Phys. Rev. Lett. 101, 194503 (2008) [4 pages]Electrorheological Fluid DynamicsReceived 11 June 2008; published 5 November 2008 We use the Onsager principle to derive a two-phase continuum formulation for the hydrodynamics of the electrorheological (ER) fluid, consisting of dielectric microspheres dispersed in an insulating liquid. Predictions of the theory are in excellent agreement with the experiments. In particular, it is shown that whereas the usual configuration of applied electric field being perpendicular to the shearing direction can lead to shear thinning at high shear rates and thus the loss of ER effect, the interdigitated, alternating electrodes configuration can eliminate the shear-thinning effect. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.194503
DOI:
10.1103/PhysRevLett.101.194503
PACS:
47.65.Gx, 47.50.−d, 83.50.Ax, 83.80.Gv
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.