AN EXPERIMENTAL STUDY OF SECONDARY FLOW IN JETDRIVEN VORTEX CHAMBERS

Abstract

The characteristics of vortex flows in enclosed chambers are strongly influenced by the existence of three-dimensional secondary flows in the endwall boundary layers and in a region near the axis. Classical 'line-vortex' or two- dimensional treatments fail to account for these effects and no theoretical treatment to date has been able to account for all of the complicated interactions. A series of flow visualization experiments was conducted to obtain a qualitative picture of the flow and the effects of changes in geometry and flow parameters. A transparent vortex chamber and selective dye injection into the water-working fluid were utilized. Interest centered on changes in the surface and shape of the end walls and on the exit hole. A form of endwall- boundary-layer slot blowing was effective in altering the secondary flow pattern. An approximate analysis is made to determine the effect of non-planar end-walls on boundary layer radial mass flow, based on the G. I. Taylor result for a conical swirl flow.

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Document Details

Document Type
Technical Report
Publication Date
Jan 27, 1964
Accession Number
AD0433052

Entities

People

  • D. H. Ross

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Axial Flow
  • Boundaries
  • Boundary Layer
  • Boundary Layer Flow
  • Dyes
  • Flow Rate
  • Flow Visualization
  • Fluid Dynamics
  • Geometry
  • Mass Flow
  • Photographic Images
  • Photographs
  • Photography
  • Reynolds Number
  • Secondary Flow
  • Three Dimensional
  • Vortices

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.