Numerical Analysis of Behavior of High-Viscosity Electromagnetic Fluid Using a Coupled Method of Particle Method and FEM
Numerical Analysis of Behavior of High-Viscosity Electromagnetic Fluid Using a Coupled Method of Particle Method and FEM
复制标题
使用粒子法和有限元耦合方法对高粘度电磁流体行为进行数值分析
DOI：
10.1109/tmag.2015.2497695
复制
发表时间：
2016
影响因子：
2.1
通讯作者：
Katsuhiro Hirata
中科院分区：
文献类型：
--
作者：
Takeshi Yamamoto;Shuhei Matsuzawa;Sinnosuke Ogawa;Tomohiro Ota;Katsuhiro Hirata
电磁流体通常是载流中极细金属颗粒的悬浮液，在电磁场作用下表现出较大的变形或材料性质的变化等独特行为。本文研究了超高粘度电磁流体在静电场中的伸长和锐化问题。这一特性由于包含了剧烈的变形和流体界面的大变化，很难用有限元模型来计算。为此，提出了一种改进的有限元与运动粒子半隐式（MPS）三维耦合方法。用有限元法分析静电场和用MPS法分析流体是弱耦合的。本文隐式计算了Navier-Stokes方程中的粘性项，成功地精确计算了高粘度电磁流体的变形。
Electromagnetic fluid, which is usually a suspension of extremely fine particles of metal in carrier fluid, shows unique behaviors such as large deformation or a change of material properties in electromagnetic field. This paper deals with elongation and sharpening of electromagnetic fluid with extremely high viscosity in electrostatic field. This behavior is very difficult to calculate with the finite-element model (FEM) because it includes intensive deformation and a large change of interfacial surface of fluid. Therefore, we propose an improved 3-D coupled method of FEM and moving particle semi-implicit (MPS). Electrostatic field analysis with the FEM and fluid analysis with MPS is weakly coupled. This paper implicitly calculates viscous terms in Navier-Stokes equations and succeeds in accurately calculating deformation of high-viscosity electromagnetic fluid.