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Journal of Flow Visualization and Image Processing
SJR: 0.11 SNIP: 0.312 CiteScore™: 0.1

ISSN Print: 1065-3090
ISSN Online: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v16.i1.10
pages 1-18

PIV MEASUREMENTS OF SURFACE FLOWS IN LABORATORY WAVE BASINS

Liang He
Halcrow HPA, 22 Cortlandt Street, New York, NY 10007, USA
Jack A. Puleo
Center for Applied Coastal Research, Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716, USA

ABSTRACT

Geo-referenced imagery and particle image velocimetry (PIV) are used to quantify surface flow fields in a laboratory wave basin. An application of the technique for topographically controlled rip currents is described. Exact comparisons between PIV data on an undulating free surface and groundtruth velocity data are difficult to perform owing to adverse effects of fixed objects in PIV imagery and the necessary placement of current meters below wave trough level. However, mean PIV velocity magnitudes compared favorably with acoustic Doppler current meter data from roughly 0.05 m below the still water level with root-mean-square differences of 0.077 m·s−1 in the cross-shore and 0.059 m·s−1 in the alongshore directions.