Journal
COASTAL ENGINEERING
Volume 46, Issue 2, Pages 89-107Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0378-3839(02)00043-1
Keywords
wave runup; breaking waves; Boussinesq equations
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In this paper, a moving boundary technique is developed to investigate wave runup and rundown with depth-integrated equations. Highly nonlinear and weakly dispersive equations are solved using a high-order finite difference scheme. An eddy viscosity model is adopted for wave breaking so as to investigate breaking wave runup. The moving boundary technique utilizes linear extrapolation through the wet-dry boundary and into the dry region. Nonbreaking and breaking solitary wave runup is accurately predicted by the proposed model, yielding a validation of both the wave breaking parameterization and the moving boundary technique. Two-dimensional wave runup in a parabolic basin and around a conical island is investigated, and agreement with published data is excellent. Finally, the propagation and runup of a solitary wave in a trapezoidal channel is examined. (C) 2002 Elsevier Science B.V. All rights reserved.
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