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Proceedings Paper

Comparison of interrogation methods for particle-image velocimetry
Author(s): Shirley Ashforth-Frost; Brian N. Dobbins; K. Jambunathan; Xiaoping Wu; Xiang-Yang Ju
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Paper Abstract

Two methods of extracting velocity vectors from particle image patterns are described. The results are compared with Particle Image Velocimetry using the well established cross- correlation technique for a case of natural convection from a heated tube submerged in a water bath. In an endeavour to improve the accuracy of velocity extraction, velocity gradients have been introduced into the algorithm. The procedure is repeated to a chosen iterative limit. Results presented show the effect of the gradient operator on the velocities obtained in regions where the velocity gradient is large.

Paper Details

Date Published: 2 December 1993
PDF: 12 pages
Proc. SPIE 2005, Optical Diagnostics in Fluid and Thermal Flow, (2 December 1993); doi: 10.1117/12.163732
Show Author Affiliations
Shirley Ashforth-Frost, Nottingham Trent Univ. (United Kingdom)
Brian N. Dobbins, Nottingham Trent Univ. (United Kingdom)
K. Jambunathan, Nottingham Trent Univ. (United Kingdom)
Xiaoping Wu, Univ. of Science and Technology of China (China)
Xiang-Yang Ju, Univ. of Science and Technology of China (China)

Published in SPIE Proceedings Vol. 2005:
Optical Diagnostics in Fluid and Thermal Flow
Soyoung Stephen Cha; James D. Trolinger, Editor(s)

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