Hydrodynamic Forces on Oscillating and Nonoscillating Smooth Circular Cylinders in Crossflow

Abstract

A 12-in-diameter, 6-ft-long cylinder was towed horizontally 4 ft beneath the water surface and perpendicular to the flow. The cylinder was towed at a constant velocity under the following conditions: nonoscillating, oscillating in heave, oscillating in pitch (around the axis of the cylinder), and simultaneously oscillating in pitch and heave. Experimental data on lift, drag, and moment were obtained for Reynolds number from about 100,000 to above 1 million. The results show that the oscillations can significantly influence the magnitude of the lift, drag, and moments.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1972
Accession Number
AD0767022

Entities

People

  • David W Taylor
  • David W. Coder

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Engineering
  • Fluid Flow
  • Fluid Mechanics
  • Froude Number
  • Instrumentation
  • Mathematics
  • Measurement
  • Mechanics
  • Model Basins
  • New York
  • Physics Laboratories
  • Plastic Explosives
  • Pressure Gages
  • Reynolds Number
  • Ship Model Basins
  • Strouhal Number

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Fluid Dynamics.