Pulsed laser technique application to liquid and gaseous flows and the scattering power of seed materials

Abstract

Mie scattering computations have been performed for light scattered by small particles from a pulsed sheet of laser illumination and collected and imaged by a camera lens. From these computations the smallest particles that can be photographed in various fluid measurement situations, including air and water, have been determined in terms of system parameters such as laser power, light sheet geometry, f/No., and photographic film properties. The particle scattering requirements of the individual particle image mode and the speckle mode are compared.

© 1985 Optical Society of America

Non-Gaussian statistics of speckle noise of Young's fringes in speckle velocimetry

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Electrooptical image shifting for particle image velocimetry

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Video recording and quantitative analysis of seed particle track images in unsteady flows

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