Simulation Studies on Structure-Force Dynamic Coupling of Electrorheological Fluids in a Poiseuille Flow Field

被引：3

作者：

Zhu Shisha ^{[1
]}

Tang Bin ^{[1
]}

Qu Lijuan ^{[1
]}

Yuan Wei ^{[1
]}

Zhang Quanfu ^{[1
]}

机构：

[1] Xiangtan Univ, Inst Engn Mech, Xiangtan, Peoples R China

来源：

MANUFACTURING SCIENCE AND MATERIALS ENGINEERING, PTS 1 AND 2 | 2012年 / 443-444卷

关键词：

ER fluids; poiseuille flow field; capture effect; structure-force dynamic coupling;

D O I：

10.4028/www.scientific.net/AMR.443-444.796

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Based on the modified Maxwell-Wagner model, the molecular dynamics method is applied to simulate the three-dimensional structural changes of the electrorheological (ER) fluids in an electric field and a poiseuille flow field. And it is analyzed that the structure-force dynamic coupling is characterized significantly by capture effect. The simulation results show that: when the electric field is applied, a chain network will capture the upstream particles in the flow field causing the local electric field force changed. Eventually a body-centered tetrahedron (BCT) is formed, and the structure-force dynamic coupling characterizes significantly. For an ER fluids in a electric field, there exist a threshold of pressure gradient. Its significance of structure-force dynamic coupling is related to electric field intensity, pressure gradient or flow velocity.

引用

页码：796 / 801

页数：6

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