Holographic Particle Image Velocimetry(HPIV) — An Extension of PIV to a 3-D Measuring Method
Particle Image Velocimetry is now a well-established, powerful tool for 2-D flow diagnostics. In its most common applications, a thin sheet of laser light illuminates a portion of the flow. A double exposure photograph is taken to record small light scattering particles seeding the flow. The 2-D flow field data obtained by this technique constitute great progress in comparison with single point measurements by conventional anemometry. Opposite to other whole-field techniques like smoke wire visualisation, for example, PIV is a quantitative measuring method. The opportunity to provide velocity data at one instant of time from a large field of view supports studies in the rapidly growing field of non stationary flows. This support would greatly gain, could PIV be extended in two respects:
Simultaneous recording over a certain region in depth
Registration of out-of-plane-components of the velocity vectors.
KeywordsVortex Coherence Smoke Autocorrelation Velocimetry
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- 2.Hinrichs, H.; Hinsch, K.; Kuhfahl, G.; Meinlschmidt, P.: Holography with controlled coherence for 3-D particle image velocimetry (PIV). In: Tschudi, T. (Ed.). Holographics 1990. Mesago Publishing GmbH.Google Scholar
© Springer-Verlag Berlin Heidelberg 1992