摘要: The thrust of this research program has been the improvement of our capabilitiesfor analyzing stability and transition in high-speed flows over realistic bodies. Examples of such bodies are swept wings of high-speed airplanes or t... 展开 The thrust of this research program has been the improvement of our capabilitiesfor analyzing stability and transition in high-speed flows over realistic bodies. Examples of such bodies are swept wings of high-speed airplanes or the blunt conical bodies for hypersonic flight. We have extended the parabolized stability equations (PSE) for these situations and developed methods for solving these equations in disturbance environments typical of atmospheric conditions. Formulation, numerical methods, and program implementation have been selected toward applications in engineering practice. The PSE code has been utilized to analyze transition mechanisms in the flow over swept wings, an axisymmetric blunt cone and a sharp cone at angle of attack. Major efforts have been spent on receptivity mechanisms and on the effects of the disturbance environment on transition. Studies on the stability of 3D boundary layers suggest to replace the current tracing of discrete modes by tracing a field of modes in the flow direction. 收起