Study of Heat Flow through Highly Porous Heat Insulators
Samir Roy, S. Sundar · Studies in Applied Mathematics · 2006
A comprehensive study is done to model flow of heat through heat insulators based on materials with high gas content such as solidified foams (e.g., eXtruded PolyStyrene foams, Expanded PolyStyrene foam), cellular glass, etc. The actual internal cell‐like structure of such an insulator is replicated by regularly shaped gas pockets, which are separated from each other by thin rims of solid materials. The first model focuses on heat flow across the insulator caused by conduction and convection. Subsequently, the effect of radiation is also studied. Several numerical results are presented and computational results are compared with experimentally measured data.