INTERACTION BETWEEN POROUS MEDIA AND WAVE MOTION

TLDR

The article reviews the application of Darcy’s law to analyze waves moving past porous structures and highlights their engineering relevance. It aims to examine how porous structures influence incoming wave trains, serve as wavemakers under horizontal oscillation, and function as breakwaters in harbor settings. The study compares theoretical predictions from Darcy’s law and potential theory for waves interacting with a plate of regular gaps, and extends these analyses to wavemaker and breakwater configurations. The porous structure effectively reduces wave amplitudes and suppresses harbor resonance.

Abstract

▪ Abstract This article reviews the use of Darcy's law for analyzing waves moving past a porous structure. The engineering applications of these analyses are emph asized. The first part of the article studies theories on the effect of a porous structure on incoming wave trains. It also reviews the movement of waves past a plate with regular gaps in it in an attempt to compare the results of potential theory with those of Darcy's law. The second part reviews the use of a porous structure as a wavemaker when the structure is subject to horizontal oscillation. The third part extends the theories to the use of a porous structure as a breakwater in a two-dimensional harbor. The effect of the structure on reducing waves and suppressing harbor resonance is investigated.