Abstract
The electrorehorogical (ER) effect is known as a phenomenon that shows reversible increase of apparent viscosity by applied electric field. The electric field induces the particle polarization, resulting in the chains between the electrodes.
In this study, the ER fluids in the channel with two parallel electrodes were visualized under the pressure flow and the constant flow rate. The laser light sheet and transparent electrodes were used in the experimental apparatus to visualize the particles under lOwt% concentration. The particle chain structure in the channel was clearly visualized. Under higher voltage condition, particle layers were formed at the neighbor of the electrodes. The layer gradually becomes thick, at last it is destroied. By compareing the visualized image and the mass flow rate, the relation between the layer and the mass flow rate were investigated.
