Curvature dynamics and long-range effects on fluid–fluid interfaces with colloids

Tiribocchi, Adriano; Bonaccorso, Fabio; Lauricella, Marco; Melchionna, Simone; Montessori, Andrea; Succi, Sauro

doi:10.1039/c8sm02396d

Cited by 10 publications

(10 citation statements)

References 61 publications

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“…In this paper, particle motion and collision are simulated using the discrete element method. Lagrangian particle's motion follows Newton's second law in Equations ( 14) and (15). Particle translation is accelerated by hydrodynamic interaction force F f , particles collision force F c , and gravity force G every timestep.…”

Section: Discrete Element Methodsmentioning

confidence: 99%

“…Feng and Michaelides [12] combined IB and LBM to simulate the fluid-structure interaction (FSI) problem. IB-LBM was then extended to more FSI problems such as symmetric flapping wing movement simulation [13], deformable particles [14], and multicomponent flow spinodal decomposition [15]. However, IB discretized delta function interpolation can be inaccurate [16], and complicated simulations using IB can result in computational expense [6].…”

Section: Introductionmentioning

confidence: 99%

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Particle Flow Simulation Based on Hybrid IMB-DEM-LBM Approach with New Solid Fraction Calculation Scheme

2021

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A new coupling method, immersed moving boundary–discrete element method–lattice Boltzmann method (IMB-DEM-LBM), is proposed to simulate particle flow for application in soil mechanics or coastal engineering. In this study, LBM fluid is simulated on the regular Eulerian grid and Lagrangian particle motion is governed by DEM while IMB couples the two algorithms. The new method is promising and robust as it resolves numerical instability near the particle boundary caused by mesh distortion in the conventional grid method. In IMB, the interface lattice solid fraction determines the distribution function ratio of non-equilibrium bounce back and Bhatnagar-Gross-Krook (BGK) collision. The non-equilibrium bounce back at moving boundary results in the fluid momentum change and contributes to the hydrodynamic force on particle. For numerical stability, this paper introduces the hydrodynamic force calculation concept from IB (immersed boundary method) to IMB, and at the same time, proposes a new solid fraction calculation method for sphere that divides the intersection into simple sector and triangle, as well as calculates the intersection area by vector. With this method, approximate inaccuracy is overcome while complicated integration is avoided.

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Section: Discrete Element Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Particle Flow Simulation Based on Hybrid IMB-DEM-LBM Approach with New Solid Fraction Calculation Scheme

2021

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“…In the above, Ω k i (1) , stands for the standard collisional relaxation [33], Ω k i (2) is the perturbation step [35], which contributes to the buildup of the interfacial tension. Finally, Ω k i (3) is the recoloring step [35,38], which promotes the segregation between the two species, so as to minimise their mutual diffusion.…”

Section: Methodsmentioning

confidence: 99%

Modeling pattern formation in soft flowing crystals

et al. 2019

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We present a mesoscale representation of near-contact interactions between colliding droplets which permits to reach up to the scale of full microfluidic devices, where such droplets are produced. The method is demonstrated for the case of colliding droplets and the formation of soft flowing crystals in flow-focussing microfluidic devices. This model may open up the possibility of multiscale simulation of microfluidic devices for the production of new droplet/bubble-based mesoscale porous materials. * Electronic address: and.

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“…Incidentally, these simulations exhibit a rich variety of different patterns and configurations, typical of multi-component systems in the presence of amphiphilic groups or colloidal particles (i.e. bijels [38,15]). (a) (b) (c) Figure 4: (a-c) time sequence of the droplets diffusion of a dense emulsion in a periodic box.…”

Section: Short Range Repulsion Between Droplets In Close Contactmentioning

confidence: 99%

Multiparticle collision dynamics for fluid interfaces with near-contact interactions

Montessori

Lauricella

Tiribocchi

et al. 2020

The Journal of Chemical Physics

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We present an extension of the multiparticle collision dynamics method for flows with complex interfaces, including supramolecular near-contact interactions mimicking the effect of surfactants. The new method is demonstrated for the case of (i) short range repulsion of droplets in close contact, (ii) arrested phase separation and (iii) different pattern formation during spinodal decomposition of binary mixtures. * Electronic address: a.

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Curvature dynamics and long-range effects on fluid–fluid interfaces with colloids

Abstract: The fluid–fluid interface curvature can provide new insights into local inhomogeneities of a binary fluid mixture containing colloidal particles.

Cited by 10 publications

References 61 publications

Particle Flow Simulation Based on Hybrid IMB-DEM-LBM Approach with New Solid Fraction Calculation Scheme

Particle Flow Simulation Based on Hybrid IMB-DEM-LBM Approach with New Solid Fraction Calculation Scheme

Modeling pattern formation in soft flowing crystals

Multiparticle collision dynamics for fluid interfaces with near-contact interactions

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