Abstract
A simple method is developed to predict heating to a flat plate surface influenced by an impinging shock wave emanating from a two-dimensional wedge. Once the freestream flow conditions and shock generator wedge angle are specified, peak heating values can be computed for either laminar or turbulent oncoming flow. Flow that is init ial ly laminar can either remain laminar or be tripped to transitional or turbulent flow by the impinging shock wave. A transition Reynolds number for flow perturbed by the impinging shock wave is also derived from heating correlations. Finally, the study results indicate that the extremely large increases in interference heating over the undisturbed flat plate values are partially due to boundary-layer transition caused by the impinging shock wave. Experimental data obtained from simple geometry wedge/flat plate models as well as recent results from Space Shuttle models are used in this analysis.
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