Suspension-colloidal flow accompanied by detachment of oversaturated and undersaturated fines in porous media

Chequer, Larissa; Bedrikovetsky, Pavel

doi:10.1016/j.ces.2018.12.033

Cited by 28 publications

(15 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to verify the accuracy and feasibility of the established porous media model, the migration process of particles in porous media in NaCl solutions with different ionic strengths was simulated in this section, and the results were compared with those of Pramod. 39,40 As shown in Figure 3, the computational domain size of porous media is 240 μm Â 100 μm. The left boundary and bounded boundary are set as inflow and outflow boundary conditions.…”

Section: The Model Verificationmentioning

confidence: 99%

Study on the effect of ionic strength on particle migration and deposition in porous media covered by biofilm based on coupled Lattice Boltzmann method and Discrete element method

Hong

Chen

Gong

et al. 2022

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

Biofilms covering porous media will interact with particles and affect particle migration. In order to investigate the migration mechanism of particles in porous media covered by biofilms, the migration process of particles with different particle sizes under the condition of the changing ionic strength is analyzed by using the lattice Boltzmann method–discrete element method (LBM‐DEM) coupling method from mesoscopic scale. The variation patterns of ion strength include gradient and mutation, respectively. Also, the agglomeration of particles at the pore throat in porous media is investigated under different conditions. The main results are obtained as follows. First, both the change of ionic strength and its changing mode significantly affect the migration behavior of particles in NaCl solution but have little effect on the behavior of particles in CaCl2 solution. Second, when the pressure difference between the pressure difference between the inlet and outlet of porous media is 0.4 kPa, the residual permeability of 1.5‐μm particles in the NaCl solution with ionic strength mutation is the highest, which has value of 64.92%. Third, at the specific flow rate, the particles in low ionic strength solution are more likely to be settled. The attraction of particles in the CaCl2 solution is one order of magnitude less than that in the NaCl solution, and the accumulated particles are more likely to be dispersed.

show abstract

Section: The Model Verificationmentioning

confidence: 99%

Study on the effect of ionic strength on particle migration and deposition in porous media covered by biofilm based on coupled Lattice Boltzmann method and Discrete element method

Hong

Chen

Gong

et al. 2022

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

show abstract

“…The phenomenological model describes the macroscopic filtration process by establishing a set of phenomenological equations and introducing a series of empirical coefficients experimentally determined. Many researchers have proposed the numerical solution of phenomenological model and analytic methods of the capturing coefficients under various mechanisms 2,7‐13 . However, these one‐dimensional approaches are essentially focused on the average particle concentration in porous media and cannot be used to explicitly characterize the distribution of particle concentration within the system.…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers have proposed the numerical solution of phenomenological model and analytic methods of the capturing coefficients under various mechanisms. 2,[7][8][9][10][11][12][13] However, these onedimensional approaches are essentially focused on the average particle concentration in porous media and cannot be used to explicitly characterize the distribution of particle concentration within the system.…”

Section: Introductionmentioning

confidence: 99%

A novel simulation approach for particulate flows during filtration

Moghanloo

et al. 2021

AIChE Journal

View full text Add to dashboard Cite

This paper presents a novel approach for simulation of filtration process when velocity gradient within pore space cannot be neglected. The new model is useful for accurate prediction of the filtration performance and particle retention efficiency. Artificial porous media such as filters, by design, have a large surface‐to‐volume ratio because of an inherent homogeneity present within their structure; the homogenous structure is realized due to organized packing of grains as building blocks, which leads to a significant velocity gradient inner pore space. In this work, the inner‐pore flow characteristics of two different homogeneous packing patterns (cubic and oblique hexagonal packing) were examined. The multiple constricted tubes analogy was adopted to model porous media to simplify the inner‐pore geometrical structure. A new integrated simulation approach was utilized through implementing the particle trajectory model to every unit bed element of the simulation domain. The accuracy of the numerical simulations used in this study was verified by comparing the particle distribution pattern and penetration depth obtained from simulations to those monitored via a visual experiment. A sensitivity analysis was carried out to study parameters that may affect the particle distribution and penetration length, such as grain‐to‐particle size ratio, flow rate, and fluid viscosity. The simulation method utilized in this paper provides an in‐depth understanding of the fine particle migration during filtration process through artificial porous media, and, thus, provide useful insights for improved filtration design.

show abstract

“…The transport of particles in porous media emerge in many problems of interest, such as spillage of contaminants in soils [1,2], water filtration systems [3], fines migration [4,5], enhanced oil recovery [6,7], to name a few. For enhanced oil recovery methods (EOR), injection particle diameter α, β constants of the Gumbel distribution l characteristic pore length η, σ constants of the bimodal fit m mixture probability λ dimensionless value of edge length p pressure µ viscosity of water t time ξ dimensionless pore throat diameter u velocity of water ρ mass density v velocity of particles τ stress tensor x, y spatial coordinates ϕ volumetric occupation of particles of nanoparticles along with water has shown to recover initially trapped oil [8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A pore-scale study of transport of inertial particles by water in porous media

Kokubun

Muntean

Radu

et al. 2019

Chemical Engineering Science

View full text Add to dashboard Cite

We study the transport of inertial particles in water flow in porous media. Our interest lies in understanding the accumulation of particles including the possibility of clogging. We propose that accumulation can be a result of hydrodynamic effects: the tortuous paths of the porous medium generate regions of dominating strain/vorticity, which favour the accumulation/dispersion of the inertial particles. Numerical simulations show that essentially two accumulation regimes are identified: for low and for high flow velocities. When particles accumulate in high-velocity regions, at the entrance of a pore throat, a clog is formed. The formation of a clog significantly modifies the flow, as the partial blockage of the pore causes a local redistribution of pressure. This redistribution can divert the upstream water flow into neighbouring pores. Moreover, we show that accumulation in high velocity regions occurs in heterogeneous media, but not in homogeneous media, where we refer to homogeneity with respect to the distribution of the pore throat diameters. *

show abstract

Suspension-colloidal flow accompanied by detachment of oversaturated and undersaturated fines in porous media

Cited by 28 publications

References 47 publications

Study on the effect of ionic strength on particle migration and deposition in porous media covered by biofilm based on coupled Lattice Boltzmann method and Discrete element method

Study on the effect of ionic strength on particle migration and deposition in porous media covered by biofilm based on coupled Lattice Boltzmann method and Discrete element method

A novel simulation approach for particulate flows during filtration

A pore-scale study of transport of inertial particles by water in porous media

Contact Info

Product

Resources

About