An unstructured FEM model based on Boussinesq equations and its application to the calculation of multidirectional wave run-up in a cylinder group
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论文类型：期刊论文
发表时间：2012-09-01
发表刊物：APPLIED MATHEMATICAL MODELLING
收录刊物：Scopus、EI、SCIE
卷号：36
期号：9
页面范围：4146-4164
ISSN号：0307-904X
关键字：Multidirectional wave; FEM; Boussinesq equations; Cylinder group
摘要：In this paper, a numerical model based on the improved Boussinesq equations derived by Beji and Nadaoka [5] is first developed using unstructured finite element technique. A locally rotated coordinate system is introduced to improve the treatment for the fully reflective boundaries whose orientation does not coincide with the coordinate system. The Adams-Bashforth-Moulton predictor-corrector scheme is used for time integration. Typical examples are employed to validate the numerical model. Based on the developed model, multidirectional wave propagation through a cylinder group is numerically calculated and the effects of the wave directionality on the waves in the group and the wave run-up on the cylinders are investigated. Numerical results show that the wave directionality has considerable effect on the wave run-up in the cylinder group. (C) 2011 Elsevier Inc. All rights reserved.