SPH MODELING OF VORTICITY GENERATION BY SHORT-CRESTED WAVE BREAKING
ICCE 2016 Cover Image
PDF

Keywords

GPUSPH
Short-crested waves
Wave breaking
Nearshore circulation
Vertical vorticity
Vortex

How to Cite

Wei, Z., & Dalrymple, R. A. (2017). SPH MODELING OF VORTICITY GENERATION BY SHORT-CRESTED WAVE BREAKING. Coastal Engineering Proceedings, 1(35), waves.1. https://doi.org/10.9753/icce.v35.waves.1

Abstract

This study investigates vorticity generation by short-crested wave breaking by using the mesh-free Smoothed Particle Hydrodynamics model, GPUSPH. The short-crested waves are created by generating intersecting wave trains in a numerical wave basin with a beach. The capability of GPUSPH to simulate short-crested waves is first validated by laboratory measurements. Then we examine short-crested wave breaking with two incident wave heights H = 0.2 m and 0.3 m. The larger incident wave breaks at the toe of the planar beach, while the smaller incident wave breaks above the planar beach. The breaking wave profile, current field, nearshore circulation pattern, and vertical vorticity field due to short-crested wave breaking are carefully compared between two incident waves.
https://doi.org/10.9753/icce.v35.waves.1
PDF

References

D. B. Clark, S. Elgar, and B. Raubenheimer. Vorticity generation by short-crested wave breaking. Geophysical Research Letters, 39(24), 2012.

R. A. Dalrymple. A mechanism for rip current generation on an open coast. Journal of Geophysical Research, 80(24):3485-3487, 1975.

R. G. Dean and R. A. Dalrymple. Water wave mechanics for scientists and engineers. World Scientific, Advanced Series on Ocean Engineering, 2, 1991.

J. Hammack, N. Scheffner, and H. Segur. Two-dimensional periodic waves in shallow water. Journal of Fluid Mechanics, 209:567-589, 1989.

J. Hammack, N. Scheffner, and H. Segur. A note on the generation and narrowness of periodic rip currents. Journal of Geophysical Research: Oceans, 96(C3):4909-4914, 1991.

A. Hérault, G. Bilotta, and R. A. Dalrymple. SPH on GPU with CUDA. Journal of Hydraulic Research, 48 (S1):74-79, 2010.

D. Johnson and C. Pattiaratchi. Boussinesq modelling of transient rip currents. Coastal Engineering, 53 (5):419-439, 2006.

D. H. Peregrine. Surf zone currents. Theoretical and Computational Fluid Dynamics, 10(1-4):295-309, 1998.

Z. Wei and R. A. Dalrymple. Numerical study on mitigating tsunami force on bridges by an SPH model. Journal of Ocean Engineering and Marine Energy, 2(3):365-380, 2016.

Z. Wei, R. A. Dalrymple, A. Hérault, G. Bilotta, E. Rustico, and H. Yeh. SPH modeling of dynamic impact of tsunami bore on bridge piers. Coastal Engineering, 104:26-42, 2015.

Z. Wei, R. A. Dalrymple, E. Rustico, A. Hérault, and G. Bilotta. Simulation of nearshore tsunami breaking by Smoothed Particle Hydrodynamics method. Journal of Waterway, Port, Coastal, and Ocean Engineering, 142(4):05016001, 2016.

Z. Wei, R. A. Dalrymple, M. Xu, R. Garnier, and M. Derakhti. Short-crested waves in the surf zone. Journal of Geophysical Research: Oceans, 2017.

Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.