Overland Flow from Solitary Waves
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 117, Issue 3
Abstract
The one‐dimensional inundation over an impermeable horizontal bed by incident solitary waves is studied both experimentally and numerically. The numerical model is based on a set of Boussinesq long‐wave equations cast in the Lagrangian frame and a finite element technique is used to effect a numerical solution. Two nonbreaking solitary waves with amplitude ratios and 0.21 were studied, and for each wave both a dry bed and a wet bed were investigated. Near the still shoreline the wave steepness is sufficiently large to require a nonhydrostatic correction to the horizontal pressure gradient, and good agreement is found between the laboratory data and the numerical results for the dry bed. The wet‐bed case could not be modeled numerically. Although the initial collapse of the wave onto the bed is not influenced significantly by viscous effects, bed friction becomes important during the subsequent inundation phase. Peak inundation front speeds are reduced 10–15% for propagation over the wet bed as compared to the dry one.
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 117 • Issue 3 • May 1991
Pages: 247 - 263
Copyright
Copyright © 1991 ASCE.
History
Published online: May 1, 1991
Published in print: May 1991
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