Evaluation of Forcing Schemes in Pseudopotential Based Multiphase Lattice Boltzmann Model

Reddy, G S and Banerjee, Raja (2017) Evaluation of Forcing Schemes in Pseudopotential Based Multiphase Lattice Boltzmann Model. In: Fluid Mechanics and Fluid Power - Contemporary Research. Lecture Notes in Mechanical Engineering . Springerlink, pp. 1003-1010. ISBN 978-81-322-2743-4

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For the past two decades LBM has been interest of research for handling multiphase and multicomponent fluid flows. The pseudo-potential model is a widely used multiphase Lattice Boltzmann model based on the Equation of State (EOS) proposed by Shan and Chen. In the multiphase LB model, an interaction force between the molecules is being incorporated using a forcing scheme that automatically cause phase separation without tracking the interface. In this paper three different forcing schemes: the Discrete Force Method, Velocity Shift Method and Exact Difference Method are evaluated to study their effect on relaxation parameter. The spurious currents are estimated for different values of relaxation parameters. SCEOS is found to be stable with all forcing schemes at lower liquid to gas density ratios when viscosity ratio is set to unity. Numerical simulations were performed on D2Q9 lattice structure. The density and kinematic viscosity ratios between the liquid and gas phases were maintained at 50 and 5 respectively.

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IITH Creators:
IITH CreatorsORCiD
Banerjee, Rajahttp://orcid.org/0000-0002-7163-1470
Item Type: Book Section
Uncontrolled Keywords: Relaxation parameter; Lattice Boltzmann method; Spurious currents; D2Q9; EDM; VSM; DFM
Subjects: Physics > Mechanical and aerospace
Divisions: Department of Physics
Depositing User: Team Library
Date Deposited: 08 Mar 2017 10:23
Last Modified: 31 Aug 2017 03:52
URI: http://raiith.iith.ac.in/id/eprint/3075
Publisher URL: https://doi.org/10.1007/978-81-322-2743-4_94
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