WIT Press

Domain Regridding In The Computation Of Nonlinear Waves

Price

Free (open access)

Paper DOI

10.2495/FD940161

Volume

9

Pages

12

Published

1994

Size

1,128 kb

Author(s)

R. Subramanya & S.T. Grilli

Abstract

Domain regridding in the computation of nonlinear waves R. Subramanya & S.T. Grilli Ocean Engineering Department, University of Rhode Island, ABSTRACT An existing wave model based on fully nonlinear potential flow equations is used to study wave breaking induced by fixed or moving boundaries. The solution approach combines a higher-order Boundary Element Method (BEM) for solving Laplace's equation at a given time, and Lagrangian Taylor expansions for updating both the free surface position and the potential in time. A new node regridding technique is introduced in the model to adaptively improve resolution in selected regions of the free surface. Applications are presented that demonstrate the accuracy and the efficiency of the new technique. INTRODUCTION The fully nonlinear potential flow model by Grilli, Skourup and Svendsen * was improved by Grilli & Subramanya *•* in order to increase both the accuracy and the extent of computations for wave breaking induced by moving boundar

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