Second-Order Radiation Boundary Condition for Water Wave Simulation with Large Angle Incidence
Publication: Journal of Engineering Mechanics
Volume 129, Issue 12
Abstract
A finite-element method (FEM) is used to simulate water wave propagation with large angle incidence at exterior boundaries. In this paper, the radiation boundary condition is expanded to a second-order approximation and a quadratic shape function is used in the FEM wave model. Cases used for verifications include wave scattering around a vertical cylinder and wave propagation over a submerged circular shoal with concentric contours. Numerical calculations based on this second-order radiation boundary condition are found to be in good agreement with theoretical and experimental results available. The numerical predictions show that this model has made a very good improvement over the first-order radiation boundary conditions for oblique wave incidence in coastal engineering.
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Information
Published In
Journal of Engineering Mechanics
Volume 129 • Issue 12 • December 2003
Pages: 1429 - 1438
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Oct 1, 2001
Accepted: May 14, 2003
Published online: Nov 14, 2003
Published in print: Dec 2003
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