values for heat-transfer appear to be higher than measured data; examination indicates that certain nonequilibrium effects (rotational de-excitations in particular), unaccounted for in data correlation and in the analysis, may be important sources of the discrepancy. (Author)

Descriptors :   (*LEADING EDGES, FLAT PLATE MODELS), (*WEDGES, HYPERSONIC CHARACTERISTICS), FLOW FIELDS, TURBULENT BOUNDARY LAYER, THEORY, PARTIAL DIFFERENTIAL EQUATIONS, NAVIER STOKES EQUATIONS, GAS FLOW, HEAT TRANSFER, INEQUALITIES, SHOCK WAVES, THICKNESS, COMPRESSIBLE FLOW, NUMERICAL METHODS AND PROCEDURES, DENSITY, SKIN FRICTION

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE