Accession Number : AD0712075

Title :   VISCOUS INTERACTIONS AND FLIGHT AT HIGH MACH NUMBERS.

Descriptive Note : Final rept.,

Corporate Author : AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Korkegi,Robert H.

Report Date : JUL 1970

Pagination or Media Count : 64

Abstract : Viscous interactions which arise in regions of high compression on high Mach number vehicles, can result in severely high local heating and flow degradation. Regions where such strong interactions may occur on a cruise vehicle are discussed. In relation to these regions, a brief review is given of advances in the understanding of two-dimensional shock wave-boundary layer interaction and separation in compression corners, and such three-dimensional interaction problems as a blunt fin on a surface, flow in an axial corner, and shock impingement. It is concluded that much progress has been made in analytical prediction of two-dimensional laminar interactions and a promising approach advanced for the turbulent case; knowledge of departures from two-dimensional flow and three-dimensional interactions is still largely empirical and dominantly qualitative, and even the inviscid flow field is not well know for many configurations of practical importance. (Author)

Descriptors :   (*BOUNDARY LAYER, *SHOCK WAVES), (*TWO DIMENSIONAL FLOW, INTERACTIONS), AERODYNAMIC HEATING, FLOW SEPARATION, THREE DIMENSIONAL FLOW, FINS, LAMINAR FLOW, HYPERSONIC CHARACTERISTICS

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE