THE ISOBARS IN BOUNDARY LAYERS AT SUPERSONIC SPEEDS,
Abstract
From the analysis and experimental evidence presented it was found that in supersonic boundary layer flows the isobars may be located by the property of the sum of the characteristic constants being constant along them. These constants not only identify the Mach waves in the external flow but also their continuations into the boundary layer flow, so that the isobar directions are smoothly continuous in passing from outside to inside the boundary layer. For external simple wave flows with turbulent boundary layers the isobars are indeed found experimentally to be very close to linear extensions of the external ones. If the momentum integral equation is then derived using a swept element bounded by isobars, it retains its basic form but inherently accounts for all centrifugal effects. For example, certain difficulties that workers have met in the past in applying the momentum integral equation to the problem of turbulent boundary layer - shock wave interactions at moderate to high supersonic speeds are resolved when allowance is made for the inclination of the isobars to the surface normals. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1967
- Accession Number
- AD0663148
Entities
People
- A. D. Young
- D. F. Myring
Organizations
- Queen Mary University of London