Comparison of interrogation methods for particle-image velocimetry

Shirley Ashforth-Frost; Brian N. Dobbins; K. Jambunathan; Xiaoping Wu; Xiang-Yang Ju

doi:10.1117/12.163732

2 December 1993 Comparison of interrogation methods for particle image velocimetry

Shirley Ashforth-Frost, Brian N. Dobbins, K. Jambunathan, Xiaoping Wu, Xiang-Yang Ju

Proceedings Volume 2005, Optical Diagnostics in Fluid and Thermal Flow; (1993) https://doi.org/10.1117/12.163732
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

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.

Citation Download Citation

Shirley Ashforth-Frost, Brian N. Dobbins, K. Jambunathan, Xiaoping Wu, and Xiang-Yang Ju "Comparison of interrogation methods for particle image velocimetry", Proc. SPIE 2005, Optical Diagnostics in Fluid and Thermal Flow, (2 December 1993); https://doi.org/10.1117/12.163732

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