The transition to irreversibility in sheared suspensions: An analysis based on a mesoscopic entropy production

Abstract

We study the shear-induced diffusion effect and the transition to irreversibility in suspensions under oscillatory shear flow by performing an analysis of the entropy production associated to the motion of the particles. We show that the Onsager coupling between different contributions to the entropy production is responsible for the scaling of the mean square displacement on particle diameter and applied strain. We also show that the shear-induced effective diffusion coefficient depends on the volume fraction and use Lattice-Boltzmann simulations to characterize the effect through the power spectrum of particle positions for different Reynolds numbers and volume fractions. Our study gives a thermodynamic explanation of the the transition to irreversibility through a pertinent analysis of the second law of thermodynamics.

17 pages, 3 figures, paper submitted tp phys rev e

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Cited by in corpus (3)

• Hydrodynamic Irreversibility in Particle Suspensions with Non-Uniform Strain
• Pattern formation from consistent dynamical closures of uniaxial nematic liquid crystals
• Mesoscopic non-equilibrium thermodynamics approach to non-Debye dielectric relaxation