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A scale-independent modeling method for filtered drag force is proposed for coarse-grid simulation of fluidized gas-solid flows based on the fine-grid data generated using kinetic theory-based two-fluid method in periodic sedimentation systems. In the modeling process, the filtered solid volume fraction at a larger scale whose side length is three times of the filter size is introduced as a new marker. New developed closures show an excellent performance in a priori test, and exhibit a fairly good agreement with the fine-grid data and the experimental data in a posteriori test for three typical fluidized regimes including bubbling, turbulent and fast fluidized beds. Furthermore, the available correction methods to consider the effect of the material properties via adding a multiplicative factor are tested. The results show that these correction methods are not suitable for the considered cases. © 2021 Elsevier B.V.
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Powder Technology
ISSN: 0032-5910
Year: 2021
Volume: 394
Page: 1050-1076
5 . 1 3 4
JCR@2020
ESI Discipline: CHEMISTRY;
ESI HC Threshold:32
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 3
SCOPUS Cited Count: 20
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1