Transverse Forces on Rough Cylinders in Harmonic Flow.

Abstract

The transverse forces acting on smooth and sand-roughened circular cylinders immersed in an harmonically oscillating flow have been measured using a recently constructed U-shaped water tunnel. The lift coefficients were found to depend on Keulegan-Carpenter number but independent of the Reynolds number within the range of relative roughness and Reynolds numbers tested. The results have shown that the lift coefficients for smooth cylinders at low Reynolds numbers are nearly identical with those obtained for rough cylinders at very high Reynolds numbers at the corresponding amplitude ratios.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1977
Accession Number
ADA035851

Entities

People

  • Peter John Henning

Organizations

  • Naval Postgraduate School

Tags

DTIC Thesaurus Topics

  • Amplitude
  • Coefficients
  • Reynolds Number
  • Roughness
  • Transverse
  • Tunnels
  • Water Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.