Mean flow topics
Abstract
A proper practical assessment of the breakdown conditions for the van Driest temperature/velocity correlation and the associated transformation procedures in turbulent boundary layers was made. The effect of wall curvature in the transverse (cross-sectional) and in the longitudinal (camber) direction, on compressible turbulent boundary layers was studied. The boundary layer was formed on the outer surface of one of a number of slender cylinders aligned with the flow. For the subsonic tests two models were used. The first (series 01) consisted of an aluminum tube 3.65 m long and 25.4 mm in diameter. The front end was mounted on the tunnel settling chamber screens so that it extended along the contraction center line into the working section. The second model (series 02) consisted of a steel wire under tension passing through the screens. For the hypersonic test cases, results are presented for two wires and for a composite wire-cylinder model.
- Publication:
-
In its A Further Compilation of Compressible Boundary Layer Data With a Survey of Turbulence Data 12 p (SEE N82-20478 11-34
- Pub Date:
- November 1981
- Bibcode:
- 1981fccb.nasaT.....
- Keywords:
-
- Compressible Flow;
- Cylindrical Bodies;
- Hypersonic Boundary Layer;
- Turbulent Boundary Layer;
- Wall Flow;
- Curved Panels;
- Graphs (Charts);
- Pressure Gradients;
- Reynolds Number;
- Shock Layers;
- Slender Bodies;
- Subsonic Flow;
- Supersonic Flow;
- Temperature Measurement;
- Velocity Measurement;
- Walls;
- Wind Tunnel Tests;
- Fluid Mechanics and Heat Transfer