Author(s): Christos V. Makris; Constantine D. Memos; Yannis N. Krestenitis
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Keywords: SPH; Weak plunging; Surf zone turbulence; Coherent turbulent structures; Intermittent events
Abstract: The aim of the present study is the numerical simulation of surf zone turbulence under weakly plunging waves on a relatively mild impermeable slope. Smoothed Particle Hydrodynamics method is implemented in combination with a Smagorinsky-type Sub-Particle Scale turbulence closure approach, similarly to Large Eddy Simulations. A combination of heuristic approaches for the discrimination of turbulent fluctuations from the ordered wave motion is proposed. Results in the surf zone concern wave-induced mean flows, turbulent characteristics of weak plungers and bores, coherent turbulent structures on vertical cross-sections, and intermittent events at fixed gauges. Their statistics agree with experimental data.
Year: 2014