A mixing-length model for the prediction of convex curvature effects on turbulent boundary layers
Abstract
A mixing-length model is developed for the prediction of turbulent boundary layers with convex streamwise curvature. For large layer thickness ratio, delta/R greater than 0.05, the model scales mixing length on the wall radius of curvature, R. For small delta/R, ordinary flat wall modeling is used for the mixing-length profile with curvature corrections, following the recommendations of Eide and Johnston (1976). Effects of streamwise change of curvature are considered; a strong lag from equilibrium is required when R increases downstream. Fifteen separate data sets were compared, including both hydrodynamic and heat transfer results. Six of these computations are presented and compared to experiment.
- Publication:
-
28th International Gas Turbine Conference and Exhibit
- Pub Date:
- March 1983
- Bibcode:
- 1983gatu.confS....A
- Keywords:
-
- Convective Heat Transfer;
- Mixing Length Flow Theory;
- Turbine Blades;
- Turbulence Models;
- Turbulent Boundary Layer;
- Coefficient Of Friction;
- Computational Fluid Dynamics;
- Convective Flow;
- Convexity;
- Curvature;
- Skin Friction;
- Wall Flow;
- Fluid Mechanics and Heat Transfer