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Proceedings Paper

Quantitative fluid flow analysis by laser speckle velocimetry
Author(s): Robert E. Rowlands; Z. Feng; T. Dixon Dudderar
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Paper Abstract

Synergizing laser speckle velocimetry (LSV) or particle image velocimetry (PIV) with finite-element smoothing is shown to be a highly effective means of determining the derivatives, divergences, and vorticities of a flow field. A ''pseudo'' finite-element technique is used to smooth and differentiate discrete 2D velocity field data generated by the pointwise analysis of an LSV or a PIV specklegram. This technique is shown to be significantly more effective than either a 1D cubic spline technique or a straight finite-difference technique.

Paper Details

Date Published: 1 November 1990
PDF: 8 pages
Proc. SPIE 1404, ICALEO '89: Optical Methods in Flow and Particle Diagnostics, (1 November 1990); doi: 10.1117/12.34954
Show Author Affiliations
Robert E. Rowlands, Univ. of Wisconsin (United States)
Z. Feng, AT&T Bell Labs. (United States)
T. Dixon Dudderar, AT&T Bell Labs. (United States)

Published in SPIE Proceedings Vol. 1404:
ICALEO '89: Optical Methods in Flow and Particle Diagnostics
Marshall B. Long, Editor(s)

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