MODELING SHEET FLOW UNDER BREAKING WAVES ON A SURF ZONE SANDBAR

Yeulwoo Kim; Ryan C. Mieras; Zhen Cheng; Tian-Jian Hsu; Jack A. Puleo

doi:10.9753/icce.v36.sediment.58

No. 36 (2018), Sediment Transport and Morphology

No. 36 (2018)

MODELING SHEET FLOW UNDER BREAKING WAVES ON A SURF ZONE SANDBAR

Sediment Transport and Morphology

https://doi.org/10.9753/icce.v36.sediment.58

Published 2018-12-30

Yeulwoo Kim
Ryan C. Mieras
Zhen Cheng
Tian-Jian Hsu
Jack A. Puleo

Yeulwoo Kim

Ryan C. Mieras

Zhen Cheng

Tian-Jian Hsu

Jack A. Puleo

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Kim, Y., Mieras, R. C., Cheng, Z., Hsu, T.-J., & Puleo, J. A. (2018). MODELING SHEET FLOW UNDER BREAKING WAVES ON A SURF ZONE SANDBAR. Coastal Engineering Proceedings, 1(36), sediment.58. https://doi.org/10.9753/icce.v36.sediment.58

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.

https://doi.org/10.9753/icce.v36.sediment.58

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References

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Cheng, Hsu, Calantoni (2017): SedFoam: A multi-dimensional Eulerian two-phase model for sediment transport and its application to momentary bed failure, Coastal Eng., 119, 32-50.

Jacobsen, Fuhrman, Fredsøe (2011): A wave generation toolbox for the open-source CFD library: OpenFoamâ"‡ , Int. J. Numer. Methods Fluids, 70(9), 1073-1088.

Kim, Cheng, Hsu, Mieras, Puleo (2017): A numerical investigation of sheet flow under non-breaking and breaking waves, Coast. Dyn. 2017, Helsingør, Denmark.

Mieras, Puleo, Anderson, Cox, Hsu (2017): Large-scale experimental observations of sheet flow on a sandbar under skewed-asymmetric waves, J. Geophys. Res. Oceans, 122, 5022-5045.

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.

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MODELING SHEET FLOW UNDER BREAKING WAVES ON A SURF ZONE SANDBAR

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