Fluid lubrication effects on particle flow and transport in a channel

Tomac, Ingrid; Gutierrez, Marte

doi:10.1016/j.ijmultiphaseflow.2014.04.007

Cited by 47 publications

(13 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on this model, Tomac and Gutierrez [43,44] conducted DEM-CFD simulations with a contact model that considers the fluid lubrication effects between two approaching particles.…”

Section: Lubrication Forcementioning

confidence: 99%

“…The non-negligible influence of lubrication on particle collisions and therefore the employed contact model within the DEM has long been established [37][38][39][40][41][42][43][44]. For this reason, the lubrication force model described by Tomac and Guitierrez [44] was incorporated into the DEM. In addition, a model for the shear rate-dependent sliding friction coefficient [37,38] was included.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Investigation of Third‐Body Behavior in Dry and Wet Environments under Plane Shearing

et al. 2016

View full text Add to dashboard Cite

A coupled discrete element method and computational fluid dynamics (DEM-CFD) approach to model and assess third-body behavior in dry and wet environments under plane shearing is presented. DEM is used to model the granular media, while the fluid side of the system is simulated with CFD, which is based on the finite volume method. The applied model is extended to consider buoyancy as well as lubrication effects. The third body is confined and compressed between two walls, which are sheared in opposite direction with a constant velocity. The influence of different shear velocities, fluid viscosities, and gravity orientations on particle and fluid rheology is investigated. Obtained results of both dry and lubricated systems are compared regarding velocity and porosity distribution across the gap, sliding friction, and particle interaction.

show abstract

“…Based on this model, Tomac and Gutierrez [43,44] conducted DEM-CFD simulations with a contact model that considers the fluid lubrication effects between two approaching particles.…”

Section: Lubrication Forcementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Third‐Body Behavior in Dry and Wet Environments under Plane Shearing

et al. 2016

View full text Add to dashboard Cite

show abstract

“…According to the classical lubrication theory [36], the pressure distribution (P) inside of the liquid film between the bubble and spherical surface is:…”

Section: Effect Of Surfactant and Plastic Materials On Bubble Attachmementioning

confidence: 99%

Rebound and attachment involving single bubble and particle in the separation of plastics by froth flotation

Zhao

Huang

et al. 2015

Separation and Purification Technology

View full text Add to dashboard Cite

“…Dense particulate flows containing large numbers of solid particles [1][2][3][4][5] are common in industrial applications and biological environments, and lubrication plays a crucial role in the interparticle region for determining the global behavior and dissipation of the particulate flows, including jamming transition via a lubrication breakdown [6][7][8][9][10][11]. During the simulation of the flow in the interparticle region on a fixed Cartesian grid, the surface distance of the interparticle gap (and/or narrow particle-wall gap) becomes comparable to or smaller than the grid size, and the fluid flow in that region is often unresolved.…”

Section: Introductionmentioning

confidence: 99%

Extended Reynolds lubrication model for incompressible Newtonian fluid

Takeuchi

2019

Phys. Rev. Fluids

View full text Add to dashboard Cite

An extended lubrication model is proposed for improvement of the lubrication theory by taking into account a larger surface-to-surface distance than that for the Reynolds lubrication theory. The analysis shows that when considering the non-negligible pressure gradient in the surface-normal direction, the local pressure is separated into (i) a base component satisfying the Reynolds lubrication theory and (ii) an adjusting component varying in the surface-normal direction, which is found to take the form proportional to the longitudinal derivative of the local velocity of the Couette-Poiseuille flow. Comparison of the results obtained by analytical and numerical methods for the lubrication between a moving curved object and stationary object shows that the proposed lubrication model reproduces the pressure distribution in both wall-normal and longitudinal directions. In a problem of a spherical particle approaching to a plane wall, the hydrodynamic force calculated by the proposed model exhibits an inverse-proportional trend to the surface-tosurface distance. The results suggest extended applicability of the lubrication theory to a non-Reynolds regime.

show abstract

Fluid lubrication effects on particle flow and transport in a channel

Cited by 47 publications

References 28 publications

Numerical Investigation of Third‐Body Behavior in Dry and Wet Environments under Plane Shearing

Numerical Investigation of Third‐Body Behavior in Dry and Wet Environments under Plane Shearing

Rebound and attachment involving single bubble and particle in the separation of plastics by froth flotation

Extended Reynolds lubrication model for incompressible Newtonian fluid

Contact Info

Product

Resources

About