基于HOBEM和全控源的全非线性圆形数值波盆的开发

IF 4.2 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Engineering Analysis with Boundary Elements Pub Date : 2025-03-19 DOI:10.1016/j.enganabound.2025.106223

Lei Fu , Dezhi Ning , Deborah Greaves , Lars Johanning

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引用次数: 0

摘要

基于势流理论和高阶边界元方法，建立了一种全新的全非线性圆形数值波盆。通过控制均匀分布在三维柱面上的造波源的波速矢量输入，使波盆具有全方位的造波能力。波盆用于模拟非线性波，包括单向、多向甚至全向聚焦波。这些波作为典型案例，体现了波盆产生多向、多频波和局域畸变波的优势。结果表明，在强非线性波的传播和变形过程中，完全非线性自由面边界条件允许波盆捕获高阶波分量。环形人工阻尼层有效地吸收来自各个方向的波能，通过减少杂散反射来保证模拟的稳定性。这种完全非线性的数值波盆克服了传统波槽在波向角方面的局限性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Development of a fully non-linear circular numerical wave basin based on the HOBEM and omni-controlling sources

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Development of a fully non-linear circular numerical wave basin based on the HOBEM and omni-controlling sources

A novel fully nonlinear circular numerical wave basin is developed based on potential flow theory and high-order boundary element methods (HOBEM). By controlling the vector input of wave velocity from wave-making sources uniformly distributed on the three-dimensional cylindrical surface, the wave basin is capable of generating waves in all directions. The wave basin is used to simulate nonlinear waves, including uni-directional, multi-directional, and even omni-directional focused waves. These waves as typical cases demonstrate the advantages of the wave basin generating multi-directional, multi-frequency waves and localized distorted waves. The results show that the fully nonlinear free-surface boundary conditions allow the wave basin to capture higher-order wave components during the propagation and deformation of stronger nonlinear waves. The annular artificial damping layer effectively absorbs wave energy from all directions, ensuring the stability of the simulation by mitigating spurious reflections. This fully nonlinear numerical wave basin overcomes the limitations of traditional wave tanks regarding wave direction angles.

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来源期刊

Engineering Analysis with Boundary Elements 工程技术-工程：综合

CiteScore

5.50

自引率

18.20%

发文量

368

审稿时长

56 days

期刊介绍： This journal is specifically dedicated to the dissemination of the latest developments of new engineering analysis techniques using boundary elements and other mesh reduction methods. Boundary element (BEM) and mesh reduction methods (MRM) are very active areas of research with the techniques being applied to solve increasingly complex problems. The journal stresses the importance of these applications as well as their computational aspects, reliability and robustness. The main criteria for publication will be the originality of the work being reported, its potential usefulness and applications of the methods to new fields. In addition to regular issues, the journal publishes a series of special issues dealing with specific areas of current research. The journal has, for many years, provided a channel of communication between academics and industrial researchers working in mesh reduction methods Fields Covered: • Boundary Element Methods (BEM) • Mesh Reduction Methods (MRM) • Meshless Methods • Integral Equations • Applications of BEM/MRM in Engineering • Numerical Methods related to BEM/MRM • Computational Techniques • Combination of Different Methods • Advanced Formulations.