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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.42 [2004] >
IJPAP Vol.42(08) [August 2004] >
| Title: | Effective thermal conductivity of two-phase systems with cylindrical inclusions |
| Authors: | Jagjiwanram
Singh, Ramvir |
| Keywords: | Correction term
Cylindrical inclusions
Effective thermal conductivity
Real two-phase systems
Unit cells |
| Issue Date: | Aug-2004 |
| Publisher: | CSIR |
| IPC Code: | G 01 N 25/18 |
| Abstract: | A theoretical model is presented to predict effective thermal
conductivity of real two-phase materials from the values of thermal
conductivity of the constituent phases and their volume fractions. Two-phase
materials have been assumed to contain cylindrical particles arranged in a
regular three-dimensional cubic geometry. The arrangement has been divided into
unit cells, each of which contains a cylinder. The resistor model has been
applied to determine the effective thermal conductivity (ETC) of the unit cell.
A porosity correction term F is introduced in order to incorporate
varying individual geometries and non-linear flow of heat flux lines generated
by the difference in thermal conductivities of constituent phases. Theoretical
calculations of the ETC have been carried out on a large number of samples and
comparisons have been made with other models and experimental values cited in
the literature. The values predicted by the proposed model are in close
agreement with experimental values and more accurate than those obtained from
existing models. |
| Page(s): | 600-609 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.42(08) [August 2004]
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