A PRESSURE-INTERACTION THEORY FOR AXISYMMETRIC, HYPERSONIC, LAMINAR, UNSEPARATED FLOWS.
Abstract
Theories for axisymmetric viscous interaction are extended to include arbitrary values of the ratios of both surface to free-stream pressure and boundary-layer to body thickness, by identification of a new measure of transverse curvature in the boundary layer. Methods for four limit flows are isolated. Two of the methods are existing solutions for cones with either a strong shock wave or very thin boundary layer. One is a new local solution for general, very thin bodies; it becomes exact when the pressure ratio approaches one or is unbounded. The fourth is a local similarity solution for power-law bodies with linearizable small-disturbance flow; it becomes exact when the ratio of boundary-layer to body thickness vanishes or is unbounded. These methods have provided interpolated estimates of pressure on a very slender cone-cylinder in hypersonic flow that compare well with original experimental data. Similar predictions of heat transfer rate compare poorly. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 23, 1970
- Accession Number
- AD0703713
Entities
People
- John W. Ellinwood
- Robert L. Varwig
Organizations
- The Aerospace Corporation