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Unsteady Heat Conduction in Granular Materials

Published online by Cambridge University Press:  01 February 2011

Watson L. Vargas  and
Joseph J. McCarthy
Watson L. Vargas
Affiliation:
Department of Chemical and Petroleum Engineering, University of Pittsburgh Pittsburgh, PA 15261, U.S.A.
Joseph J. McCarthy
Affiliation:
Department of Chemical and Petroleum Engineering, University of Pittsburgh Pittsburgh, PA 15261, U.S.A.
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Abstract

Heat transfer in granular materials impacts a variety of industrial applications, such as calcination, drying kilns, packed bed and multiphase reactors, etc. and may yield insight into the thermal response of some porous materials (in combustion synthesis or sintering, for example). In a dense bed of granular material, conduction occurs almost exclusively through the particle-particle contacts over a wide range of conditions. We have developed a novel Thermal Particle Dynamics (TPD) Simulation technique which incorporates both contact mechanics and contact conductance theories in order to model the dynamics of flow and heat conduction through granular materials. This model is uniquely suited to studying the effects of microstructure and flow on the dynamics of heat conduction in particulate materials. In this paper, we present experimental as well as numerical results of transient heat conduction through a bed of cylinders.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 627: Symposium BB – The Granular State , 2000 , BB3.9
Copyright
Copyright © Materials Research Society 2000

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