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Proceedings Paper

Quantitative interpretation of complex, unsteady flows via high-image-density particle-image velocimetry
Author(s): Donald Rockwell; Jung-Chang Lin
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Paper Abstract

Representative classes of unsteady separated flows are interpreted using high-image-density particle image velocimetry,l which allows determination of the instantaneous, sectional streamline patterns and distributions of vorticity. Comparison of these instantaneous realizations in two orthogonal planes reveals fundamental mechanisms of distortion of the vorticity concentrations. Furthermore, by acquiring successive images closely spaced in time, it is possible to construct 3D volume representations of iso-vorticity. These quantitative approaches reveal limitations of interpreting patterns of instantaneous and ensemble-averaged flow structure.

Paper Details

Date Published: 2 December 1993
PDF: 14 pages
Proc. SPIE 2005, Optical Diagnostics in Fluid and Thermal Flow, (2 December 1993); doi: 10.1117/12.163733
Show Author Affiliations
Donald Rockwell, Lehigh Univ. (United States)
Jung-Chang Lin, Lehigh Univ. (United States)

Published in SPIE Proceedings Vol. 2005:
Optical Diagnostics in Fluid and Thermal Flow
Soyoung Stephen Cha; James D. Trolinger, Editor(s)

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