Corrector equations in fluid mechanics: Effective viscosity of colloidal suspensions
arXiv:1909.09625 · doi:10.1007/s00205-020-01589-1
Abstract
Consider a colloidal suspension of rigid particles in a steady Stokes flow. In a celebrated work, Einstein argued that in the regime of dilute particles the system behaves at leading order like a Stokes fluid with some explicit effective viscosity. In the present contribution, we rigorously define a notion of effective viscosity, regardless of the dilute regime assumption. More precisely, we establish a homogenization result when particles are distributed according to a given stationary and ergodic random point process. The main novelty is the introduction and analysis of suitable corrector equations.
arXiv comment30 pages
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