Accession Number : ADA289498

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

Corporate Author : NOTRE DAME UNIV IN DEPT OF AEROSPACE AND MECHANICAL ENGINEERING

Personal Author(s) : Borg, J. P. ; Szewczyk, A. A.

PDF Url : ADA289498

Report Date : 1995

Pagination or Media Count : 2

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.

Descriptors :   *VORTEX SHEDDING, *WAKE, *BASE PRESSURE, REPRINTS, EXPERIMENTAL DATA, COMPARISON, POWER SPECTRA, FLOW VISUALIZATION, THREE DIMENSIONAL, CYLINDRICAL BODIES, WIND TUNNEL TESTS, UNSTEADY FLOW, NEAR FIELD, REYNOLDS NUMBER, HOT WIRE ANEMOMETERS, TRAILING EDGES, VARIABLE PRESSURE, STAGNATION POINT, COMPUTATIONAL FLUID DYANMICS.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE