Theoretical study of the effective thermal conductivity of graphite foam based on a unit cell model

2011 ◽  
Vol 54 (25-26) ◽  
pp. 5491-5496 ◽  
Author(s):  
K.C. Leong ◽  
H.Y. Li
Keyword(s):  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Theoretical Study ◽  
Cell Model ◽  
Unit Cell ◽  
Unit Cell Model ◽  
Graphite Foam

An Analytical Unit Cell Model for the Effective Thermal Conductivity of High Porosity Open-Cell Metal Foams

2014 ◽  
Vol 102 (3) ◽  
pp. 403-426 ◽  
Author(s):  
Xiao Hu Yang ◽  
Jia Xi Bai ◽  
Hong Bin Yan ◽  
Jiu Jie Kuang ◽  
Tian Jian Lu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Cell Model ◽  
Metal Foams ◽  
Unit Cell ◽  
High Porosity ◽  
Unit Cell Model ◽  
Open Cell

Influence of Some Parameters on Effective Thermal Conductivity of Nano-Porous Aerogel Super Insulator

2005 ◽  
Author(s):  
Xinxin Zhang ◽  
Gaosheng Wei ◽  
Fan Yu
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Elevated Temperature ◽  
Porous Structure ◽  
Effective Thermal Conductivity ◽  
Cell Model ◽  
High Specific Surface Area ◽  
Unit Cell ◽  
Infrared Light ◽  
Key Factors

Based on the open-cell nano-porous structure features, a cubic array of nano-spheres unit cell model describing the coupled conduction of gas and solid in aerogel super insulator is developed. By one-dimensional heat conduction analysis in the unit cell, the effective thermal conductivity expression is obtained. The results show that the model matches well with the experimental data and nano-porous structure, nanometer size effect of solids as well as the very high specific surface area are the key factors make aerogel have very low thermal conductivity. There exists an optimal density value where the thermal conductivity of aerogel is minimum. Thermal radiative heat transfer is the dominating heat transfer mechanism of aerogel at an elevated temperature. It can decrease the thermal conductivity value of aerogel effectively at an elevated temperature by doping carbon or other matters which can strongly absorb infrared light at 3∼8 μm.

A two-dimensional analytical unit cell model for redox flow battery evaluation and optimization

2021 ◽  
Vol 506 ◽  
pp. 230192
Author(s):  
Yunxiang Chen ◽  
Jie Bao ◽  
Zhijie Xu ◽  
Peiyuan Gao ◽  
Litao Yan ◽  
...  
Keyword(s):  
Cell Model ◽  
Unit Cell ◽  
Two Dimensional ◽  
Redox Flow Battery ◽  
Unit Cell Model ◽  
Flow Battery

Meshfree Continuum Damage Mechanics Modelling for 3D Orthogonal Woven Composites

2011 ◽  
Vol 488-489 ◽  
pp. 759-762
Author(s):  
L.Y. Li ◽  
M.H. Aliabadi ◽  
Pi Hua Wen
Keyword(s):  
Damage Mechanics ◽  
Shape Function ◽  
Cell Model ◽  
Continuum Damage Mechanics ◽  
Unit Cell ◽  
Woven Composites ◽  
Continuum Damage ◽  
Unit Cell Model ◽  
Cell Models ◽  
3D Orthogonal Woven

A Meshfree approach for continuum damage modeling of 3D orthogonal woven composites is presented. Two different shape function constructions, Radial basis (RB) function and Moving kriging (MK) interpolation, are utilized corresponding with Galerkin method in the Meshfree approach. The failure of two different unit cell models, straight-edge and smooth fabric unit cell model respectively, is compared.

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