円管電極内を流れる混合液晶の圧力降下(S23-4 複雑流体の流れとその応用(4),S23 複雑流体の流れとその応用)

概要

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A circular pipe electrode are designed to control the pressure and the flow rate of the ER (Erectro-rheological) fluids. The shape of the electrode is a circular pipe and the some parts of inner surface in the pipe are the electrode. A liquid crystal mixture is selected as a homogeneous ER fluids and the pressure drop of the circular pipe electrode is measured for a constant flow rates. On the other hands, numerical analysis of the electric fields in the circular pipe electrode is conducted and the relations between the flow rate and the pressure are obtained numerically for various electric field intensities, which almost agree with experimental results. In the present numerical analysis, it is assumed that the viscosity of liquid crystal mixture is distributed in the flow field. The ER effect of a circular pipe electrode is discussed from the present calculated results.
2004-09-04