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http://dx.doi.org/10.3741/JKWRA.2021.54.1.39

Laboratory experiment of evolution of rip current according to the duration of successive ends of breaking wave crests  

Choi, Junwoo (Department of Land, Water and Environment research, Korea Institute of Civil Engineering & Building Technology)
Publication Information
Journal of Korea Water Resources Association / v.54, no.1, 2021 , pp. 39-48 More about this Journal
Abstract
The experiment of rip current at successive ends of breaking wave crests was conducted in a laboratory wave basin, and its time-varying evolution according to incident wave durations was observed by using ortho-rectified images. The experiment utilized the generation of a quasi nodal line of the honeycomb-pattern waves (i.e., intersecting wave trains) formed by out-of-phase motion of two piston-type wave makers arranged in the transverse direction, instead of the original honeycomb pattern waves which are generated when two wave trains propagate with slightly different wave directions. The particle moving distance and velocity caused by the rip current were measured by using the particle tracking technique. As a result, the rip current was survived for a while even without incident waves after its generation due to several successive ends of wave crests, and it moved the particles further out to sea.
Keywords
Laboratory experiment; Breaking wave crests; Duration of incident waves; Unsteady rip current; Ortho-rectified image; Particle tracking;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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