scholarly journals On the interaction between bubbles and the free surface with high density ratio 3D lattice Boltzmann method

2018 ◽  
Vol 8 (4) ◽  
pp. 252-256 ◽  
Author(s):  
Guo-Qing Chen ◽  
A-Man Zhang ◽  
Xiao Huang
Keyword(s):  
Free Surface ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Density Ratio ◽  
High Density ◽  
High Density Ratio ◽  
Boltzmann Method

scholarly journals Wetting boundaries for a ternary high-density-ratio lattice Boltzmann method

2019 ◽  
Vol 100 (1) ◽  
Author(s):  
Neeru Bala ◽  
Marianna Pepona ◽  
Ilya Karlin ◽  
Halim Kusumaatmaja ◽  
Ciro Semprebon
Keyword(s):  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Density Ratio ◽  
High Density ◽  
High Density Ratio ◽  
Boltzmann Method

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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