Surface waves determination from pressure measurements at the bottom

Abstract

Measuring a free surface wave motion without intrusive probes is of most importance for practical applications, and one way to achieve this is to use pressure gauges at the bottom. From these pressure measurements, the question is how one can reconstruct the free surface. In this work, we present a method of surface recovery from bottom pressure, in the context of fully nonlinear waves. The problem is solved analytically for steady flows.

Dans le cadre des ondes de gravité (vagues), on présente une méthode pour reconstruire la surface libre à partir de mesures de pression sur le fond. Le problème est résolu analytiquement pour les écoulements permanents.

• surface gravity waves
• pressure measurement
• surface recovery

• onde de gravité
• mesure de pression
• reconstruction de surface