loading page

Segregation and intermixing in polydisperse liquid-solid fluidized beds: A multi-fluid model validation study
  • +1
  • Shashank S. Tiwari,
  • Swapnil V. Ghatage,
  • Jyeshtharaj Joshi,
  • Bo Kong
Shashank S. Tiwari
Guangdong Technion-Israel Institute of Technology

Corresponding Author:[email protected]

Author Profile
Swapnil V. Ghatage
3D Engineering Automation LLP
Author Profile
Jyeshtharaj Joshi
Institute of Chemical Technology
Author Profile
Bo Kong
Guangdong Technion-Israel Institute of Technology
Author Profile


Multifluid model (MFM) simulations have been carried out on liquid-solid fluidized beds (LSFB) consisting of binary and higher-order polydisperse particle mixtures. The role of particle-particle interactions was found to be as crucial as the drag force under laminar and homogenous LSFB flow regimes. The commonly used particle-particle closure models are designed for turbulent and heterogeneous gas-solid flow regimes and thus exhibit limited to no success when implemented for LSFB operating under laminar and homogenous conditions. A need is perceived to carry out Direct Numerical Simulations of liquid-solid flows and extract data from them to develop rational closure terms to account for the physics of LSFB. Finally, a recommendation flow regime map signifying the performance of the MFM has been proposed. This map will act as a potential guideline to identify whether or not the bed expansion characteristics of a given polydisperse LSFB can be correctly simulated using MFM closures tested.
15 Aug 2021Submitted to AIChE Journal
23 Aug 2021Submission Checks Completed
23 Aug 2021Assigned to Editor
07 Sep 2021Reviewer(s) Assigned
30 Nov 2021Editorial Decision: Revise Major
01 Feb 20221st Revision Received
02 Feb 2022Submission Checks Completed
02 Feb 2022Assigned to Editor
13 Feb 2022Reviewer(s) Assigned
27 Mar 2022Editorial Decision: Accept