scholarly journals Numerical modelling of transient heat transport in a two-layered metal film using the fuzzy lattice Boltzmann method with α-cuts

2018 ◽  
Author(s):  
Alicja Piasecka-Belkhayat ◽  
Anna Korczak
Keyword(s):  
Numerical Modelling ◽  
Lattice Boltzmann Method ◽  
Heat Transport ◽  
Lattice Boltzmann ◽  
Metal Film ◽  
Fuzzy Lattice ◽  
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.

Lattice Boltzmann Modeling of Ultrafast Laser Heating on Metal Film

2013 ◽  
Author(s):  
Dadong Wang ◽  
Yanbao Ma
Keyword(s):  
Transport Equation ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Laser Heating ◽  
Metal Film ◽  
Phonon Scattering ◽  
Boltzmann Transport Equation ◽  
Ultrafast Laser ◽  
Boltzmann Transport ◽  
Boltzmann Method

Lattice Boltzmann method based on Boltzmann transport equation is developed to simulate the nanoscale heat transport in metal film. The Boltzmann transport equation is applicable to describe both electron and phonon scattering processes: the absorption of photon energy by electrons and the subsequent heating of metal lattice (phonons) through electron-phonon collisions. We show that the Boltzmann transport equation can give rise to the well-known two-temperature model. To validate our numerical tool, ultrafast laser heating on metal film is analyzed by lattice Boltzmann method and finite difference method based on two-step model separately, and exactly the same results are obtained. The predicted transient reflectivity changes agree with picosecond laser heating experiments data also.

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