Research on Bluff Body Vortex Wakes

Abstract

The basic approach is to obtain measurements in correlated laboratory experiments and numerical simulations of flows past bluff bodies, especially circular cylinders. Laboratory measurements include flow visualization and digital particle image velocimetry (DPIV). Numerical simulations are based on vortex methods. Interpretation of relations between velocity/vorticity fields and body forces is sought through the generalized Biot-Savart law. The role of Reynolds number, effects of three dimensionality, and effects of body motion are investigated. Relations to the mean near-wake flow and mean force (drag) are also studied, for their basic technological importance and also for insights into the unsteady motion.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1994
Accession Number
ADA286319

Entities

People

  • Anatol Roshko
  • Anthony W. Leonard
  • Morteza Gharib

Organizations

  • California Institute of Technology

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Base Pressure
  • Flow
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • High Resolution
  • Magnetic Fields
  • Measurement
  • New Mexico
  • Particle Image Velocimetry
  • Reynolds Number
  • Simulations
  • Turbulence
  • Turbulent Flow
  • Turbulent Mixing
  • Vortex Shedding
  • Vortices

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Fluid Mechanics and Fluid Dynamics.