...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of the Chinese Society of Mechanical Engineers, Series C: Transactions of the Chinese Society of Mechanical Engineers >A 2D Spectral-Element Simulation Tool For Rigid-Body Motion in Viscous Incompressible Flow
【24h】

A 2D Spectral-Element Simulation Tool For Rigid-Body Motion in Viscous Incompressible Flow

机译：用于粘性不可压缩流中刚体运动的二维频谱元素仿真工具

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

We propose a simulation method for solving fluid-structure-interaction problems. In this method, the entire fluid-solid system is treated as an incompressible fluid with non-uniform density and the no-slip boundary condition at the rigid body surface is enforced by the penalization method, namely by adding a penalization force to the momentum equations in the solid region. The penalized equations are first discretized by a mixed explicit/implicit scheme in time and the spectral element method in space and then solved by a fractional step algorithm. In order to reduce the numerical instability, the flow density and the velocity are smoothed at the fluid-solid interface by using either a smoothing function or a momentum-conserved sub-cell method. The accuracy and validity of the solver are verified by comparing the simulation results of the sedimentation of a circular cylinder in a channel with data in literature. Important numerical parameters involved in this method are investigated thoroughly as well.
机译：我们提出一种模拟方法来解决流固耦合问题。在这种方法中，整个流体-固体系统被视为密度不均匀的不可压缩流体，并且通过罚分法（即通过向动量方程添加罚分力）来强制刚体表面的防滑边界条件。在固体区域。首先通过时间上的混合显式/隐式格式和空间中的频谱元素方法离散化惩罚方程，然后通过分数步长算法求解。为了减少数值不稳定性，可通过使用平滑函数或动量守恒子单元方法在流固界面处对流密度和速度进行平滑处理。通过将通道中圆柱体沉降的模拟结果与文献数据进行比较，验证了求解器的准确性和有效性。还彻底研究了此方法中涉及的重要数值参数。

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