利用 δ-LES-SPH 模型对孤波-结构相互作用问题进行多维建模

IF 4.2 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Engineering Analysis with Boundary Elements Pub Date : 2024-09-25 DOI:10.1016/j.enganabound.2024.105965

Tihan Fu , Dianlei Feng , Jifu Yin , Can Yi , Jianyu Chen

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引用次数: 0

摘要

波浪与海洋结构之间的相互作用机制是一个热门研究课题。本文采用弱可压缩平滑粒子流体力学（WCSPH）方法研究绿水倾覆动力学。为了提高模拟的准确性，采用了 SPH 方法与大涡流模拟（LES）模型相结合进行数值研究。首先，我们通过模拟孤波和不规则波的产生来验证模型的有效性，并在数值上再现了孤波与甲板相互作用时的水面形态。随后，我们利用经过验证的模型研究了不同类型波浪倾覆时的动态特征，发现了其运动的显著变化。此外，我们还从突起物的范围和分布两方面研究了整个绿水倾覆过程中甲板粗糙度的影响，证实合理设置突起物可大大降低波浪对甲板的冲击载荷，从而保护结构。此外，我们还建立了一个三维模型来研究绿水问题，我们发现在三维场景下湍流现象更加明显。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Multi-dimensional modeling of solitary wave–structure interaction problems by using a δ-LES-SPH model

The interaction mechanisms between waves and marine structures are a popular research topic. This paper applies the weakly compressible smoothed particle hydrodynamics (WCSPH) method to study the dynamics of green water overtopping. To enhance the accuracy of the simulations, the SPH method coupled with the large eddy simulation (LES) model is employed for numerical investigations. Initially, we validate the effectiveness of the model by simulating the generation of solitary waves and irregular waves, as well as numerically reproducing the water surface morphology during the interaction between solitary waves and the deck. Subsequently, the validated model is used to study the dynamic characteristics of different types of waves overtopping, revealing significant variations in their motion. Furthermore, we investigate the effect of deck roughness during the entire green water overtopping process in terms of both protrusions extent and distribution, confirming that a reasonable setting of the protrusions can greatly reduce the wave impact loads on the deck, thereby protecting the structure. Additionally, a three-dimensional model is developed to study the green water problem, and we find that the turbulence phenomenon is more pronounced in the three-dimensional scenario.

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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.