cranfield0080

effect distribut three dimension rough surfac cool boundari layer transit later spread turbul superson speed investig made langley foot superson pressur tunnel mach number determin effect distribut rough boundari layer transit model surfac adiabat wall temperatur cool effect surfac cool later spread turbul distribut granular type singl spheric rough particl use transit boundari layer determin hot wire anemomet transit trigger mechan threedimension rough superson speed appear previous observ subson speed fact critic valu rough reynold number paramet valu turbul spot initi rough found approxim superson subson speed complet local condit top rough includ densiti viscos consid formul rough reynold number three dimension rough reynold number less critic valu rough introduc disturb suffici magnitud influenc transit surfac cool although provid theoret increas stabil small disturb increas import extent valu critic rough reynold number three dimension rough particl cool therefor effect boundarylay thick densiti viscos actual promot transit due exist three dimension surfac rough given mach reynold number measur later spread turbul boundari layer appear unaffect increas laminar stabil deriv surfac cool