Effect of concave streamline curvature on turbulent boundary layers
Abstract
An experimental study of the development and structure of turbulent boundary layers on a concave surface for three values of relatively high curvature parameter is presented. The measurements, which include both mean velocity and turbulence quantities, show the presence of decaying Taylor-Gortler type longitudinal vortices. While the conventional inner layer similarity holds, the defect layer seems to be decoupled with the inner layer. This is attributed to the enhanced mixing due to the concave curvature and longitudinal vortices. The normalized distribution of integral time scale and spectrum do not seem to differ from those in a flat plate boundary layer.
- Publication:
-
14th Fluid and Plasma Dynamics Conference
- Pub Date:
- June 1981
- Bibcode:
- 1981fpdy.confQ....P
- Keywords:
-
- Concavity;
- Curvature;
- Flow Distribution;
- Streamlining;
- Turbulent Boundary Layer;
- Velocity Distribution;
- Autocorrelation;
- Correlation Coefficients;
- Flat Plates;
- Pressure Distribution;
- Vortices;
- Wall Flow;
- Fluid Mechanics and Heat Transfer