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Contents
Contents
Correlation Imaging Velocimetry at the Coriolis facility
All comments or questions are welcome, contact sommeria@coriolis-legi.org
Contents
General principle:
Physical conditions:
Particles:
Laser illumination:
Camera:
Objective lens:
Frame period and contrast:
Bursts and time lapses:
The menu of Civit:
CIV in multi-planes and volumes:
Processing software:
Available software:
Basic algorithm
pattern-box:
search-box:
The cross-correlation (covariance) function:
Measurement grid:
False vectors:
Velocity interpolation (patch):
Hierarchical algorithm
Data format
CIV processing step by step:
Check image quality:
4.2 Run CIV1:
Check CIV1 results:
Remove false vectors(fix):
Velocity interpolation (patch):
CIV2:
Further iterations:
Analysis of uncertainty and resolution
Particle drift:
Laser sheet position and width:
Analysis of peak-locking errors:
Matlab programmes for image reading and post-processing:
Reading a raw image:
Reading a velocity field (.u or .v)
displacement histogram:
Interpolation
About this document ...
Joel Sommeria 2003-02-14
