Shadowgraph Observations of the Flow Past a Sphere and a Vertical Cylinder in a Density Stratified Liquid

Abstract

Shadowgraphs were made of the flow past a sphere in water that was vertically stratified with sodium chloride. The intent was to explore the flow patterns at low Reynolds numbers with particular emphasis on any asymmetries due to the stratification. The shadowgraphs recorded three-dimensional phenomena and the visualization was in agreement with that obtained with dye inserted at the sphere. Thus the optical technique is useful even though the lack of two- dimensionality prohibits the drawing of any quantitative conclusions.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1971
Accession Number
AD0743132

Entities

People

  • Peter Fitzgerald
  • Walter R. Debler

Organizations

  • University of Michigan

Tags

Communities of Interest

  • Air Platforms
  • Cyber
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Detectors
  • Diameters
  • Elevation
  • Flow
  • Fluid Dynamics
  • Fluid Mechanics
  • Fresh Water
  • Mechanics
  • Photographs
  • Physics Laboratories
  • Reynolds Number
  • Richardson Number
  • Salt Water
  • Solenoid Valves
  • Stratified Fluids
  • Three Dimensional
  • Two Dimensional

Readers

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