When pulsed laser velocimetry (PLV) is used to measure fluid velocity over extended regions of fluid flow, fast and efficient interrogation methods are required to extract velocity information from the displacements of particle images on the PLV photograph. One such method, developed for use with a computer-controlled interrogation system, is examined. The technique involves the interrogation of one-dimensional orthogonally-compressed images of the photographic image field, and is intended for PLV photographs with high particle image densities. The displacement vector for a single interrogation is obtained by performing several overlapping 1-D cross-correlations within a given interrogation region, then summing the correlation distributions in the X and Y directions.
|Original language||English (US)|
|Title of host publication||American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED|
|Place of Publication||New York, NY, USA|
|Number of pages||6|
|State||Published - 1987|
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