Wall mass transfer and pressure gradient effects on turbulent skin friction
Abstract
The effects of mass injection and pressure gradients on the drag of surfaces were studied theoretically with the aid of boundary-layer and Navier-Stokes codes. The present investigation is concerned with the effects of spatially varying the injection in the case of flat-plate drag. Effects of suction and injection on wavy wall surfaces are also explored. Calculations were performed for 1.2 m long surfaces, one flat and the other sinusoidal with a wavelength of 30.5 cm. Attention is given to the study of the effect of various spatial blowing variations on flat-plate skin friction reduction, local skin friction coefficient calculated by finite difference boundary-layer code and Navier-Stokes code, and the effect of phase-shifting sinusoidal mass transfer on the drag of a sinusoidal surface.
- Publication:
-
AIAA Journal
- Pub Date:
- January 1984
- DOI:
- 10.2514/3.8353
- Bibcode:
- 1984AIAAJ..22..143W
- Keywords:
-
- Computational Fluid Dynamics;
- Mass Transfer;
- Pressure Gradients;
- Skin Friction;
- Turbulent Flow;
- Wall Flow;
- Coefficient Of Friction;
- Drag Reduction;
- Finite Difference Theory;
- Navier-Stokes Equation;
- Viscous Flow;
- Fluid Mechanics and Heat Transfer