SOLITARY-WAVE-INDUCED BOUNDARY LAYER FLOWS OVER PERMEABLE BEDS
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How to Cite

Pujara, N., Meza-Valle, C., & Liu, P. L.-F. (2020). SOLITARY-WAVE-INDUCED BOUNDARY LAYER FLOWS OVER PERMEABLE BEDS. Coastal Engineering Proceedings, (36v), waves.9. https://doi.org/10.9753/icce.v36v.waves.9

Abstract

In the nearshore environment, viscous effects of wave- induced boundary layer flows above sea beds are important in evaluating sediment fluxes and wave damping. These effects need to be included in phase- resolved nearshore models for accurate determination of quantities such as the bed shear stress and the decrease in wave height due to frictional dissipation. In this work, we analyze the boundary layers induced by a solitary wave on permeable sea beds (extending previous work of wave-induced boundary layers on an impermeable bed). We find that the velocity profiles and bed shear stress are sensitive to the hydraulic conductivity of the bed, but not extremely sensitive to the precise boundary condition at the bed-fluid interface.

https://doi.org/10.9753/icce.v36v.waves.9
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References

Beavers, Joseph (1967): Boundary conditions at a naturally permeable wall, Journal of Fluid Mechanics, vol. 30, pp. 197-207

Mei, Stiassnie, Yue (2005): Theory and applications of ocean surface waves, World Scientific.

Liu, Orfila (2004): Viscous effects on transient long-wave propagation, Journal of Fluid Mechanics, vol. 520, pp. 83-92.

Liu, Park, Cowen (2007a): Boundary layer flow and bed shear stress under a solitary wave, Journal of Fluid Mechanics, vol. 574, pp. 449-463.

Liu, Park, Lara (2007b): Long-wave induced flows in an unsaturated permeable seabed, Journal of Fluid Mechanics, vol. 586, pp. 323-345.

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