Accession Number : ADP009015

Title :   PIV Measurements of Turbulent and Chaotic Structures in a Rotating Flow Using an Optical Correlator,

Corporate Author : TECHNICAL UNIV OF DENMARK LYNGBY

Personal Author(s) : Westergaard, C. H. ; Buchhave, P. ; Soerensen, J. N.

Report Date : 23 JUL 1992

Pagination or Media Count : 7

Abstract : An investigation of structures in a rotating flow in a closed cylinder by implementing PIV measurements and visualizations which are performed with Reynolds numbers ranging from 3000 to 8000; whereby, an attempt is made to study the time evolution of the flow. The PIV images are processed using an all optical correlator based on a photorefractive BSO crystal and a numerical correlator. A compact design of an all optical correlator is presented. (Author)

Descriptors :   *FLOW FIELDS, *TURBULENCE, *OPTICAL CORRELATORS, BUBBLES, ROTATION, RECIRCULATION, REYNOLDS NUMBER, REFRACTIVE INDEX, VELOCIMETERS, EXPERIMENTAL DATA, DENMARK, CYLINDRICAL BODIES, FOURIER TRANSFORMATION, BOUNDARY LAYER, THREE DIMENSIONAL FLOW, SPATIAL DISTRIBUTION, TIME SERIES ANALYSIS, OPTICAL IMAGES, COMPUTERIZED SIMULATION.

Subject Categories : Fluid Mechanics
      Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE