Migration trajectories and blocking effect of the fine particles

What is it about?

PFC (particle flow code) method based on discrete element method was used to establish the seepage migration model of fine particles (FPs, i.e., suspended particles) in a porous medium. A series of numerical simulations were carried out by changing the particle size, seepage velocity, particle injection number, as well as the wide particle size gradation.

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Photo by Sime Basioli on Unsplash

Photo by Sime Basioli on Unsplash

Why is it important?

In this paper, particle flow code method is used to simulate the migration and deposition characteristics of fine particles in porous media under seepage, and the effects of particle size, concentration, seepage velocity and particle size inhomogeneity of fine particles are considered. Then, the distribution characteristics of fine particles at different depths are quantitatively analysed to track the migration trajectory of fine particles. Finally, the blockage mechanism caused by the deposition of mixed particle size particles and the detachment effect of deposited particles are obtained.

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