Instantaneous velocity field measurements in unsteady gas flow by speckle velocimetry
- 15 February 1983
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 22 (4), 535-540
- https://doi.org/10.1364/ao.22.000535
Abstract
An application of speckle photography techniques to unsteady gas flow measurements is presented. The instrumentation developed for the analysis of double-exposure photographs by digital signal processing is described. It is shown that 2-D velocity fields can be measured even when the flow is not perfectly 2-D. Accuracy and limitations of these techniques are discussed.Keywords
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