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 language | English (US) |
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Pages (from-to) | N14-N16 |
Journal | Measurement Science and Technology |
Volume | 12 |
Issue number | 2 |
DOIs | |
State | Published - Jan 1 2001 |
Externally published | Yes |
Keywords
- Cross-correlation analysis
- Particle image velocimetry
- Peak finding
ASJC Scopus subject areas
- Instrumentation
- Engineering (miscellaneous)
- Applied Mathematics