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Shear-rate-dependent structural order and viscosity of a fluid with short-range attractions

William P. Krekelberg, Venkat Ganesan, and Thomas M. Truskett
Phys. Rev. E 78, 010201(R) – Published 28 July 2008

Abstract

We study a model short-range attractive fluid under shear. For this system, the strength of interparticle attractions strongly influences the equilibrium structural order. We find that shear monotonically decreases structural order regardless of the strength of the attractions. There is a strong correlation between shear-rate-dependent viscosity and a structural order metric, suggesting a structurally based constitutive equation. This correlation also holds for the Lennard-Jones fluid.

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  • Received 12 May 2008

DOI:https://doi.org/10.1103/PhysRevE.78.010201

©2008 American Physical Society

Authors & Affiliations

William P. Krekelberg1, Venkat Ganesan1,2, and Thomas M. Truskett1,2,*

  • 1Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, USA
  • 2Institute for Theoretical Chemistry, University of Texas at Austin, Austin, Texas 78712, USA

  • *Corresponding author. truskett@che.utexas.edu

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Vol. 78, Iss. 1 — July 2008

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