Holographic particle image velocimetry: optical conjugate reconstruction using a simplified transmission geometry

Rob D. Alcock; Colin P Garner; Neil A. Halliwell; Jeremy M. Coupland

doi:10.1117/12.510033

10 November 2003 Holographic particle image velocimetry: optical conjugate reconstruction using a simplified transmission geometry

Rob D. Alcock, Colin P Garner, Neil A. Halliwell, Jeremy M. Coupland

Author Affiliations +

Proceedings Volume 5191, Optical Diagnostics for Fluids, Solids, and Combustion II; (2003) https://doi.org/10.1117/12.510033
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

A new simplified Holographic Particle Image Velocimetry technique to make simultaneous measurements of 3D velocity vector information throughout a complex fluid flow is presented in this paper. The method uses a variation of Optical Conjugate Reconstruction with complex correlation analysis and dispenses with the need to have a Holographic Optical Element to correct for distortions introduced by non-uniform windows. Subsequent analysis to extract a map of particle velocity is performed digitally using ray tracing techniques to model the effect of the windows. Results are presented for measurements made within a thick windowed diesel engine, showing that flow velocity vectors can be measured to an accuracy of 3% using the technique and, illustrating the ray trace mapping procedure.

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Rob D. Alcock, Colin P Garner, Neil A. Halliwell, and Jeremy M. Coupland "Holographic particle image velocimetry: optical conjugate reconstruction using a simplified transmission geometry", Proc. SPIE 5191, Optical Diagnostics for Fluids, Solids, and Combustion II, (10 November 2003); https://doi.org/10.1117/12.510033

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