AN INVESTIGATION OF THE EFFECT OF FLUID INJECTION ON THE SKIN FRICTION COEFFICIENT OF AN INCOMPRESSIBLE TURBULENT BOUNDARY LAYER
MISSISSIPPI STATE UNIV MISSISSIPPI STATE DEPT OF AEROPHYSICS AND AEROSPACE ENGINEERING
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The skin-friction reduction of an incompressible, turbulent boundary layer due to fluid injection was found in a porous pipe in the pipe Reynolds number range of 68,000 to 201,500. A reduction in C sub F of approximately 20 percent was found with fluid injection quantities of .0004. The experimental results from the porous pipe agreed with the directly measured shear results on a flat plate by Roberts and Randall and agreed reasonably well with the results of Mickley and Davis. The experimental results gave a larger reduction in skin friction with fluid injection than predicted by theoretical analyses.
- Fluid Mechanics