Lattice Boltzmann-based single-phase method for free surface tracking of droplet motions

2006 ◽  
Vol 53 (2) ◽  
pp. 333-351 ◽  
Author(s):  
Xiu Qing Xing ◽  
David Lee Butler ◽  
Chun Yang
Keyword(s):  
Free Surface ◽  
Lattice Boltzmann ◽  
Single Phase ◽  
Phase Method ◽  
Surface Tracking

An Improved Single-Phase Free-Surface Lattice Boltzmann Model with Surface Tension and Wall Adhesion

2013 ◽  
Vol 300-301 ◽  
pp. 1062-1066
Author(s):  
Yang Yu ◽  
Li Chen ◽  
Jian Hua Lu ◽  
Guo Xiang Hou
Keyword(s):  
Surface Tension ◽  
Free Surface ◽  
Lattice Boltzmann ◽  
Single Phase ◽  
Lattice Boltzmann Model ◽  
Surface Model ◽  
Two Phase ◽  
Surface Method ◽  
Free Surface Model ◽  
Boltzmann Model

Free-surface model with surface tension and wall adhesion(wetting) is a very efficient technique to simulate two-phase flows with high density and viscosity ratios, such as etching and casting processes. In this paper, a conservative surface tension and wall adhesion model based on lattice Boltzmann single-phase free-surface method is proposed. The effectiveness of the model is demonstrated by simulating the flows induced by wall adhesion and surface tension, and filling processes in a 2D cavity.

SIMULATION OF AN AXISYMMETRIC RISING BUBBLE BY A MULTIPLE RELAXATION TIME LATTICE BOLTZMANN METHOD

2009 ◽  
Vol 23 (24) ◽  
pp. 4907-4932 ◽  
Author(s):  
ABBAS FAKHARI ◽  
MOHAMMAD HASSAN RAHIMIAN
Keyword(s):  
Free Surface ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Rise Velocity ◽  
Rising Bubble ◽  
Wide Range ◽  
Theoretical Predictions ◽  
Multiple Relaxation Time ◽  
Bubble Rising ◽  
Boltzmann Method

In this paper, the lattice Boltzmann method is employed to simulate buoyancy-driven motion of a single bubble. First, an axisymmetric bubble motion under buoyancy force in an enclosed duct is investigated for some range of Eötvös number and a wide range of Archimedes and Morton numbers. Numerical results are compared with experimental data and theoretical predictions, and satisfactory agreement is shown. It is seen that increase of Eötvös or Archimedes number increases the rate of deformation of the bubble. At a high enough Archimedes value and low Morton numbers breakup of the bubble is observed. Then, a bubble rising and finally bursting at a free surface is simulated. It is seen that at higher Archimedes numbers the rise velocity of the bubble is greater and the center of the free interface rises further. On the other hand, at high Eötvös values the bubble deforms more and becomes more stretched in the radial direction, which in turn results in lower rise velocity and, hence, lower elevations for the center of the free surface.

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