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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.49 [2011] >
IJPAP Vol.49(05) [May 2011] >
| Title: | Prediction of effective thermal conductivity of cellular and polymer composites |
| Authors: | Singh, Ramvir
Sharma, P K
Bhoopal, R S
Verma, L S |
| Keywords: | Effective thermal conductivity
Cellular materials
Polymer composites
Statistical mechanics |
| Issue Date: | May-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Theoretical
expression has been developed to predict effective thermal conductivity (ETC)
of cellular and polymer composites considering random flow of heat flux lines.
The concept of averaging temperature field within different phases has been
used. For heterogeneous materials, the parameter F has been introduced in place of physical porosity. Due to the
randomness of the flux lines in heterogeneous materials, the laws of
statistical mechanics have been used to derive the expression in terms of the
ratio of thermal conductivity of the constituents and the physical porosity. Expression so obtained for F is used in the model and it has been
found that the predicted results of effective thermal conductivity are quite close to the experimental values. A comparison
of the proposed relation with different models has also been made. |
| Page(s): | 344-349 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.49(05) [May 2011]
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