Entropic lattice Boltzmann model for charged leaky dielectric multiphase fluids in electrified jets

Lauricella, Marco; Melchionna, Simone; Montessori, Andrea; Pisignano, Dario; Pontrelli, Giuseppe; Succi, Sauro

doi:10.1103/physreve.97.033308

Cited by 22 publications

(9 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, if all the parameters in the matrix S are set equal to βs2, with the entropic modification coefficient β defined in [43], the present formulation could further reduce to the original ELBM. With the stabilizing effects of the entropic condition, KBC and ELBM show considerable improvements in numerical stability, with successful applications to multiphase flows [44–46].…”

Section: Model Descriptionmentioning

confidence: 99%

A unified lattice Boltzmann model and application to multiphase flows

Luo

Fei

Wang

2021

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

In this work, we develop a unified lattice Boltzmann model (ULBM) framework that can seamlessly integrate the widely used lattice Boltzmann collision operators, including the Bhatnagar–Gross–Krook or single-relation-time, multiple-relaxation-time, central-moment or cascaded lattice Boltzmann method and multiple entropic operators (KBC). Such a framework clarifies the relations among the existing collision operators and greatly facilitates model comparison and development as well as coding. Importantly, any LB model or treatment constructed for a specific collision operator could be easily adopted by other operators. We demonstrate the flexibility and power of the ULBM framework through three multiphase flow problems: the rheology of an emulsion, splashing of a droplet on a liquid film and dynamics of pool boiling. Further exploration of ULBM for a wide variety of phenomena would be both realistic and beneficial, making the LBM more accessible to non-specialists. This article is part of the theme issue ‘Progress in mesoscale methods for fluid dynamics simulation’.

show abstract

Section: Model Descriptionmentioning

confidence: 99%

A unified lattice Boltzmann model and application to multiphase flows

Luo

Fei

Wang

2021

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

show abstract

“…To model the non Newtonian fluids, the model is extended in similarity with the approach reported in Refs [30][31][32][33] . The extension consists essentially of determining the local value of the relaxation time, in such a way that the desired local value of the viscosity is recovered to match a constitutive equation for the stress tensor [32][33][34][35] .…”

Section: B Extension To Non-newtonian Flow and Moving Print Headmentioning

confidence: 99%

Lattice Boltzmann Multicomponent Model for Direct-Writing Printing

Monteferrante,

Montessori,

Succi

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

We introduce a mesoscale approach for the simulation of multicomponent flows to model the direct-writing printing process, along with the early stage of ink deposition. As an application scenario, alginate solutions at different concentrations are numerically investigated alongside processing parameters, such as apparent viscosity, extrusion rate, and print head velocity. The present approach offers useful insights on the ink rheological effects upon printed products, susceptible to geometric accuracy and shear stress, by manufacturing processes such as the direct-writing printing for complex photonic circuitry, bio-scaffold fabrication, and tissue engineering.

show abstract

“…7 Employing this model to simulate the EHD related problems, several numerical studies have been conducted including Finite Volume Method (FVM), 8 Finite Element Method (FEM), 9 and Lattice Boltzmann Method (LBM). 10,11 Although there have been many studies on the EHD of a droplet in an unbounded domain, [12][13][14][15][16] the number of studies on confined domains is relatively low. The confined domain refers to the condition where the dimensions of both the droplet and the domain are comparable.…”

Section: Introductionmentioning

confidence: 99%

Electrohydrodynamics of a droplet in a highly confined domain: A numerical study

2020

View full text Add to dashboard Cite

In this paper, electrohydrodynamics (EHD) deformation of a droplet in a highly confined domain is studied by using the incompressible smoothed particle hydrodynamics method. Simulations are performed for six different systems of a droplet and ambient fluid corresponding to different electrical properties. The effects of confinement ratios, from 0 to 0.95, on the droplet deformation are discussed thoroughly. It is shown that the deformation is highly dependent on the ratios of electrical permittivity, electrical conductivity, and confinement ratio. To demonstrate the droplet behavior, electric force components on the droplet interface are calculated and discussed in detail. It is shown that the interaction of these forces plays a major role in the droplet deformation. Furthermore, it is illustrated that the pressure force becomes significant at high confinement ratios and affects the droplet behavior in addition to the electric forces. Different values of unbounded deformation are selected for the EHD simulation. The effect of unbounded deformation on the droplet behavior is also discussed, and it is found that the unbounded deformation influence is important in some of the systems and confinement ratios.

show abstract

Entropic lattice Boltzmann model for charged leaky dielectric multiphase fluids in electrified jets

Cited by 22 publications

References 59 publications

A unified lattice Boltzmann model and application to multiphase flows

A unified lattice Boltzmann model and application to multiphase flows

Lattice Boltzmann Multicomponent Model for Direct-Writing Printing

Electrohydrodynamics of a droplet in a highly confined domain: A numerical study

Contact Info

Product

Resources

About