CFD-DEM Modelling of Multiphase Flow

A special issue of Fluids (ISSN 2311-5521). This special issue belongs to the section "Mathematical and Computational Fluid Mechanics".

Deadline for manuscript submissions: closed (31 August 2024) | Viewed by 1949

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School of Mechanical and Mechatronic Engineering, University of Technology Sydney (UTS), 15 Broadway, Ultimo, NSW 2007, Australia
Interests: heat wave; bush fire and air-quality; particle transport, and deposition; human lung modelling; microfluidics; CFD; heat and mass transfer
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Dear Colleague,

Fluid flow and particle transport have attracted the attention of the researchers due to its widespread applications in engineering systems as well as in other applications. There are many possible applications for gas–liquid, liquid–liquid, gas–solid, and liquid–solid flow regimes. Slug flow, particle-laden flow, slurry flow, fluidized beds, and sedimentation are a few examples of multiphase flow. Many real-life applications, including spray drying, inertial separation, particle transport in the lung, cyclone separatord, liquid fuel, and aerosol dispersion, are classic examples of multiphase flow. A precise understanding of multiphase flow modelling is important for engineering systems and device optimization. This Special Issue is open to any subject area related to fluid flow and particle transport modelling.

Dr. Saidul Islam
Guest Editor

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Keywords

  • fluid flow
  • particle transport
  • human lung modelling
  • particle flow and heat transfer
  • two-phase heat transfer
  • boiling
  • evaporation
  • microfluidics
  • nanofluidics
  • phase change
  • condensation
  • multiphase flow
  • CFD
  • DEM
  • particle-laden flow
  • machine learning and particle flow
  • fluidized bed
  • microfluidic cell separation
  • porous media
  • heat transfer
  • granular flow
  • other flows
  • particle dispersion and segregation
  • particle technology

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Published Papers (1 paper)

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Research

23 pages, 8270 KiB  
Article
Numerical Analysis of Multi-Particulate Flow Behaviour in CFB Riser Coupled with a Kinetic Theory
by Fardausur Rahaman, Abd Alhamid Rafea Sarhan and Jamal Naser
Fluids 2023, 8(9), 257; https://doi.org/10.3390/fluids8090257 - 21 Sep 2023
Viewed by 1272
Abstract
In this work, a three-dimensional CFD model for the gas–solid flow of two different particle sizes in a CFB riser coupled with a kinetic theory (KT) has been developed. The properties of the solid phases are calculated using the proposed multi-particle kinetic theory. [...] Read more.
In this work, a three-dimensional CFD model for the gas–solid flow of two different particle sizes in a CFB riser coupled with a kinetic theory (KT) has been developed. The properties of the solid phases are calculated using the proposed multi-particle kinetic theory. The CFD model is implemented in the commercial CFD software CFX4.4. In the current model, one gas phase and two solid phases are used. However, the model is generalised for one carrier phase and N number of solid phases to enable a realistic particle size distribution in the system. The momentum, volume fraction and granular temperature equations are solved for each individual solid phase and implemented into the CFD model through user-defined functions (UDFs). The k-ε turbulence model is used in simulating the circulating fluidised bed model. For verification, simulation results obtained with the new KT model were compared with experimental data, and then the model was used for further analysis. It was found that the proposed multi-particle model can be used to calculate the properties of gas–solid systems with particles of different sizes and/or densities, removing the assumptions of previous models that required all the particles to be of an equal mass, size and density. Full article
(This article belongs to the Special Issue CFD-DEM Modelling of Multiphase Flow)
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