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

Abstract

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

Viscous Dissipation and Apparent Permeability of Gas Flow in Nanoporous Media

“…LBM is a newly developed mesoscale simulation method which can be derived from the Boltzmann equation. It has been widely used in many areas, such as multiphase and multicomponent flow (Chen et al, ; Huang et al, ; Qin et al, ; Qin et al, ; Qin et al, ; Qin et al, ; Zhao et al, ), reactive flow (Kang et al, ), and thermal flow (Kang et al, ). Due to the high computational efficiency and kinetic physical basis, LBM has also been adopted to simulate pore‐scale shale gas flow in recent years.…”

Lattice Boltzmann modeling of heat conduction enhancement by colloidal nanoparticle deposition in microporous structures

“…As introduced, the tricoupled hybrid LBM [43,44] is applied here to study the drying of colloidal suspension and nanoparticle deposition in microporous structures. The tricoupled model is built up in the following way.…”

“…Although Lagrangian models can provide more accurate results considering each individual particle, the computational costs become prohibitively high when a huge number of particles is involved [42]. In Eulerian models, nanoparticles are represented as an "idealized" solute concentration described with a convection diffusion equation [43,44]. In this way, the equivalent of a massive number of nanoparticles can be considered easily.…”

“…The Eulerian-type tricoupled hybrid LBM developed in Ref. [43] for two-dimensional (2D) simulation has shown high accuracy and capability in simulating and analyzing two-phase flow, nanoparticle transport and deposition in a thin microporous architecture. In this paper, a tricoupled hybrid LBM is further developed for 3D investigations.…”

Non‐Lithography Hydrodynamic Printing of Micro/Nanostructures on Curved Surfaces

“…The combination of the template-induced hydrodynamic printing and selfassembly of NPs is systematically investigated through numerical simulation via the lattice Boltzmann model (LBM). [19][20][21][22] The controllability and flexibility of micro/ nanostructures enable photonic manipulation on curved surfaces, including a combination of photoluminescence, spatial waveguide, and periodic photonic crystals. Iridescence light propagation of all-dielectric NP-assembled photonics on the cylindrically curved surfaces will have applications in photonic communications and color holograms.…”