Dynamic responses of electrorheological fluid in steady pressure flow

Dynamic responses of electrorheological fluid in steady pressure flow The dynamic responses of the electrorheological fluid in steady pressure flow to stepwise electric fields are investigated experimentally. First of all, the transient responses of the ER fluid under various electric field strengths and flow velocities are obtained from the pressure behaviors in the flow channel with two parallel-plate electrodes. The response times are exponentially decreased with the increase of the flow velocity and the decrease of the electric field strength. Next, the relationship between the dynamic pressure behaviors of the ER fluid and the cluster structure formation processes of the ER particles is investigated using the flow visualization technique. Through the comparison study, it is verified that the dynamic responses of the ER fluid in the flow mode are mainly caused by the cluster densification process in the competition of the electric field-induced particle attraction and the hydrodynamic force, unlike those in the shear mode determined by the particle aggregation process. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

Dynamic responses of electrorheological fluid in steady pressure flow

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Copyright © 2007 by Springer-Verlag
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
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