1 November 1990 Quantitative fluid flow analysis by laser speckle velocimetry
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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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert E. Rowlands, Z. Feng, T. Dixon Dudderar, "Quantitative fluid flow analysis by laser speckle velocimetry", Proc. SPIE 1404, ICALEO '89: Optical Methods in Flow and Particle Diagnostics, (1 November 1990); doi: 10.1117/12.34954; https://doi.org/10.1117/12.34954

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