Eur. Phys. J. E 5, 481-483 (2001)

Column size effects of DER fluids

T. Zhao and H.R. Ma

Institute of Theoretical Physics, Shanghai Jiao Tong University, Shanghai, 200240, PR China

hrma@hrma.sjtu.edu.cn

(Received 29 January 2001 and Received in final form 30 April 2001)

Abstract
The static yield stress of dielectric electrorheological (DER) fluids of infinite column state and chain state are calculated from the first principle method. The results indicate that the column surface contributions to ER effects is very small and both states will give correct results to the real DER fluids.

PACS
83.80.Gv - Electro- and magnetorheological fluids.
83.60.La - Viscoplasticity; yield stress.
41.20.Cv - Electrostatics; Poisson and Laplace equations, boundary-value problems.


© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2001