Abstract
Introduction N efforts have been made to develop simple prediction schemes for skin friction and to evaluate Reynolds analogy factors 2Ch/Cf for turbulent supersonic and hypersonic boundary-layer flows on flat plates or equivalent zero pressure gradient surfaces. Such correlation schemes, which are useful for predicting turbulent heat transfer, are available for somewhat limited combinations of Mach number and wall cooling. l In this Note, a correlation of heat-transfer data is established for zero-pressure-gradient turbulent boundary layers with high wall cooling (Tw/Taw (hw/haw) >0.01. Although Me and hw/haw cannot be varied independently using room temperature models, hw/haw can be varied over a wide range, whereas the corresponding range of Me is relatively narrow.
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