Long wave run-up on random beaches

Denys Dutykh, Céline Labart, Dimitrios Mitsotakis

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15 Scopus citations

Abstract

The estimation of the maximum wave run-up height is a problem of practical importance. Most of the analytical and numerical studies are limited to a constant slope plain shore and to the classical nonlinear shallow water equations. However, in nature the shore is characterized by some roughness. In order to take into account the effects of the bottom rugosity, various ad hoc friction terms are usually used. In this Letter, we study the effect of the roughness of the bottom on the maximum run-up height. A stochastic model is proposed to describe the bottom irregularity, and its effect is quantified by using Monte Carlo simulations. For the discretization of the nonlinear shallow water equations, we employ modern finite volume schemes. Moreover, the results of the random bottom model are compared with the more conventional approaches.

Original languageBritish English
Article number184504
JournalPhysical Review Letters
Volume107
Issue number18
DOIs
StatePublished - 26 Oct 2011

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