Abstract
Pore space colmatation during the bimodal suspension flow through the porous medium
Highlights
The particles are retained in the pore space and, as a consequence, the porosity and permeability of the medium decrease when the suspension moves through the porous medium
The particles do not penetrate inside, but settle on the surface of the porous medium, forming an external filtration crust with low permeability if the characteristic particle size is larger than the characteristic size of the pore «necks»
The penetration of particles into the porous medium takes place, which is accompanied by the retention of part of the particles in the pore space if the characteristic particle size is smaller than the characteristic size of the pore constrictions
Summary
Pore space colmatation during the bimodal suspension flow through the porous medium. The problem of filtration of bimodal suspension through a porous medium is considered in the work. The model based on the laws of mass conservation for particles and for liquid is investigated, as well as local laws of particle capture described by kinetic equations. This model allows to take into account the differences in the physical properties of the particles (for example, their size) unlike the known model for the same type of particles The model takes into account the possibility of remobilization of captured particles.
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