Drag reduction potentials of turbulence manipulation in adverse pressure gradient flows
Abstract
It is noted that there is no neccessary correlation between skin friction minimization and drag minimization; the latter requires that account should be taken of both friction and pressure drag, so that in adverse pressure gradient regions, both low skin friction and small shape factor should be pursued. This restricts drag-reduction potentials, since skin friction redictions often entail shape-factor increments. At larger adverse pressure gradients, this may mean that skin friction must be increased to reduce drag.
- Publication:
-
AIAA Journal
- Pub Date:
- March 1988
- DOI:
- 10.2514/3.9898
- Bibcode:
- 1988AIAAJ..26..367V
- Keywords:
-
- Boundary Layers;
- Drag Reduction;
- Flat Plates;
- Pressure Gradients;
- Turbulent Flow;
- Viscous Drag;
- Pressure Drag;
- Shear Layers;
- Skin Friction;
- Trailing Edges;
- Fluid Mechanics and Heat Transfer