# A lattice Boltzmann study of particle settling in a fluctuating multicomponent fluid under confinement

@article{Xue2019ALB, title={A lattice Boltzmann study of particle settling in a fluctuating multicomponent fluid under confinement}, author={Xiao Xue and Luca Biferale and Mauro Sbragaglia and Federico Toschi}, journal={The European Physical Journal. E, Soft Matter}, year={2019}, volume={44} }

We present mesoscale numerical simulations based on the coupling of the fluctuating lattice Boltzmann method for multicomponent systems with a wetted finite-size particle model. This newly coupled methodologies are used to study the motion of a spherical particle driven by a constant body force in a confined channel with a fixed square cross section. The channel is filled with a mixture of two liquids under the effect of thermal fluctuations. After some validations steps in the absence of…

## References

SHOWING 1-10 OF 36 REFERENCES

### Thermal fluctuations and boundary conditions in the lattice Boltzmann method

- Physics
- 2008

The lattice Boltzmann method is a popular approach for simulating hydrodynamic interactions in soft matter and complex fluids. The solvent is represented on a discrete lattice whose nodes are…

### Slowing-down of non-equilibrium concentration fluctuations in confinement

- Physics
- 2014

Fluctuations in a fluid are strongly affected by the presence of a macroscopic gradient making them long-ranged and enhancing their amplitude. While small-scale fluctuations exhibit diffusive…

### Lattice Boltzmann simulations of droplet dynamics in time-dependent flows

- PhysicsThe European physical journal. E, Soft matter
- 2018

This work may be regarded as a step forward to discuss extensions towards a novel DNS approach, describing the mesoscale physics of small droplets subjected to a generic hydrodynamical strain field, possibly mimicking the effect of a realistic turbulent flow on dilute droplet suspensions.

### Confinement effect on the dynamics of non-equilibrium concentration fluctuations far from the onset of convection

- PhysicsThe European physical journal. E, Soft matter
- 2016

In the new experiments presented here, the magnitude of the temperature gradient is changed, confirming that the system is controlled solely by the solutal Rayleigh number, and that the slowing-down is dominated by a combined effect of the driving force of buoyancy, the dissipating force of diffusion and the confinement provided by the vertical extension of the sample cell.

### Computational study of radial particle migration and stresslet distributions in particle-laden turbulent pipe flow

- Physics, EngineeringThe European physical journal. E, Soft matter
- 2018

It was observed that the high particle-to-fluid slip velocity close to the wall corresponds locally to events of high energy dissipation, which are not present in the single-phase flow.

### Lattice Boltzmann model for simulating immiscible two-phase flows

- Physics
- 2007

The lattice Boltzmann equation is often promoted as a numerical simulation tool that is particularly suitable for predicting the flow of complex fluids. This paper develops a two-dimensional…

### Lattice-Boltzmann simulations of the dynamics of polymer solutions in periodic and confined geometries.

- PhysicsThe Journal of chemical physics
- 2005

It is shown that hydrodynamic interactions in large polymers can be systematically coarse-grained to substantially reduce the computational cost of the simulation, and the results support the qualitative conclusions of recent Brownian dynamics simulations of confined polymers.

### Brownian diffusion of a partially wetted colloid.

- PhysicsNature materials
- 2015

It is shown experimentally that a particle straddling an air/water interface feels a large viscous drag that is unexpectedly larger than that measured in the bulk.

### Fluctuating lattice Boltzmann

- Physics
- 2005

The lattice Boltzmann algorithm efficiently simulates the Navier-Stokes equation of isothermal fluid flow, but ignores thermal fluctuations of the fluid, important in mesoscopic flows. We show how to…

### Lattice-Boltzmann hydrodynamics of anisotropic active matter.

- PhysicsThe Journal of chemical physics
- 2016

A simple method to simulate self-propelled colloids interacting hydrodynamically in a viscous medium using the lattice-Boltzmann technique and it is demonstrated that shape-anisotropy can lead to the presence of a strong quadrupole and octupole moments, in addition to the principle dipole moment.