Effects of mass transfer on hypersonic turbulent boundary-layer properties.

Abstract

Turbulent boundary-layer profile measurements on a sharp 7.25° half angle porous cone have been made at Mach 8. The data obtained have been analyzed in the form of integral parameters. These results were correlated as a function of the blowing parameter and compared to currently used thickness prediction methods employed in the aerospace industry. Revised correlations based on the available data have been generated. The sensitivity of the velocity profile exponent to distance from the end of transition and mass addition has been established. Finally, the applicability of the Crocco theory for flows with mass addition has been examined.