摘要
磁流变液具有粘性和粘塑性流体特性。基于Navier-Stokes方程,分析了外加磁场对在两圆筒间隙间的磁流变液粘塑性流动的影响,得到了速度和流量表达式,为圆筒式磁流变器件的设计提供了理论依据。研究结果表明:速度沿磁场方向呈抛物线和直线分布;流量可由外加磁场连续调控。
Magnetorheological （MR） fluids have the properties ot both ViSCOSity and Viscoptasticity. Daseu on Navier-Stokes＇ equation,a theoretical analysis of the effect of the applied magnetic field on the viscoplastic flow in the gap between two cylinders is presented. The expressions for the velocity and the volumetric flow rate in viscoplastic flow are derived to provide a theoretical foundation for the design of cylindrical MR devices. The results indicate the velocity exhibits the distributions of both parabolic curve and straight line with the magnetic field direction. The volumetric flow rate can be continuously adjusted by an external magnetic field.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2006年第6期992-993,共2页
Journal of Functional Materials
基金
重庆市自然科学基金资助项目(2005BB4082)
关键词
磁流变液
粘塑性流动
速度分布
流最
MR fluid
viscoplastic flow
velocity distribution
volumetric flow rate
