Calculations of the Thermal Conductivity of Porous Materials

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In this paper, the geometrical effective thermal conductivity of porous materials is investigated based on two different approaches: the finite element method as a representative for numerical approximation methods and an analytical method for 2D homogenised models based on a solution of the respective boundary value problem. It is found that the relative conductivity is practically independent of the specific shape or topology of the inclusions. Only the morphology (closed-cell or open-cell) of the structure slightly influences the conductivity. Furthermore, it is shown that a small perturbation of the circular inclusions of 2D models increases the effective conductivity.

Info:

Periodical:

Materials Science Forum (Volumes 514-516)

Edited by:

Paula Maria Vilarinho

Pages:

754-758

DOI:

10.4028/www.scientific.net/MSF.514-516.754

Citation:

T. Fiedler et al., "Calculations of the Thermal Conductivity of Porous Materials", Materials Science Forum, Vols. 514-516, pp. 754-758, 2006

Online since:

May 2006

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Price:

$35.00

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