Isotropy and spurious currents in pseudo-potential multiphase lattice Boltzmann models

Peng，C.1; Ayala，Luis F.1; Ayala，Orlando M.2; Wang，Lian Ping3,4

2019-09-15

10.1016/j.compfluid.2019.104257

COMPUTERS & FLUIDS   影响因子和分区

0045-7930

1879-0747

The spurious currents observed in multiphase flow simulations with pseudo-potential lattice Boltzmann (LB) models are usually understood to be the result of the lack of isotropy of the model-generated interaction force between phases. Remedies have been proposed to utilize larger stencils to compute the interaction force with higher orders of isotropy. In this document, we point out the incompleteness in the current understanding and propose a new consistent implementation to more effectively suppress the spurious currents. We also demonstrate theoretically that certain low-level spurious currents cannot be eliminated by increasing isotropy if the local hydrostatic balance inside the diffuse interface is not established in the LB models.

Isotropy Pseudo-potential multiphase LBM Spurious currents

SCI ; EI

英语

其他

Pennsylvania State University[]

Computer Science ; Mechanics

Computer Science, Interdisciplinary Applications ; Mechanics

WOS:000504531700014

Elsevier Ltd

20193307311887

Computer science

COMPUTER SCIENCE

2-s2.0-85070529006

Scopus

1.Department of Energy and Mineral Engineering and EMS Energy InstituteThe Pennsylvania State University,University Park,16802,United States
2.111A Kaufman HallDepartment of Engineering TechnologyOld Dominion University,Norfolk,23529,United States
3.126 Spencer LabDepartment of Mechanical EngineeringUniversity of Delaware,Newark,19711,United States
4.Department of Mechanics and Aerospace EngineeringSouthern University of Science and Technology,Shenzhen,518055,China

Peng，C.,Ayala，Luis F.,Ayala，Orlando M.,et al. Isotropy and spurious currents in pseudo-potential multiphase lattice Boltzmann models[J]. COMPUTERS & FLUIDS,2019,191.

Peng，C.,Ayala，Luis F.,Ayala，Orlando M.,&Wang，Lian Ping.(2019).Isotropy and spurious currents in pseudo-potential multiphase lattice Boltzmann models.COMPUTERS & FLUIDS,191.

Peng，C.,et al."Isotropy and spurious currents in pseudo-potential multiphase lattice Boltzmann models".COMPUTERS & FLUIDS 191(2019).