scholarly journals Lattice Boltzmann method for phase-separating liquid-vapor systems

2005 ◽  
Author(s):  
Victor Sofonea
Keyword(s):  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Boltzmann Method ◽  
Liquid Vapor

scholarly journals Simulating liquid-vapor phase separation under shear with lattice Boltzmann method

2009 ◽  
Vol 52 (9) ◽  
pp. 1337-1344 ◽  
Author(s):  
Ce Wang ◽  
AiGuo Xu ◽  
GuangCai Zhang ◽  
YingJun Li
Keyword(s):  
Phase Separation ◽  
Lattice Boltzmann Method ◽  
Vapor Phase ◽  
Lattice Boltzmann ◽  
Boltzmann Method ◽  
Liquid Vapor

scholarly journals Simulation of phase separation in a Van der Waals fluid under gravitational force with Lattice Boltzmann method

2019 ◽  
Vol 29 (9) ◽  
pp. 3095-3109 ◽  
Author(s):  
Ezequiel Oscar Fogliatto ◽  
Alejandro Clausse ◽  
Federico Eduardo Teruel
Keyword(s):  
Phase Separation ◽  
Numerical Simulations ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Van Der Waals ◽  
Numerical Results ◽  
Density Profiles ◽  
Content Type ◽  
Boltzmann Method ◽  
Liquid Vapor

PurposeThis paper aims to assess the accuracy of Lattice Boltzmann method (LBM) for numerical simulation of the stratification of a Van der Waals (VdW) fluid subjected to a gravity field and non-uniform temperature distribution. A sensitivity analysis of the influence of the pseudopotential parameters and the grid resolution is presented. The effect of gravity force on interface densities, density profiles and liquid volume fraction is studied.Design/methodology/approachThe D2Q9 multiple-relaxation-time pseudopotential LBM for two-phase flow is proposed to simulate the phase separation. The analytical solution for density profiles in a one-dimensional problem is derived and used as a benchmark case to validate the numerical results.FindingsThe numerical results reproduce the analytical density profiles with great accuracy over a wide range of simulation conditions, including variations of the gravity and temperature fields. Particularly, the numerical simulations are able to represent the effect of gravity on the existence and position of the liquid–vapor boundary of an ideal pure substance in thermodynamic equilibrium. The sensitivity of the results to variations of the calibration parameters of the VdW pseudopotential was assessed.Research limitations/implicationsThe numerical simulations were performed assuming a VdW fluid in a 2-D cavity with one periodic direction for which analytical solutions for benchmarking purposes are possible to obtain.Originality/valueThe following fundamental question is addressed: Is the pseudopotential LBM capable of simulating accurately the liquid–vapor equilibrium under gravity forces and temperature gradients? Moreover, regarding that the pseudopotential model requires the calibration of several internal parameters to achieve thermodynamic consistency, the sensitivity of the results to variations of these parameters is assessed.

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