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- W4288411768 abstract "We prove a local variant of Einstein's formula for the effective viscosity of dilute suspensions, that is $mu^prime=mu (1+frac 5 2phi+o(phi))$, where $phi$ is the volume fraction of the suspended particles. Up to now rigorous justifications have only been obtained for dissipation functionals of the flow field. We prove that the formula holds on the level of the Stokes equation (with variable viscosity). We consider a regime where the number $N$ of particles suspended in the fluid goes to infinity while their size $R$ and the volume fraction $phi=NR^3$ approach zero. We establish $L^infty$ and $L^p$ estimates for the difference of the microscopic solution to the solution of the homogenized equation. Here we assume that the particles are contained in a bounded region and are well separated in the sense that the minimal distance is comparable to the average one. The main tools for the proof are a dipole approximation of the flow field of the suspension together with the so-called method of reflections and a coarse graining of the volume density." @default.
- W4288411768 created "2022-07-29" @default.
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- W4288411768 date "2019-03-20" @default.
- W4288411768 modified "2023-10-16" @default.
- W4288411768 title "A local version of Einstein's formula for the effective viscosity of suspensions" @default.
- W4288411768 doi "https://doi.org/10.48550/arxiv.1903.08554" @default.
- W4288411768 hasPublicationYear "2019" @default.
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