Stability analysis of a particle band on the fluid–fluid interface

Hooshanginejad, Alireza; Druecke, Benjamin; Lee, Sungyon

doi:10.1017/jfm.2019.239

Cited by 13 publications

(7 citation statements)

References 15 publications

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“…In addition to allowing measurements of otherwise inaccessible quantities in the mono-disperse case, our 3-D tracking method has the advantage of convenient extension to the case of bi-disperse or poly-disperse suspensions, as particle size can be determined easily during the optical reconstruction. Owing to the presence of the channel walls, which prevent particle overlap, the present experimental findings are also relevant to natural problems involving particle suspension in high confinement, such as thin films (Hooshanginejad, Druecke & Lee 2019) or porous media (Mirbod & Shapley 2023). Furthermore, as a consequence of the standard manufacturing methods, duct-like channels are extremely common in microfluidics.…”

Section: Discussionmentioning

confidence: 87%

Hydrodynamic irreversibility of non-Brownian suspensions in highly confined duct flow

Antolik,

Howard,

Vereda

et al. 2023

J. Fluid Mech.

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The irreversible behaviour of a highly confined non-Brownian suspension of spherical particles at low Reynolds number in a Newtonian fluid is studied experimentally and numerically. In the experiment, the suspension is confined in a thin rectangular channel that prevents complete particle overlap in the narrow dimension and is subjected to an oscillatory pressure-driven flow. In the small cross-sectional dimension, particles rapidly separate to the walls, whereas in the large dimension, features reminiscent of shear-induced migration in bulk suspensions are recovered. Furthermore, as a consequence of the channel geometry and the development and application of a single-camera particle tracking method, three-dimensional particle trajectories are obtained that allow us to directly associate relative particle proximity with the observed migration. Companion simulations of a steadily flowing suspension highly confined between parallel plates are conducted using the force coupling method, which also show rapid migration to the walls as well as other salient features observed in the experiment. While we consider relatively low volume fractions compared to most prior work in the area, we nevertheless observe significant and rapid migration, which we attribute to the high degree of confinement.

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Section: Discussionmentioning

confidence: 87%

Hydrodynamic irreversibility of non-Brownian suspensions in highly confined duct flow

Antolik,

Howard,

Vereda

et al. 2023

J. Fluid Mech.

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“…It causes certain fingering characteristics according to granular properties. Particle phase viscosity arises due to friction between particles and has been used to explain the formation of fingerings when granular particles are deposited in a liquid [4,6,18].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The granular fluid interaction produces a concentration. Low viscosity suspensions replace high concentration, and high viscosity suspensions and are unstable because of the instability mechanism [4]. The instability in interactions between fluids can develop in several forms [5].…”

Section: Introductionmentioning

confidence: 99%

An investigation of granular material movement due to instability post impinging upward fluid

Yudiyanto

Wardana

Widhiyanuriyawan

et al. 2020

EEJET

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Granular is a form of material that is widely used in the industry. To move the granular material, energy is needed to form a flow of granular. Granular instability can be utilized to move granular material. Prevention of jamming and clogging is done by breaking down the parts of the granular, which are locking. Impinging fluid in the granular is used to create granular instability. An observation was made using the experimental method. The granular in the Hele-Shaw cell is shot with fluid in the granular body and results in instability motion. Fluid impinging breaks granular bonds and forms fluid cavities. Furthermore, the fluid cavity moves upward due to unstable conditions. Granular with a strong bond is loose in the form of the agglomerate. Agglomerate is destroyed in the process of moving because there is a drag force. Granular with weak bonds tries to maintain individually form fingering. Granular moves down in the settling process to find a stable position. Instability is affected by the bonds between the grains. A comparison between the cohesion force and the mass weight of the particles is expressed as a granular Bond number B og. In glass sand material, strong granular bonds occur at granular sizes below 100 µm. Granular bonds affect the movement of instability in groups. The value of the granular Bond number is greater than 1. At sizes of 100 to 230 µm, the granular bond still affects the granular instability with the fingering pattern in the granular motion. The value of the granular Bond number is close to 1. Granular sizes above 230 µm indicate the presence of non-dominant bonds between the grains. The individual granular mass is higher than the cohesion force that occurs at the interface between the granular, and the granular Bond number value is less than 1

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“…(2016) experimentally characterised fingering patterns for varying particle volume fractions. They also successfully validated the effects of shear-induced migration that leads to the accumulation of particles on the advancing oil–air interface, which was followed by the exploration of the role of channel confinement (Kim, Xu & Lee 2017) and linear stability analysis to predict the critical wavenumber (Hooshanginejad, Druecke & Lee 2019).…”

Section: Introductionmentioning

confidence: 98%