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论文类型：期刊论文

发表时间：2008-06-01

发表刊物：OCEAN ENGINEERING

收录刊物：SCIE、EI

卷号：35

期号：8-9

页面范围：920-930

ISSN号：0029-8018

关键字：irregular frequency; partial discontinuous higher order element; boundary integral equation

摘要：The phenomenon of irregular frequencies is a puzzle in the course of calculating the interaction of waves and structures by the boundary element method. To remove the irregular frequencies, the modified integral domain method is adopted, and continuous higher order elements and partial discontinuous higher order elements are used for discretization. By these means, the effects of the irregular frequencies are effectively removed. Effective strategies have been adopted to deal with singular integrals and nearly singular integrals at different situations. The numerical results of the,horizontal wave force on a uniform cylinder in the first order and second order diffraction problems show that the present method has a good validity. At the same time, the influence of collocation parameter on accuracy of numerical results is examined in detail. (C) 2008 Elsevier Ltd. All rights reserved.