Measurement volume defined by peak-finding algorithms in cross-correlation particle image velocimetry

Michael G. Olsen, Ronald Adrian

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

This note presents an analytical model that relates the displacement found by peak finding in cross-correlation particle image velocimetry using light-sheet illumination to the weighted volume average of the fluid velocity field. General equations are derived describing the cross-correlation function in light-sheet PIV. An approximate model is derived for light-sheet illumination by approximating the particle images as Gaussian. This results in a weighting function that can be used to define the measurement volume and to find biasing of the velocity measured for this volume.

Original languageEnglish (US)
JournalMeasurement Science and Technology
Volume12
Issue number2
DOIs
StatePublished - Feb 2001
Externally publishedYes

Fingerprint

Volume measurement
particle image velocimetry
Cross-correlation
Velocity measurement
cross correlation
Illumination
Lighting
illumination
Cross-correlation Function
weighting functions
Weighting Function
Approximate Model
Analytical Model
Velocity Field
Analytical models
velocity distribution
Fluid
Fluids
fluids

Keywords

  • Cross-correlation analysis
  • Particle image velocimetry
  • Peak finding

ASJC Scopus subject areas

  • Polymers and Plastics
  • Ceramics and Composites
  • Materials Science (miscellaneous)

Cite this

Measurement volume defined by peak-finding algorithms in cross-correlation particle image velocimetry. / Olsen, Michael G.; Adrian, Ronald.

In: Measurement Science and Technology, Vol. 12, No. 2, 02.2001.

Research output: Contribution to journalArticle

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