AN INVESTIGATION OF THE EFFECT OF FLUID INJECTION ON THE SKIN FRICTION COEFFICIENT OF AN INCOMPRESSIBLE TURBULENT BOUNDARY LAYER

Abstract

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.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1969
Accession Number
AD0688166

Entities

People

  • C. A. Randall Jr.
  • S. C. Roberts

Organizations

  • Mississippi State University

Tags

DTIC Thesaurus Topics

  • Army Aviation
  • Boundaries
  • Boundary Layer
  • Coefficients
  • Engineering
  • Flow
  • Flow Rate
  • Friction
  • Heat Transfer
  • Layers
  • Measurement
  • New York
  • Pipe Flow
  • Reynolds Number
  • Skin Friction
  • Static Pressure
  • Turbulent Boundary Layer

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.