Separation and Reattachment Near Square Protuberances in Low Reynolds Number Couette Flow

Abstract

Numerical solutions of the steady-state Navier-Stokes equations are obtained which describe flow past a square protuberance immersed in a plane Couette flow. The numerical solutions are illustrated with velocity vector plots, and plots of streamlines and vorticity contours in the flow field for Reynolds numbers between one and 200, based on plate velocity and protuberance height. A small separation bubble is predicted upstream of the protuberance with length and height almost independent of Reynolds number. The downstream separation bubble has a height always less than the protuberance height, but a length which increases almost linearly with Reynolds number reaching more than twenty-five protuberance heights at Re = 200. The flow perturbations caused by the protuberance are shown to persist far downstream of the protuberance at Re = 100 and 200.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1974
Accession Number
AD0773663

Entities

People

  • Clarence W. Kitchens Jr.

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Boundary Layer Flow
  • Computational Fluid Dynamics
  • Computational Science
  • Couette Flow
  • Difference Equations
  • Equations
  • Flow
  • Flow Fields
  • Fluid Dynamics
  • Fluid Flow
  • Navier Stokes Equations
  • Reynolds Number
  • Steady Flow
  • Steady State
  • Two Dimensional

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Mathematics or Statistics