Abstract
Contact conduction heat transfer behavior in a rotary drum using the discrete element method (DEM)-based simulation codes MFIX-DEM (open-source) and EDEM (commercial) is investigated. Simulations are performed to compare the performance of open-source and commercial code models with experimental data. This study also aims to investigate the effects of particle size distribution (PSD), rotation speed, and rolling friction on overall wall–bed heat transfer using the validated codes. It is found that the variability in the PSD with same mean, μ, and standard deviation, σ, resulted in different heat transfer coefficients. Monodispersed particle beds exhibit better heat transfer when compared to polydispersed beds, because heat transfer is inhibited as the distribution broadens due to segregation. Rotation speed has minimal impact on conduction heat transfer. At lower values of rolling friction, particle circulation in the bed is enhanced and therefore better heat transfer is achieved.
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Acknowledgements
The authors are very grateful to Dr. Jordan Musser of NETL, Dr. Jean-Francois Dietiker of WVURC/NETL and Dr. Tingwen Li of AECOM/NETL for their kind help and valuable discussions. This research used resources of the National Energy Research Scientific Computing Center (NERSC), a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. This work has also used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation Grant Number ACI-1053575.
Funding
This research effort is funded by the U.S. Department of Energy’s National Energy Technology Laboratory (DOE NETL) Crosscutting Research Program Transitional Technology Development to Enable Highly Efficient Power Systems with Carbon Management initiative under award DE-FE0026393.
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Adepu, M., Chen, S., Jiao, Y. et al. Wall to particle bed contact conduction heat transfer in a rotary drum using DEM. Comp. Part. Mech. 8, 589–599 (2021). https://doi.org/10.1007/s40571-020-00356-z
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DOI: https://doi.org/10.1007/s40571-020-00356-z