scholarly journals Numerical modelling of the transient heat transport in 2D silicon thin film using the interval lattice Boltzmann method

2014 ◽  
Vol 13 (2) ◽  
pp. 95-103
Author(s):  
Alicja Piasecka Belkhayat ◽  
◽  
Anna Korczak ◽  
Keyword(s):  
Thin Film ◽  
Numerical Modelling ◽  
Lattice Boltzmann Method ◽  
Heat Transport ◽  
Lattice Boltzmann ◽  
Silicon Thin Film ◽  
Boltzmann Method

scholarly journals Modelling of transient heat transport in metal films using the interval lattice Boltzmann method

2016 ◽  
Vol 64 (3) ◽  
pp. 599-606 ◽  
Author(s):  
A. Piasecka Belkhayat ◽  
A. Korczak
Keyword(s):  
Lattice Boltzmann Method ◽  
Heat Transport ◽  
Lattice Boltzmann ◽  
Relaxation Times ◽  
Metal Films ◽  
Thin Metal ◽  
Heating Process ◽  
Boltzmann Transport ◽  
Thin Metal Films ◽  
Boltzmann Method

Abstract In the paper a description of heat transfer in one-dimensional crystalline solids is presented. The lattice Boltzmann method based on Boltzmann transport equation is used to simulate the nanoscale heat transport in thin metal films. The coupled lattice Boltzmann equations for electrons and phonons are applied to analyze the heating process of thin metal films via laser pulse. Such approach in which the parameters appearing in the problem analyzed are treated as constant values is widely used, but in the paper the interval values of relaxation times and electron-phonon coupling factor are taken into account. The problem formulated has been solved by means of the interval lattice Boltzmann method using the rules of directed interval arithmetic. In the final part of the paper the results of numerical computations are shown.

scholarly journals Droplet Impact on a Moving Thin Film with Pseudopotential Lattice Boltzmann Method

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Jinchao He ◽  
Hao Yuan ◽  
Xiaolong He ◽  
Chunhang Xie ◽  
Haonan Peng ◽  
...  
Keyword(s):  
Thin Film ◽  
Film Thickness ◽  
Liquid Film ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Critical Value ◽  
Droplet Impact ◽  
Maximum Value ◽  
Tension Term ◽  
Boltzmann Method

The pseudopotential lattice Boltzmann method (LBM) with a tunable surface tension term is applied to study a droplet impact on a moving thin film. The Re effects of dimensionless parameters on the upstream and downstream crown evolution are studied, including Reynolds number (Re), Weber number (We), liquid film thickness, and horizontal velocity of the liquid film. The movement of the liquid film causes the asymmetry development of the upstream and downstream crown. Both the instability of upstream and downstream crowns increases with the increase of Re and We, and the upstream crown becomes more prone to break up. And a critical value of film thickness exists with the height of the upstream and downstream liquid crowns reaches the maximum value. And the velocity of liquid film restrains the development of the height of the upstream and downstream crowns, but it promotes the growth of the crown radius.

Using the Lattice Boltzmann Method to Simulate the Heat Conduction in a Thin Film Induced by Ultra-Fast Laser

2015 ◽  
Vol 723 ◽  
pp. 896-900
Author(s):  
Yu Dong Mao ◽  
Ming Tian Xu
Keyword(s):  
Thin Film ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Laser Heating ◽  
Silicon Film ◽  
Fourier Law ◽  
Higher Temperature ◽  
Boltzmann Method ◽  
Heating Technology ◽  
Thin Silicon Film

Ultra-fast laser heating technology has been widely used in the micro-/nanodevices. The Lattice Boltzmann method (LBM) is employed to simulate the heat conductions of laser heating appeared in a thin film. The results obtained by the LBM show that a wavelike behavior is appeared, but it can not be found in Fourier prediction. Comparing the results obtained by the Fourier law and LBM, we find that the LBM solution shows higher temperature than the Fourier prediction. Moreover, simultaneously heating both surfaces of a thin silicon film by ultra-fast lasers can induce two thermal waves traveling in the opposite directions, and when they meet together, the energy will enhance significantly.

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