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The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering
May 13-17, 2007 - Vancouver, Canada
| Editors: |
Franco Berruti, The University of Western Ontario, London, Canada
Xiaotao (Tony) Bi, The University of British Columbia, Vancouver, Canada
Todd Pugsley, University of Saskatchewan, Saskatoon, Saskatchewan, Canada |
The articles for these proceedings are peer-reviewed.
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Analysis of Heat Transfer between Two Particles for DEM simulations
Kenya Kuwagi, Okayama University of Science
Muhammad Arif Bin Mokhtar, Okayama University of Science
Toshihiro Takami, Okayama University of Science
Masayuki Horio, Tokyo University of Agriculture and Technology
ABSTRACT:
The purpose of the present study was to develop a model of heat transfer between
particles that can be incorporated into the discrete element method (DEM). The flow
around a particle was measured by particle imaging velocimetry (PIV) and the
temperature of the particle was measured using a thermocouple and an infrared
camera. The experimental data of heat transfer were classified according to the heat
transfer mechanism, namely convection, conduction and contact. These values for
heat transfer were compared with those calculated using previously derived
estimation equations. From these results, we adopted the thermal contact resistance
model, which is related to the surface roughness and contact force. Experiments
were also carried out to examine the validity of the model. The heat transfer
increased with as the surface roughness increased. This is a not general trend
because a large surface roughness causes a large thermal resistance, resulting in a
small heat transfer. This trend is considered to be due to the increase in the contact
area that accompanies an increase in surface roughness. The contact heat transfer
calculated by considering the effect of the surface roughness on the contact area
was found to show better agreement with the experimentally obtained values.
Kenya Kuwagi, Muhammad Arif Bin Mokhtar, Toshihiro Takami, and Masayuki Horio, "Analysis of Heat Transfer between Two Particles for DEM simulations" in "The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering", Franco Berruti, The University of Western Ontario, London, Canada
Xiaotao (Tony) Bi, The University of British Columbia, Vancouver, Canada
Todd Pugsley, University of Saskatchewan, Saskatoon, Saskatchewan, Canada Eds, ECI
Symposium Series, Volume RP4 (2007). http://services.bepress.com/eci/fluidization_xii/28
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