VORTEX FORCE ANALYSIS OF WAVE-DRIVEN NEARSHORE CIRCULATION
AbstractIn this presentation, we examine 3-D structure of nearshore circulation driven by short-crested wave breaking using the 3-D Smooth Particle Hydrodynamic model, GPUSPH (HÃ©rault et al., 2010). The alongshore variation of incident wave field has been imposed by using the method of intersecting wave trains proposed by Dalrymple (1975). We use the 3-D vortex force formalism to analyze the various forcing mechanisms of the observed circulation. Of particular interest is the relative importance of the vortex force compared with the other wave-averaged forces. The accuracy of the depth-averaged vortex force based on the formulation of Smith  is also examined.
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