Three-dimensional condensation in a vertical channel filled with metal foam using a pseudo-potential lattice Boltzmann model

2022 ◽  
Vol 172 ◽  
pp. 107352
Author(s):  
Mohammad Javad Sayyari ◽  
Mohammad Hassan Ahmadian ◽  
Kyung Chun Kim
Keyword(s):  
Lattice Boltzmann ◽  
Metal Foam ◽  
Three Dimensional ◽  
Vertical Channel ◽  
Lattice Boltzmann Model ◽  
Boltzmann Model ◽  
Pseudo Potential

Modeling of collapsing cavitation bubble near solid wall by 3D pseudopotential multi-relaxation-time lattice Boltzmann method

2017 ◽  
Vol 232 (3) ◽  
pp. 445-456 ◽  
Author(s):  
Minglei Shan ◽  
Yu Yang ◽  
Hao Peng ◽  
Qingbang Han ◽  
Changping Zhu
Keyword(s):  
Relaxation Time ◽  
Lattice Boltzmann ◽  
Cavitation Bubble ◽  
Solid Wall ◽  
Three Dimensional ◽  
Lattice Boltzmann Model ◽  
Bubble Collapse ◽  
Lattice Boltzmann Simulation ◽  
Boltzmann Method ◽  
Boltzmann Model

Understanding the dynamic characteristic of the cavitation bubble near a solid wall is a fundamental issue for the bubble collapse application and prevention. In the present work, an improved three-dimensional multi-relaxation-time pseudopotential lattice Boltzmann model is adopted to investigate the cavitation bubble collapse near the solid wall. With respect to thermodynamic consistency, Laplace law verification, the three-dimensional pseudopotential multi-relaxation-time lattice Boltzmann model is investigated. By the theoretical analysis, it is proved that the model can be regarded as a solver of the Rayleigh–Plesset equation, and confirmed by comparing the results of the lattice Boltzmann simulation and the Rayleigh–Plesset equation calculation for the case of cavitation bubble collapse in the infinite medium field. The bubble collapse near the solid wall is modeled using the improved pseudopotential multi-relaxation-time lattice Boltzmann model. We find the lattice Boltzmann simulation and the experimental results have the same dynamic process by comparing the bubble profiles evolution. Form the pressure field and the velocity field evolution it is found that the tapered higher pressure region formed near the top of the bubble is a crucial driving force inducing the bubble collapse. This exploratory research demonstrates that the lattice Boltzmann method is an alternative tool for the study of the interaction between collapsing cavitation bubble and matter.

An Extended Pseudo Potential Multiphase Lattice Boltzmann Model with Variable Viscosity Ratio

2021 ◽  
pp. 337-348
Author(s):  
Mahmud Ashrafizaadeh ◽  
Farshad Gharibi ◽  
Seyyed Meysam Khatoonabadi
Keyword(s):  
Lattice Boltzmann ◽  
Viscosity Ratio ◽  
Variable Viscosity ◽  
Lattice Boltzmann Model ◽  
Boltzmann Model ◽  
Pseudo Potential

scholarly journals An alternative lattice Boltzmann model for three-dimensional incompressible flow

2014 ◽  
Vol 68 (10) ◽  
pp. 1107-1122 ◽  
Author(s):  
Liangqi Zhang ◽  
Zhong Zeng ◽  
Haiqiong Xie ◽  
Xutang Tao ◽  
Yongxiang Zhang ◽  
...  
Keyword(s):  
Incompressible Flow ◽  
Lattice Boltzmann ◽  
Three Dimensional ◽  
Lattice Boltzmann Model ◽  
Boltzmann Model

scholarly journals Three-dimensional lattice Boltzmann method benchmarks between color-gradient and pseudo-potential immiscible multi-component models

2017 ◽  
Vol 28 (07) ◽  
pp. 1750085 ◽  
Author(s):  
Sébastien Leclaire ◽  
Andrea Parmigiani ◽  
Bastien Chopard ◽  
Jonas Latt
Keyword(s):  
Lattice Boltzmann ◽  
Three Dimensional ◽  
Lattice Boltzmann Model ◽  
Test Problems ◽  
Droplet Deformation ◽  
Color Gradient ◽  
Scientific Results ◽  
Boltzmann Method ◽  
Component Models ◽  
Pseudo Potential

In this paper, a lattice Boltzmann color-gradient method is compared with a multi-component pseudo-potential lattice Boltzmann model for two test problems: a droplet deformation in a shear flow and a rising bubble subject to buoyancy forces. With the help of these two problems, the behavior of the two models is compared in situations of competing viscous, capillary and gravity forces. It is found that both models are able to generate relevant scientific results. However, while the color-gradient model is more complex than the pseudo-potential approach, numerical experiments show that it is also more powerful and suffers fewer limitations.

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