A Cauchy integral-equation method for the numerical solution of the steady water-wave problem

1978 ◽  
Vol 12 (4) ◽  
pp. 325-340 ◽  
Author(s):  
T. H. Lim ◽  
A. C. Smith
Keyword(s):  
Integral Equation ◽  
Numerical Solution ◽  
Water Wave ◽  
Integral Equation Method ◽  
Equation Method ◽  
Cauchy Integral ◽  
Wave Problem ◽  
Water Wave Problem

The inverse water wave problem of bathymetry detection

2013 ◽  
Vol 714 ◽  
pp. 562-590 ◽  
Author(s):  
Vishal Vasan ◽  
Bernard Deconinck
Keyword(s):  
Numerical Solution ◽  
Water Wave ◽  
Bottom Topography ◽  
Wave Surface ◽  
Nonlinear Method ◽  
Wave Problem ◽  
Water Wave Problem ◽  
Ill Posed ◽  
Non Local ◽  
Fully Nonlinear Method

AbstractThe inverse water wave problem of bathymetry detection is the problem of deducing the bottom topography of the seabed from measurements of the water wave surface. In this paper, we present a fully nonlinear method to address this problem in the context of the Euler equations for inviscid irrotational fluid flow with no further approximation. Given the water wave height and its first two time derivatives, we demonstrate that the bottom topography may be reconstructed from the numerical solution of a set of two coupled non-local equations. Owing to the presence of growing hyperbolic functions in these equations, their numerical solution is increasingly difficult if the length scales involved are such that the water is sufficiently deep. This reflects the ill-posed nature of the inverse problem. A new method for the solution of the forward problem of determining the water wave surface at any time, given the bathymetry, is also presented.

Sign in / Sign up

Export Citation Format

Share Document