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Proceedings Paper

Three-dimensional flow diagnostics by holographic diffraction image velocimetry
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Paper Abstract

Despite the rapid proliferation and increased capabilities of computational fluid diagnostic algorithms, there still exists a need for experimental techniques which can provide global information in an accurate and expeditious manner for augmentation and/or verification of numerical methods. While many optical, non-intrusive techniques such as particle imaging velocimetry have been developed and refined in recent years, systems which can simultaneously extract all three-velocity components are few. We present a technique which utilizes a dual-reference-beam holographic recording and reconstruction system along with a two-step data acquisition and processing method for the determination of in- and out-of-plane velocity components form a single viewing direction. Although still under development, the method, termed holographic diffraction image velocimetry, shows promise to become a useful tool for accurate gross-field diagnostics of complex flows.

Paper Details

Date Published: 21 November 1997
PDF: 6 pages
Proc. SPIE 3172, Optical Technology in Fluid, Thermal, and Combustion Flow III, (21 November 1997); doi: 10.1117/12.293397
Show Author Affiliations
James S. Slepicka, Univ. of Illinois/Chicago (United States)
Soyoung Stephen Cha, Univ. of Illinois/Chicago (United States)

Published in SPIE Proceedings Vol. 3172:
Optical Technology in Fluid, Thermal, and Combustion Flow III
Soyoung Stephen Cha; James D. Trolinger; Masaaki Kawahashi, Editor(s)

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