Influence of a Compliant Surface on a Supersonic Boundary Layer Stability

摘要

In the paper the disturbances development in supersonic boundary layer is considered within the framework of the linear and weakly nonlinear stability theory for the Mach number M = 2; 5.3 on the solid and flexible surfaces. It is established that flexible coverings influences on stability of a boundary layer even at a gas flow. At moderate supersonic speeds application of thin flexible coverings leads to flow stabilization, at least, in the field of large Reynolds's numbers. At high Mach numbers, for example for M=5.3, the area of low Reynolds's numbers where destabilization of the second mode is observed, extends in comparison with case M=2.0. However at Reynolds's numbers answering to the greatest instability at a rigid surface, the flexible covering stabilizes a flow.