Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
658087 | International Journal of Heat and Mass Transfer | 2014 | 4 Pages |
Abstract
A novel effective medium theory was proposed to model the thermal conductivity of porous materials. In this theory, phases (or components) are treated as small spheres dispersing into an assumed uniform medium with the thermal conductivity km. A simple algebraic expression for the thermal conductivity based on this theory was derived, in which each has a distinct physical basis. The expression can unify five basic structural models (Series, Parallel, two forms of Maxwell–Eucken, effective medium theory) through variations of km. Furthermore, the feasibility of the model was evaluated using the experimental data from previous literatures and those calculated by this model.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Lunlun Gong, Yonghong Wang, Xudong Cheng, Ruifang Zhang, Heping Zhang,