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Author:

Jiang, Ming (Jiang, Ming.) | Zhang, Yu (Zhang, Yu.) | Yu, Yaxiong (Yu, Yaxiong.) | Zhou, Qiang (Zhou, Qiang.)

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Abstract:

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.

Keyword:

Drag Fluidization Fluidized beds Two phase flow

Author Community:

  • [ 1 ] [Jiang, Ming]School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 2 ] [Zhang, Yu]School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 3 ] [Yu, Yaxiong]School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 4 ] [Zhou, Qiang]School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 5 ] [Zhou, Qiang]State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an; 710049, China

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Source :

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

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