Viscous resuspension of non-Brownian particles: determination of the concentration profiles and particle normal stresses

Abstract : We perform local measurements of both the shear rate and the particle fraction to study viscous resuspension in non-Brownian suspensions. A suspension of PMMA spherical particles dispersed in a lighter Newtonian fluid (Triton X100) is sheared in a vertical Couette cell. The vertical profiles of the particle volume fraction are measured for Shields numbers ranging from 10 −3 to 1, and the variation in the particle normal stress in the vorticity direction of the particle fraction is deduced.
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https://hal.archives-ouvertes.fr/hal-02163489
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Submitted on : Monday, July 1, 2019 - 2:57:16 PM
Last modification on : Thursday, July 4, 2019 - 5:29:47 AM

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  • HAL Id : hal-02163489, version 1
  • ARXIV : 1907.01793

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Enzo d'Ambrosio, Frédéric Blanc, Elisabeth Lemaire. Viscous resuspension of non-Brownian particles: determination of the concentration profiles and particle normal stresses. 2019. ⟨hal-02163489⟩

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