A Positive Displacement Oscillatory Water Tunnel.

Abstract

The water tunnel described produces sinusoidal flow with peak velocities adjustable from 0 to at least 30 centimeters per second for any period between 3 and 25 seconds. The tunnel is of U-tube design with the middle horizontal part comprising the test section. The vertical end parts are two cylinders with tight-fitting pistons at one end, and two reservoirs open to air at the other. The pistons are driven by a variable-speed electric motor, with an adjustable counterweight permitting operation at resonance at any period. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1977
Accession Number
ADA038593

Entities

People

  • Karl E. B. Lofquist

Organizations

  • National Institute of Standards and Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aluminum
  • Ball Bearings
  • Coastal Engineering
  • Connecting Rods
  • Displacement
  • Drive Shafts
  • Drives
  • Energy
  • Engineering
  • Equations
  • Fluid Mechanics
  • Frequency
  • Friction
  • Gears
  • Rods
  • Water Tunnels
  • Worm Gears

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Electrical Engineering
  • Fluid Dynamics.