Unsteady Base Pressure Measurements in the Near Wake of a Cylinder with Imposed Three-Dimensional Disturbances,

Abstract

The effects of geometrically imposed three-dimensional disturbances that were introduced by a spanwise-periodic trailing-edge splitter plate on the instantaneous base pressure of a circular cylinder were investigated. Measurements indicate a direct coupling to the shedding frequency between the stagnation-line and base-pressure signals. A low frequency component in the base pressure power spectra was found and was directly related to the irregular shedding observed in the wake.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1995
Accession Number
ADA289498

Entities

People

  • A. A. Szewczyk
  • J. P. Borg

Organizations

  • University of Notre Dame

Tags

DTIC Thesaurus Topics

  • Base Pressure
  • Couplings
  • Frequency
  • Mathematics
  • Measurement
  • Power Spectra
  • Pressure Measurement
  • Spectra
  • Three Dimensional
  • Trailing Edges

Fields of Study

  • Physics

Readers

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