PIV System Global Sizing Velocimeter (GSV)
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The TSI Global Sizing Velocimeter (GSV) system measures droplet size and velocity simultaneously in sprays and other multiphase flows. The measurement plane is illuminated with a light sheet from a double-pulsed Nd:YAG laser, and a single TSI PowerView™ Plus camera. This single camera, equipped with a standard 105mm camera lens and unique GSV aperture, captures frame-straddled images of the droplets. An interferometric technique measures size with highly accurate results. Velocity is extracted from the frame-straddled image pair using a unique and powerful tracking algorithm.
This technique is simultaneously more accurate and simpler to use than complex, expensive, and potentially error-prone systems employing multiple cameras.