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Erschienen in: Experiments in Fluids 5/2005

01.11.2005 | Research Article

A variational filtration and interpolation technique for PIV employing fluid dynamical constraints

verfasst von: Y. D. Afanasyev, E. K. Demirov

Erschienen in: Experiments in Fluids | Ausgabe 5/2005

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Abstract

A variational method for post-processing of the velocity fields obtained by particle image velocimetry (PIV) is described. This method allows one to effectively reconstruct the flow field in the areas of the domain where the spurious vectors were discarded either by other filters or manually. If the spurious vectors cannot be removed, they are smoothed in with the surrounding field so that their effect is significantly reduced. The method is based on the application of dynamical constraints such as continuity, smoothness and matching to the original data. The results of the application of the developed algorithm to the velocity fields obtained by PIV in laboratory experiments with quasi-two-dimensional vortex dipoles are discussed.

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Metadaten
Titel
A variational filtration and interpolation technique for PIV employing fluid dynamical constraints
verfasst von
Y. D. Afanasyev
E. K. Demirov
Publikationsdatum
01.11.2005
Verlag
Springer-Verlag
Erschienen in
Experiments in Fluids / Ausgabe 5/2005
Print ISSN: 0723-4864
Elektronische ISSN: 1432-1114
DOI
https://doi.org/10.1007/s00348-005-0017-5

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