Digital speckle-pattern interferometry as a full-field fluid-velocimetry technique.
We present a novel fluid-velocimetry technique based on speckle interferometry. The light scattered from an illuminated plane is recorded with a CCD camera at the same time as a speckled reference beam. Substraction of two nonsimultaneous frames provides information about the velocity field for an out-of-plane component. An application to a Rayleigh-Bénard convective flow is given.
Andrés
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Arroyo
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Hinrichs
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Quintanilla
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