Reduction-consistent multiple-relaxation-time lattice Boltzmann equation method for wall bounded N immiscible incompressible fluids

2021 ◽  
pp. 104896
Author(s):  
Lin Zheng ◽  
Song Zheng ◽  
Qinglan Zhai
Keyword(s):  
Relaxation Time ◽  
Boltzmann Equation ◽  
Lattice Boltzmann ◽  
Incompressible Fluids ◽  
Equation Method ◽  
Lattice Boltzmann Equation ◽  
Multiple Relaxation Time

Thermal levitation

2008 ◽  
Vol 606 ◽  
pp. 105-114 ◽  
Author(s):  
F. MANDUJANO ◽  
R. RECHTMAN
Keyword(s):  
Boltzmann Equation ◽  
Lattice Boltzmann ◽  
Terminal Velocity ◽  
Equation Method ◽  
Lattice Boltzmann Equation ◽  
Two Component ◽  
Thermal Lattice Boltzmann

A particle with a density slightly larger than that of the fluid in which it is immersed will sediment. However, if the particle's temperature is higher than that of the fluid, the terminal velocity of sedimentation will be smaller and can even change sign. When the terminal velocity is zero we say there is thermal levitation. Thermal levitation can also occur when the density and temperature of the particle are smaller than those of the fluid. Using a two-component thermal lattice Boltzmann equation method, we study this phenomenon and show it can be stable or unstable.

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