基于MPS-NDEM耦合模型的冰水相互作用问题研究

IF 4.2 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Engineering Analysis with Boundary Elements Pub Date : 2024-12-02 DOI:10.1016/j.enganabound.2024.106055

Biye Yang, Jinxin Wu, Zhe Sun, Borui Yang, Guiyong Zhang

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引用次数: 0

摘要

冰-水耦合是一种独特的流-固相互作用问题，以多体之间的碰撞和水动力相互作用为特征，伴随着自由表面的显著变化。本文提出了一种新的数值模型，实现了运动粒子半隐式（MPS）法和非光滑离散元法（NDEM）之间的双向耦合来模拟冰-水相互作用。采用MPS方法模拟流体运动，采用NDEM方法模拟浮冰的运动和碰撞。本文提出的改进的MPS方法，在我们以往研究的基础上，解决了传统MPS方法存在的几个问题。为了提高计算效率，采用区域分解方法并行求解流体求解器，并选择AMG预处理GMRES迭代求解器作为改进MPS方法的最优解方案。通过溃坝、波浪运动、规则波冰运动和碎屑溃坝流等基准案例，验证了该耦合模型的准确性和可行性。利用该耦合模型成功地进行了船舶在破冰区运动的模拟，并研究了冰水耦合载荷对预测破冰阻力的影响。

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Study on the ice-water interaction problem based on MPS-NDEM coupling model

Ice-water coupling is a unique fluid-solid interaction problem characterized by collisions and hydrodynamic interaction between multiple bodies, accompanied by significant changes in the free surface. This paper presents a novel numerical model that achieves two-way coupling between the moving particle semi-implicit (MPS) method and the non-smooth discrete element method (NDEM) to simulate ice-water interactions. The MPS method is employed to model fluid motion, while the NDEM is applied to simulate the motion and collision of ice floes. The improved MPS method presented in this study, based on our previous research, addresses several issues found in the traditional MPS method. To improve the computational efficiency, the domain decomposition method is implemented to parallel the fluid solver and the AMG preconditioned GMRES iterative solver is selected as the optimal solution scheme for the improved MPS method. The accuracy and feasibility of the present coupling model are validated through benchmark cases, such as dam break, wave motion, ice motion in regular waves and debris dam break flow. Furthermore, the simulation of the ship moving in the broken ice field is successfully conducted with the coupling model and the influence of ice-water coupling load on predicting broken ice resistance is also investigated.

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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.