Heat transfer through fibrous assemblies by fractal method (Conference Paper)

摘要

Fractal theory has been proved effective to characterize the complex pore structure. In this article, the fractal method is utilized to study the structure property of fibrous assemblies. The box dimension parameter is applied to characterize the pore structure of fibrous assemblies by analyzing the electronic scanning microscope images of the fibrous assemblies. Furthermore, a fractal model for predicting effective heat conductivity is established. Experiment is conducted to verify the model, and good agreement is found between the experimental and theoretical results. The fractal model is also compared with the previous models for predicating heat conductivity, and the former is proved to be more accurate.