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Experiments in Fluids
Erschienen in: Experiments in Fluids 6/2007

01.06.2007 | Research Article

Modeling and correction of peak-locking in digital PIV

verfasst von: Murali R. Cholemari

Erschienen in: Experiments in Fluids | Ausgabe 6/2007

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Abstract

The systematic tendency of PIV evaluations to bias towards integral pixel values is known as peak-locking. These errors, although small, significantly affect the statistics extracted from such measurements. In this paper, the process by which such errors accrue is modeled, and a scheme for the removal of the same is suggested. Specifically, the modeling process considers FFT PIV with discrete window offset. The results are applied to actual situations and the results are found to be encouraging. The process is computationally inexpensive, and can be applied as a post processing technique to existing data to correct peak-locking.
Vorheriger Artikel Measurement of velocity in rotational flows using ultrasonic anemometry: the flowmeter
Nächster Artikel Determination of complete velocity gradient tensor by using cinematographic stereoscopic PIV in a turbulent jet

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Metadaten
Titel
Modeling and correction of peak-locking in digital PIV
verfasst von
Murali R. Cholemari
Publikationsdatum
01.06.2007
Verlag
Springer-Verlag
Erschienen in
Experiments in Fluids / Ausgabe 6/2007
Print ISSN: 0723-4864
Elektronische ISSN: 1432-1114
DOI
https://doi.org/10.1007/s00348-007-0300-8

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