Direct meso-scale simulations of fibres in turbulent liquid flow
Direct meso-scale simulations of fibres in turbulent liquid flow
复制标题
湍流液体流动中纤维的直接细观模拟
DOI：
10.1002/cjce.20303
复制
发表时间：
2010
影响因子：
2.1
通讯作者：
J. Derksen
中科院分区：
文献类型：
--
作者：
J. Derksen
介绍了一种对浸没在液体流中的柔性纤维进行直接、细观尺度模拟的程序。纤维由通过球形接头连接的球形颗粒链组成，接头的弯曲刚度作为变量。纤维和液体的运动是双向耦合的，具有固液界面的全分辨率。首先，通过零雷诺简单剪切流中球体双峰的解析解来验证模拟过程。随后，我们使用数值方法研究纤维的惯性流，更具体地说是纤维与各向同性湍流的相互作用。
A procedure for direct, meso-scale simulations of flexible fibres immersed in liquid flow is introduced. The fibres are composed of chains of spherical particles connected through ball joints with the bending stiffness of the joints as a variable. The motion of the fibres and the liquid is two-way coupled with full resolution of the solid-liquid interface. First the simulation procedure is validated by means of an analytical solution for sphere doublets in zero-Reynolds simple shear flow. Subsequently we use the numerical method to study inertial flows with fibres, more specifically the interaction of a fibre with isotropic turbulence.