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A Novel Method for Dynamic Simulation of Flexible Fibers in a 3D Swirling Flow

机译:在3D旋流中动态模拟柔性纤维的新方法

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摘要

A novel method is proposed for simulating the motion of flexible fibers in a 3D swirling flow, where the fiber is modeled as a chain of beads connected through mass-less rods. The bending and twisting displacements of the successive beads are used to represent the deformation of the fiber. In addition, the drag and shear-induced lift forces are considered in the proposed model as parts of external loads acting on the fiber in the swirling flow. In the numerical simulation, the spiral motion trajectory of the fiber is observed to have a springy or helical configuration. The numerical results are validated by experimental visualization using high-speed photography.
机译:提出了一种新颖的方法来模拟3D旋流中柔性纤维的运动,其中将纤维建模为通过无质量杆连接的珠链。连续珠的弯曲和扭曲位移用于表示纤维的变形。另外,在所提出的模型中,阻力和剪切引起的升力被认为是在涡流中作用在纤维上的外部载荷的一部分。在数值模拟中,观察到纤维的螺旋运动轨迹具有弹性或螺旋形构型。数值结果通过使用高速摄影的实验可视化进行了验证。

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