Work

Structure and flow conditions through a colloidal packed bed formed under flow and confinement

Year: 2022

Type: article

Abstract: , the pore narrowing up to its complete obstruction, this paper focuses on the accumulation of particles that follows pore obstruction. We determine the relative contribution of the confinement dimensions, the ionic strength and the flow conditions on the permeability and particle volume fraction of the resultant accumulation. In high confinement the irreversible deposition of particles on the channel surfaces controls the structure of the accumulation and the flow through it, irrespective of the other conditions, leading to a Darcy flow. Finally, we show that contrarily to the clog head, in which there is cohesion between particles, those in the subsequent accumulation are held together by the fluid and form a dense suspension of repulsive hard spheres.

Source: Soft Matter

DOI: 10.1039/d2sm00419d

Authors: N. Delouche, B. Dersoir, A. B. Schofield, H. Tabuteau

Institutions: Centre National de la Recherche Scientifique, Institut de Physique de Rennes, Université de Rennes, University of Edinburgh

Language: English

Topic: Particle Dynamics in Fluid Flows

Subfield: Ocean Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: Agence Nationale de la Recherche, Centre National d’Etudes Spatiales

Award: Clogging of porous media: from the colloidal particle to the clog