Abstract
Due to the viscous effects, the inviscid Kantrowitz theory can not accurately predict the self-starting Mach number of supersonic inlets. A three-layer model is used to describe the main features of the flowfield in the critical state of two-dimensional (2D) supersonic inlets during self-starting, i.e. normal shock wave/boundary layer interaction. A method for predicting the self-starting limit of two-dimensional supersonic inlets is established, which is validated by unsteady numerical simulations. Compared to the CFD results, the predicted self-starting Mach number of two-dimensional supersonic inlets is much more accurate than that of the Kantrowitz theory. The present research is of importance for both design and operation of supersonic inlets.
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