KINETIC THEORY ANALYSIS OF THERMAL CONDUCTIVITY IN GRANULAR MATERIAL FLOWS

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Abstract

The effective thermal conductivity is developed by employing the dense-gas kinetic theory. The free path used in the theory varies with the particle velocity. The analytical results can be used for the whole range of the product of Biot number and Fourier number provided that the Biot number is less than 0.1. For the very small Biot-Fourier numbers, the conductivities are found to increase with the particle diameters and the square root of granular temperatures. For the limit of very large Biot-Fourier numbers, the two effective thermal conductivities are found to be linearly proportional to the granular temperature.

Original languageEnglish
Title of host publicationHeat Transfer
Subtitle of host publicationVolume 1 � Heat Transfer in Flowing Systems
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages269-275
Number of pages7
ISBN (Electronic)9780791826706
DOIs
StatePublished - 1998
EventASME 1998 International Mechanical Engineering Congress and Exposition, IMECE 1998 - Anaheim, United States
Duration: 15 Nov 199820 Nov 1998

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume1998-M

Conference

ConferenceASME 1998 International Mechanical Engineering Congress and Exposition, IMECE 1998
Country/TerritoryUnited States
CityAnaheim
Period15/11/9820/11/98

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