...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean Engineering >Numerical study on the water impact of 3D bodies by an explicit finite element method
【24h】

Numerical study on the water impact of 3D bodies by an explicit finite element method

机译：显式有限元法对3D物体水冲击的数值研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The hydrodynamic problem of the water impact of three-dimensional buoys is investigated by the explicit finite element method with an Arbitrary-Lagrangian Eulerian (ALE) solver. The fluid is solved by using an Eulerian formulation, while the structure is discretized by a Lagrangian approach, and a penalty coupling algorithm enables the interaction between the body and the fluids. The remap step in the ALE algorithm applies a donor cell ＋ HIS (Half-Index-Shift) advection algorithm to update fluid velocity and history variables. The interface between the solid structure and the fluids is captured by Volume of Fluid method. Convergence studies are carried out for three dimensional hemisphere and cones with different deadrise angles. It is found that the mesh density of the impact domain is very important to the quality of the simulation results. The contact stiffness between the coupling nodes affects the local peak pressure values. The numerical calculations are validated by comparing with other available results, for both the drop cases and the ones with constant impact velocity.
机译：利用任意拉格朗日欧拉（ALE）求解器，通过显式有限元方法研究了三维浮标对水的冲击的水动力问题。通过使用欧拉公式来求解流体，而通过拉格朗日方法离散化结构，并且罚耦合算法实现了人体与流体之间的相互作用。 ALE算法中的重映射步骤应用了施主单元+ HIS（半索引平移）对流算法来更新流体速度和历史变量。固体结构和流体之间的界面是通过“流体体积”方法捕获的。对三维半球和具有不同死角的圆锥进行了收敛研究。发现冲击域的网格密度对于仿真结果的质量非常重要。耦合节点之间的接触刚度会影响局部峰值压力值。通过与跌落情况以及具有恒定冲击速度的情况进行比较，可以通过与其他可用结果进行比较来验证数值计算。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号