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Spreading of granular suspensions on a solid surface

Abstract : We examine the spreading of a suspension of non-Brownian spheres suspended in a Newtonian liquid on a solid substrate. We show that the spreading dynamics is well described by the classical Cox-Voinov law provided the value of the fluid viscosity that arises in the capillary number of the problem is adjusted to a value that depends on particle size and volume fraction in a nontrivial way. We demonstrate that this behavior is a signature of the ability of the particles to approach the contact line close enough to affect dissipation.
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Submitted on : Monday, November 23, 2020 - 4:32:48 PM
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Menghua Zhao, Mathieu Oléron, Alice Pelosse, Laurent Limat, Elisabeth Guazzelli, et al.. Spreading of granular suspensions on a solid surface. Physical Review Research, American Physical Society, 2020, 2, pp.022031(R). ⟨10.1103/PhysRevResearch.2.022031⟩. ⟨hal-02492669⟩



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