VISCOUS INTERACTIONS AND FLIGHT AT HIGH MACH NUMBERS.
AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO
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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
- Fluid Mechanics