Experimental Verification of the Inertial Oscillations of a Fluid in a Cylinder During Spin-up

Abstract

The dependence of inertial oscillation frequency on time since a cylindrical container began rotating from rest is established experimentally for several axially symmetric modes of oscillation. The oscillations were excited by including a sinusoidal perturbation in the rotation speed of the container which served to establish an exchange of fluid between the viscous boundary layers and the interior. The interior is set into oscillation by the boundary layer flow and the resulting axial pressure differences are used to establish the amplitude of the inertial oscillation.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1975
Accession Number
ADA018797

Entities

People

  • K. D. Aldridge

Organizations

  • University of British Columbia

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Agreements
  • Amplifiers
  • Aspect Ratio
  • Boundaries
  • Boundary Layer
  • Containers
  • Frequency
  • Layers
  • Measurement
  • Oscillation
  • Pressure Measurement
  • Pressure Transducers
  • Rotation
  • Steady State
  • Stratified Fluids
  • Time Dependence
  • Transducers

Fields of Study

  • Physics

Readers

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