Lattice Boltzmann Simulation of Particle Motion in Binary Immiscible Fluids

Chen, Yu; Kang, Qinjun; Cai, Qingchun; Wang, Moran; Zhang, Dongxiao

doi:10.4208/cicp.101114.150415a

Cited by 20 publications

(11 citation statements)

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“…In Lagrangian models, the movement of each individual particle is described with Newton's second law. Particle motions in binary immiscible fluids [50] and isothermal drying of a colloidal drop [51] have been previously simulated with the Lagrangian method. Similarly in [52], massless tracers are used to model particle motions inside the liquid droplet and around the liquid-vapor interface during droplet drying.…”

Section: Introductionmentioning

confidence: 99%

Tricoupled hybrid lattice Boltzmann model for nonisothermal drying of colloidal suspensions in micropore structures

et al. 2019

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In the past three decades, lattice Boltzmann modeling, which originated from the lattice gas automata method [9], has been developed into an efficient numerical approach to simulate and study different complex fluid flow problems ranging from turbulent [10,11] and multiphase flows [12-16] to thermal [17,18] and particulate flows [19,20]. For multiphase flows, there are in general four main categories of lattice Boltzmann models (LBMs): the Shan-Chen pseudopotential model [21,22], the free energy model [13,23,24], the colorgradient model [25], and the phase-field model [26,27]. Due to its simplicity and versatility, we apply the pseudopotential model which presents the intermolecular interactions with a density-dependent pseudopotential. The phase separation in this model is achieved by imposing a neighbor attraction between different phases; thus no interface tracking or reconstruction is needed. The original pseudopotential model suffers from the numerical instability when applied to large

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Section: Introductionmentioning

confidence: 99%

Tricoupled hybrid lattice Boltzmann model for nonisothermal drying of colloidal suspensions in micropore structures

et al. 2019

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“…Lattice Boltzmann method (LBM) is an efficient numerical method to simulate fluid flow, heat, and mass transfer especially with complicated boundary condition and multiphase interfaces [ Wang et al , , ; Zhang and Wang , ]. Recently, LBM has been also widely used to simulate fluid‐solid coupling system owing to its high accuracy and efficiency [ Boutt et al , ; Chen et al , , , ].…”

Section: Numerical Methods and Validationsmentioning

confidence: 99%

“…To validate the current LBM-DEM scheme for fluid-solid coupling problems, two benchmark cases are considered, single-sphere sedimentation and two-sphere sedimentation. Because results of direct numerical simulations for sphere sedimentations have been presented in many previous papers using finite element method (FEM) or other methods [Chen et al, 2015;Glowinski et al, 2001;Sharma and Patankar, 2005;Strack and Cook, 2007], there is sufficient data available for validation.…”

Section: Validationsmentioning

confidence: 99%

Pore‐scale modeling of hydromechanical coupled mechanics in hydrofracturing process

Chen

Wang

2017

JGR Solid Earth

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Hydrofracturing is an important technique in petroleum industry to stimulate well production. Yet the mechanism of induced fracture growth is still not fully understood, which results in some unsatisfactory wells even with hydrofracturing treatments. In this work we establish a more accurate numerical framework for hydromechanical coupling, where the solid deformation and fracturing are modeled by discrete element method and the fluid flow is simulated directly by lattice Boltzmann method at pore scale. After validations, hydrofracturing is simulated with consideration on the strength heterogeneity effects on fracture geometry and microfailure mechanism. A modified topological index is proposed to quantify the complexity of fracture geometry. The results show that strength heterogeneity has a significant influence on hydrofracturing. In heterogeneous samples, the fracturing behavior is crack nucleation around the tip of fracture and connection of it to the main fracture, which is usually accompanied by shear failure. However, in homogeneous ones the fracture growth is achieved by the continuous expansion of the crack, where the tensile failure often dominates. It is the fracturing behavior that makes the fracture geometry in heterogeneous samples much more complex than that in homogeneous ones. In addition, higher pore pressure leads to more shear failure events for both heterogeneous and homogeneous samples.

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“…However, current model cannot be expanded to two phase fluid solid coupled system, but momentum exchange based models has been used to simulate the particle motion in two phase fluids system. 58 As mentioned above, the internal fluid effect is caused by the inertial force of the internal fluid that is proportional to the inertial force of the solid particle. Thus, the numerical error in the original IMB method depends on the inertial force of the solid particle.…”

Section: Ta B L Ementioning

confidence: 99%

An improved immersed moving boundary for hydrodynamic force calculation in lattice Boltzmann method

Chen

Wang

2020

Numerical Meth Engineering

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Summary Particles suspension is considerably prevalent in petroleum industry and chemical engineering. The efficient and accurate simulation of such a process is always a challenge for both the traditional computational fluid dynamics and lattice Boltzmann method. Immersed moving boundary (IMB) method is promising to resolve this issue by introducing a particle‐fluid interaction term in the standard lattice Boltzmann equation, which allows for the smooth hydrodynamic force calculation even for a large grid size relative to the solid particle. Although the IMB method was proved good for stationary particles, the deviation of hydrodynamic force on moving particles exists. In this work, we reveal the physical origin of this problem first and figure out that the internal fluid effect on the hydrodynamic force calculation is not counted in the previous IMB. An improved immersed moving boundary method is therefore proposed by considering the internal fluid correction, which is easy to implement with the little extra computation cost. A 2D single elliptical particle and a 3D sphere sedimentation in Newtonian fluid is simulated directly for the validation of the corrected model by excellent agreements with the standard data.

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Lattice Boltzmann Simulation of Particle Motion in Binary Immiscible Fluids

Cited by 20 publications

References 50 publications

Tricoupled hybrid lattice Boltzmann model for nonisothermal drying of colloidal suspensions in micropore structures

Tricoupled hybrid lattice Boltzmann model for nonisothermal drying of colloidal suspensions in micropore structures

Pore‐scale modeling of hydromechanical coupled mechanics in hydrofracturing process

An improved immersed moving boundary for hydrodynamic force calculation in lattice Boltzmann method

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