THERMAL RADIATION EFFECT ON THE EFFECTIVE THERMAL CONDUCTIVITY OF POROUS MATERIAL BY PORE LEVEL NUMERICAL SIMULATION

2018 ◽  
Author(s):  
M. G. Luo ◽  
Junming Zhao ◽  
Linhua Liu
Keyword(s):  
Thermal Conductivity ◽  
Numerical Simulation ◽  
Porous Material ◽  
Thermal Radiation ◽  
Effective Thermal Conductivity ◽  
Radiation Effect ◽  
Pore Level ◽  
Thermal Radiation Effect

Numerical Simulation on the Effective Thermal Conductivity of Porous Material

2012 ◽  
Vol 557-559 ◽  
pp. 2388-2395
Author(s):  
Shan Qi Liu ◽  
Yong Bing Li ◽  
Xu Yao Liu ◽  
Bo Jing Zhu ◽  
Hui Quan Tian ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Numerical Simulation ◽  
Porous Material ◽  
Effective Thermal Conductivity ◽  
Random Distribution ◽  
Simulation Method ◽  
Solid Skeleton ◽  
Material Models ◽  
Application Prospects ◽  
Good Agreement

The thermal conductivity of porous material is an important basic parameter, but it is not easy to study, due to the complexity of the structure of porous material. In the present work, we show a numerical simulation method to study the thermal conductivity of the porous material. We generate 200 material models with random distribution of solid skeleton and air for a fixed porosity, then we get the effective thermal conductivity of the porous material by Monte Carlo statistical analysis. The results are in good agreement with the previous empirical formula. The numerical results show that the effective thermal conductivity of porous material depends on the thermophysical properties of solid skeleton and air, the pore distribution and pore structure, the numerical error decreases with the increase in the number of grids, this finite element method can be used to estimate the effective thermal conductivity of composites and maybe has broad application prospects in terms of computing the effective thermal conductivity and other physical properties of composite material with known components.

Effective thermal conductivity and internal thermal radiation in burning black liquor particles

2003 ◽  
Vol 175 (5) ◽  
pp. 873-900 ◽  
Author(s):  
M. P. Järvinen* ◽  
R. Zevenhoven ◽  
E. K. Vakkilainen ◽  
M. Forssén
Keyword(s):  
Thermal Conductivity ◽  
Thermal Radiation ◽  
Effective Thermal Conductivity ◽  
Black Liquor

Thermal radiation effect on thermal explosion in gas containing fuel droplets

1999 ◽  
Vol 3 (4) ◽  
pp. 769-787 ◽  
Author(s):  
Igor Goldfarb ◽  
Vladimir Gol'dshtein ◽  
Grigory Kuzmenko ◽  
Sergei Sazhin
Keyword(s):  
Thermal Radiation ◽  
Thermal Explosion ◽  
Radiation Effect ◽  
Fuel Droplets ◽  
Thermal Radiation Effect
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