Electrohydrodynamics in leaky dielectric fluids using lattice Boltzmann method

Singh, Rahul; Bahga, Supreet Singh; Gupta, Amit

doi:10.1016/j.euromechflu.2018.11.011

Cited by 22 publications

(8 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[2]) to scientific articles, can be found for maybe a century or so. There is a decent number of processes that use the electric field to influence fluids [3,4], such as electrocoalescence [5], electrospraying [6] and solvent extraction. Furthermore, for example, the electrospray process is used in mass spectrometry [7], inkjet printing [8], encapsulations [9], etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation of electrohydrodynamic calculations

Boskovic

Karač

Vrhovac

et al. 2022

Hem Ind

View full text Add to dashboard Cite

A perfect dielectric model was incorporated into the OpenFOAM? software and used for investigation and, possibly, improvements of electrohydrodynamic calculations. Two different sets of numerical simulations were analyzed, in which two different fluids were present. The first set was one-dimensional, while in the second, a drop of one fluid was surrounded by the other fluid. It is shown that oscillations and possible artificial generation of a curl of the electric field strength can be observed at applying certain expressions or calculation strategies, which can be thus abandoned. Usage of dynamic meshes, at least those present in the used software, and of limiters for the gradient of the electric field strength can lead to large numerical errors. It is also shown that usage of certain cell face values could improve the results. An electric Courant number was derived by dimensional analysis, and it could be suggested for future calculations. Conclusions made in this paper are expected to be transferable to other more complicated models.

show abstract

Section: Introductionmentioning

confidence: 99%

Investigation of electrohydrodynamic calculations

Boskovic

Karač

Vrhovac

et al. 2022

Hem Ind

View full text Add to dashboard Cite

show abstract

“…A brief background of the method is given in appendix A and the details can be obtained from previous publications (Singh et al. 2019 a , b ).…”

Section: Resultsmentioning

confidence: 99%

“…which in turn is incorporated in the collision step of the lattice Boltzmann method (Singh et al 2019b). In the above equation (A 5), w i is the weight function, τ is the relaxation time, u is the velocity vector, e is the lattice vector and c s is the speed of sound in lattice units.…”

Section: Discussionmentioning

confidence: 99%

“…Experiments are supplemented with three-dimensional numerical simulations to obtain a mechanistic understanding of electrohydrodynamics in the droplet generation process. The numerical simulations are carried out by using a coupled leaky-dielectric and multicomponent lattice Boltzmann model (Singh, Bahga & Gupta 2019 a , b ).…”

Section: Introductionmentioning

confidence: 99%

“…This body force term is further used to calculate the source term, given as (Guo, Zheng & Shi 2002) which in turn is incorporated in the collision step of the lattice Boltzmann method (Singh et al. 2019 b ). In the above equation (A 5), is the weight function, is the relaxation time, is the velocity vector, is the lattice vector and is the speed of sound in lattice units. For the electrostatic part of the framework, the local electrical properties are assumed to vary as where and are the dielectric permittivity and electric conductivity of the fluids.…”

mentioning

confidence: 99%

See 2 more Smart Citations