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

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 a...

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Bibliographische Detailangaben
Hauptverfasser:	Westergaard, C. H, Buchhave, P, Soerensen, J. N
Format:	Report
Sprache:	eng
Schlagworte:	BOUNDARY LAYER BUBBLES Component Reports COMPUTERIZED SIMULATION CYLINDRICAL BODIES DENMARK Electrooptical and Optoelectronic Devices EXPERIMENTAL DATA FLOW FIELDS Fluid Mechanics Foreign reports FOURIER TRANSFORMATION OPTICAL CORRELATORS OPTICAL IMAGES PIV(Particle Image Velocimetry) RECIRCULATION REFRACTIVE INDEX REYNOLDS NUMBER Rotating flow ROTATION SPATIAL DISTRIBUTION THREE DIMENSIONAL FLOW TIME SERIES ANALYSIS TURBULENCE VELOCIMETERS
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Beschreibung
Zusammenfassung:	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) This article is from 'International Symposium on Applications of Laser Techniques to Fluid Mechanics and Workshop on Computers in Flow Measurements (6th) Held in Lisbon, Portugal on July 20-23, 1992', AD-A258 510, p27.3.1-27.3.7.