Numerical Study of Interaction of Focused Waves with a Fixed Cylinder by a Hybrid Model Coupling SPH and QALE-FEM
Numerical Study of Interaction of Focused Waves with a Fixed Cylinder by a Hybrid Model Coupling SPH and QALE-FEM
复制标题
SPH 与 QALE-FEM 混合模型耦合聚焦波与固定圆柱相互作用的数值研究
DOI：
10.17736/ijope.2021.jc813
复制
发表时间：
2021
影响因子：
0.8
通讯作者：
马庆位
中科院分区：
文献类型：
--
作者：
张宁波;严世强;郑兴;许国春;马庆位
圆柱体结构是海岸和近海工程中常见的设施类型。因此，研究波浪与运动圆柱体结构的相互作用具有重要意义。本文采用基于光滑粒子流体力学(SPH)和准任意朗格-欧拉有限元方法(QALEFE)的三维混合模型，研究了聚焦波与固定和运动柱体的相互作用。该混合模型利用上述两种方法各自的优点，在模拟聚焦波与圆柱相互作用方面具有较高的精度和效率优势。在该混合模型中，聚焦波与圆柱体的近场相互作用采用SPH方法，SPH边界的波浪产生采用QALE-有限元方法。为了了解数值模型的真实预报能力，用一组实验数据对模拟结果进行了验证，包括兴波运动、圆柱体附近的波浪高程和圆柱体上的波浪压力。
Cylinder structures are the common types of installations in coastal and offshore engineering. Thus it is of high importance to study the wave interaction with moving cylinder structures. In this paper, a 3-D hybrid model based on the smoothed particle hydrodynamics (SPH) and the Quasi Arbitrary Langangian-Eulerian Finite Element Method (QALEFEM) is used to study the interaction of focused waves with fixed and moving cylinder. The hybrid model has advantages in simulating the focused waves and cylinder interactions in terms of accuracy and efficiency by making use of respective advantage of the abovementioned two methods. In this hybrid model, the SPH method is used in the near-field interaction between the focused waves and cylinder and the QALE-FEM method is adopted for the wave generation at the SPH boundaries. In order to understand the true predictive capability of the numerical model, the simulation results are validated against with a set of experimental data, including the wavemaker motion, wave elevations near the cylinder and wave pressure on the cylinder.