Lichuan guI

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Schematic illustration of stereo PIV measurement with free-surface visualization
(2011-2013, IIHR)

Secondary flow patterns at visualized free-surface deformation in case #1:(a) typical vortex pair under a clear free surface bulge; (b) hardly visible bulge with a weak vortex pair, (c) visible bulge with strong vortex pair, (d) asymmetric bulge with unbalanced vortex pair, (e) irregular free surface deformation with complex vortex structure. (2011-2013, IIHR)