Modeling the effective thermal conductivity for disperse systems with high solid mass fractions. (June 2016)

• Record Type: Journal Article
• Authors: Pan, Liao; Wang, Jun; Lu, Lixin; Qiu, Xiaolin
• Is Part Of: International journal of heat and mass transfer. Volume 97(2016:Jun.)
• Page Start: 719
• Page End: 724
• Publication Date: 2016-06
• Subjects: Effective thermal conductivity -- Models -- Fractal theory -- Percolation theory -- Disperse system; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2016.02.062
• Languages: English
• ISSNs: 0017-9310

Abstract

Highlights: A model was proposed for calculating the thermal conductivity of disperse systems. The presented model is in good agreement with the experimental results. The presented model provides a new basic structural models of disperse systems. Abstract: An analytical model was presented for calculating the effective thermal conductivity for disperse systems based on fractal theory and percolation theory. The shortcomings of previous models for the high mass fraction of solid particles can be overcome by the recent model. Experiments were conducted on liquid phase mixed aluminum powder, copper powder and graphite powder, and the experimental results were compared with the model results. The results indicate that the proposed model is in good agreement with the experimental results, whereas the Maxwell–Eucken model deviates from the test results at a high mass fraction. The new model also provides more structural models using the modeling procedure previously proposed by authors.