An absorbing boundary condition for free surface water waves
B. Düz (Maritime Research Institute Netherlands (MARIN), TU Delft - Mechanical Engineering)
M.J.A. Borsboom (Deltares)
A.E.P. Veldman (Rijksuniversiteit Groningen)
P. R. Wellens (Deltares, TU Delft - Mechanical Engineering)
R. H.M. Huijsmans (TU Delft - Mechanical Engineering)
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Abstract
In this paper, the use of an absorbing boundary condition (ABC) is investigated for the numerical simulation of free surface water waves. An enhanced type of an ABC based on the first- and second-order Higdon boundary conditions is presented. The numerical implementation of the ABC using a staggered grid arrangement is explained in detail. Numerical examples are provided to demonstrate the performance of the proposed boundary conditions.
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