scholarly journals Diffuse-interface modeling of liquid-vapor phase separation in a van der Waals fluid

2009 ◽  
Vol 21 (4) ◽  
pp. 044107 ◽  
Author(s):  
A. G. Lamorgese ◽  
R. Mauri
Keyword(s):  
Phase Separation ◽  
Vapor Phase ◽  
Van Der Waals ◽  
Diffuse Interface ◽  
Van Der Waals Fluid ◽  
Interface Modeling ◽  
Liquid Vapor

Diffuse interface modeling of liquid–vapor phase transition with hysteresis

2008 ◽  
Vol 403 (2-3) ◽  
pp. 505-508 ◽  
Author(s):  
I. Jancskar ◽  
Z. Sari ◽  
L. Szakonyi ◽  
A. Ivanyi
Keyword(s):  
Phase Transition ◽  
Vapor Phase ◽  
Diffuse Interface ◽  
Interface Modeling ◽  
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

CONVECTIVE PATTERNS IN LIQUID–VAPOR SYSTEMS WITH DIFFUSE INTERFACE

2006 ◽  
Vol 16 (09) ◽  
pp. 2705-2711 ◽  
Author(s):  
RODICA BORCIA ◽  
DOMNIC MERKT ◽  
MICHAEL BESTEHORN
Keyword(s):  
Phase Field ◽  
Compressible Fluid ◽  
Field Model ◽  
Marangoni Convection ◽  
Van Der Waals ◽  
Phase Field Model ◽  
Diffuse Interface ◽  
Fully Nonlinear ◽  
Nonlinear Simulations ◽  
Liquid Vapor

Recently, we have developed a phase field model to describe Marangoni convection with evaporation in a compressible fluid of van der Waals type away from criticality [Eur. Phys. J. B44 (2005)]. Using this model, we report now 2D fully nonlinear simulations where we emphasize the influence of evaporation on convective patterns.

Liquid-vapor phase separation in a thermocapillary force field

2002 ◽  
Vol 59 (2) ◽  
pp. 245-251 ◽  
Author(s):  
D Beysens ◽  
Y Garrabos ◽  
V. S Nikolayev ◽  
C Lecoutre-Chabot ◽  
J.-P Delville ◽  
...  
Keyword(s):  
Phase Separation ◽  
Force Field ◽  
Vapor Phase ◽  
Thermocapillary Force ◽  
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.

Sign in / Sign up

Export Citation Format

Share Document