Abstract
Wave-driven sediment transport is one of the main drivers of beach morphodynamics. However, the creation of a comprehensive numerical model remains to be a challenging task due to complex mechanisms associated with unsteadiness and free-surface effects. Particularly for highly non-linear and skewed-asymmetric breaking waves, the boundary layer approximation (i.e., assuming horizontal pressure gradient is equal to local free-stream acceleration) is questionable. Moreover, wave-breaking-induced turbulence may approach the bed and further enhance sediment transport. Thus, a numerical model that can resolve the entire water column from the bottom boundary layer to the free-surface can be a powerful tool to understand wave-driven sediment transport.
Highlights
Wave-driven sediment transport is one of the main drivers of beach morphodynamics
The creation of a comprehensive numerical model remains to be a challenging task due to complex mechanisms associated with unsteadiness and free-surface effects
For highly non-linear and skewed-asymmetric breaking waves, the boundary layer approximation is questionable
Summary
Wave-driven sediment transport is one of the main drivers of beach morphodynamics. the creation of a comprehensive numerical model remains to be a challenging task due to complex mechanisms associated with unsteadiness and free-surface effects. Yeulwoo Kim, University of Delaware, ykim@udel.edu Ryan S. University of Delaware, rmieras@udel.edu Zhen Cheng, Woods Hole Oceanographic Institution, zcheng@whoi.edu Tian-Jian Hsu, University of Delaware, thsu@udel.edu Jack A.
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