PRESSURES ON CIRCULAR CYLINDERS IN EQUILIBRIUM AND NONEQUILIBRIUM HYPERSONIC AIR FLOWS.
Abstract
Pressure distributions on circular cylinders were measured in arc-heated and perfect gas wind tunnels. The flow Mach numbers were near 7 at Reynolds numbers based on cylinder diameter from 160 to 1000. The stagnation enthalpies varied from 250 to 5050 BTU/lb sub m. For locations on the cylinder beyond 20 degrees from the stagnation point, the pressures determined in the perfect gas tunnel were found to be higher than those obtained from the arc-heated wind tunnel. Various possible causes for the discrepancies in pressures are examined. The results indicate the possible existence of rotational nonequilibrium in the cylinder shock layer for the high enthalpy tests. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1965
- Accession Number
- AD0622802
Entities
People
- G. M. Gregorek
- S. L. Petrie
Organizations
- Ohio State University