Flow and heat transfer in the film cooling zone of a turbulent boundary layer with directional coolant delivery
Abstract
Coolant injection through a porous wall provides an efficient way of controlling heat transfer and friction in a turbulent boundary layer. Here, film cooling is examined with emphasis on the case where the coolant is supplied at an angle to the surface, giving rise to a tangential velocity component. Experimental data are presented on flow structure and heat transfer in the film cooling region, and a method is proposed for calculating local friction and heat transfer coefficients.
- Publication:
-
Mechanics of Nonuniform and Turbulent Flows
- Pub Date:
- 1989
- Bibcode:
- 1989mntf.rept...80D
- Keywords:
-
- Boundary Layer Flow;
- Film Cooling;
- Heat Transfer;
- Turbulent Boundary Layer;
- Coolants;
- Heat Transfer Coefficients;
- Porous Walls;
- Fluid Mechanics and Heat Transfer