Structure of an electrorheological fluid in steady shear

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States)

DOI:https://doi.org/10.1103/PhysRevE.50.3263· OSTI ID:6908357

Martin, J E; Odinek, J ^[1]; Halsey, T C ^[2]

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1. Advanced Materials Physics Division, Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)
2. The James Franck Institute and Department of Physics, The University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 (United States)

We report a real-time, two-dimensional light scattering study of the structure of an electrorheological fluid under steady shear. When an electric field is applied to the quiescent fluid, particles chain along the electric field lines and cause strong light scattering lobes to appear at a finite scattering wave vector [ital q] orthogonal to the field lines. We find that when the sample is subjected to steady shear a steady state scattering pattern emerges with lobes that are rotated in the direction of fluid vorticity. The angle of rotation is found to increase as the cube root of the shear rate, in agreement with a theoretical prediction of the steady state structure of fragmenting particle droplets.

• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6908357
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States), Journal Name: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States) Vol. 50:4; ISSN 1063-651X; ISSN PLEEE8
• Country of Publication: United States
• Language: English

Related Subjects

665000* -- Physics of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DISPERSIONS
ELECTRIC FIELDS
FLUID FLOW
LIGHT SCATTERING
MOTION
RHEOLOGY
ROTATION
SCATTERING
SHEAR
SUSPENSIONS
VISCOUS FLOW
VORTICES