Data validation, false vectors correction and derived magnitudes calculation on PIV data

Due to the particular features that appear in the vector maps delivered by the PIV method, there are post-processing steps that can substantially enhance its performance. These steps include: detection of false vectors; correction of these vectors; and the calculation of derived flow magnitudes. Foc...

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Bibliographic Details
Published inMeasurement science & technology Vol. 8; no. 12; pp. 1493 - 1501
Main Authors Nogueira, J, Lecuona, A, Rodríguez, P A
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.12.1997
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Summary:Due to the particular features that appear in the vector maps delivered by the PIV method, there are post-processing steps that can substantially enhance its performance. These steps include: detection of false vectors; correction of these vectors; and the calculation of derived flow magnitudes. Focuses on calculation of the first spatial derivative on a two-dimensional flow configuration. New algorithms are described with the aim of applying them in a coherent way. Where applicable, an analytical tool for filter analysis and design is explained. Application to synthetic and real PIV data is presented as well as a performance comparison with other algorithms in terms of accuracy, frequency response and error propagation. (Original abstract - amended)
Bibliography:ObjectType-Article-2
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ISSN:0957-0233
1361-6501
DOI:10.1088/0957-0233/8/12/012