Numerical prediction of effective thermal conductivity of ceramic fiber board using lattice Boltzmann method

2018 ◽  
Vol 74 (6) ◽  
pp. 1285-1300 ◽  
Author(s):  
Mazhar Hussain ◽  
Wen-Quan Tao
Keyword(s):  
Thermal Conductivity ◽  
Lattice Boltzmann Method ◽  
Effective Thermal Conductivity ◽  
Lattice Boltzmann ◽  
Numerical Prediction ◽  
Ceramic Fiber ◽  
Boltzmann Method

scholarly journals Lattice Boltzmann method simulation of the gas heat conduction of nanoporous material

2020 ◽  
Vol 24 (6 Part A) ◽  
pp. 3749-3756
Author(s):  
Ya Han ◽  
Shuai Li ◽  
Hai-Dong Liu ◽  
Weipeng Cui
Keyword(s):  
Thermal Conductivity ◽  
Heat Conduction ◽  
Lattice Boltzmann Method ◽  
Knudsen Number ◽  
Lattice Boltzmann ◽  
Size Effects ◽  
Temperature Jump ◽  
Boundary Scattering ◽  
Nanoporous Material ◽  
Boltzmann Method

In order to deeply investigate the gas heat conduction of nanoporous aerogel, a model of gas heat conduction was established based on microstructure of aerogel. Lattice Boltzmann method was used to simulate the temperature distribution and gas thermal conductivity at different size, and the size effects of gas heat conduction have had been obtained under micro-scale conditions. It can be concluded that the temperature jump on the boundary was not obvious and the thermal conductivity remained basically constant when the value of Knudsen number was less than 0.01; as the value of Knudsen number increased from 0.01 to 0.1, there was a clear temperature jump on the boundary and the thermal conductivity tended to decrease and the effect of boundary scattering increased drastically, as the value of Knudsen number was more than 0.1, the temperature jump increased significantly on the boundary, furtherly, the thermal conductivity decreased dramatically, and the size effects were significantly.

scholarly journals Lattice Boltzmann method for heat transfer problems with variable thermal conductivity

2017 ◽  
Vol 35 (2) ◽  
pp. 313-324 ◽  
Author(s):  
Rihab Hamila ◽  
Raoudha Chaabane ◽  
Faouzi Askri ◽  
Abdelmajid Jemni ◽  
Sassi Nasrallah
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Variable Thermal Conductivity ◽  
Boltzmann Method ◽  
Transfer Problems
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