Structure of the Compressible Turbulent Shear Layer
Abstract
The large-scale structure of the turbulent compressible shear layer is investigated in a two-stream supersonic wind tunnel through a series of experiments. Double-exposure schlieren photography reveals that the two convective Mach numbers, corresponding to each side of the shear layer, are very different, one sonic or supersonic and the other low subsonic. This contradicts, the current isentropic model of the structure which predicts them to be equal or very close. It is shown that addition of shock-wave effects to that model allows for the asymmetric trends observed in the experiments. An inclined view of the flow provides sketchy information about the spanwise orientation of the large- scale structure and does not reveal any pronounced obliquity. Attempts to enhance mixing by modifying the trailing edge were unsuccessful.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 26, 1989
- Accession Number
- ADA213251
Entities
People
- Dimitri Papamoschou
Organizations
- California Institute of Technology