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CFD-DEM Fluidized Bed Drying Study Using a Coarse-Graining Technique.

M J A de Munck¹, E A J F Peters¹, J A M Kuipers¹

¹Multiphase Reactors Group, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands.

Industrial & Engineering Chemistry Research

|December 11, 2023

Summary

This summary is machine-generated.

Coarse-grained computational fluid dynamics-discrete element method (CFD-DEM) modeling enables larger fluidized bed simulations for industrial drying. This approach accurately captures particle temperature, density, and drying performance (Sherwood number).

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Area of Science:

Chemical Engineering
Particle Technology
Computational Science

Background:

Fluidized beds are widely used in industrial drying processes.
Computational fluid dynamics-discrete element method (CFD-DEM) enhances understanding of solids drying but faces computational limitations for large systems.

Purpose of the Study:

To investigate the application of coarse-grained CFD-DEM scaling laws for simulating fluidized bed solids drying.
To assess the computational efficiency and accuracy of coarse-graining for larger fluidized bed systems.

Main Methods:

Implementation of coarse-graining CFD-DEM scaling laws.
Simulation of fluidized beds under three different superficial gas velocities.
Analysis of particle temperature, density, and Sherwood number.

Main Results:

Accurate description of particle temperature and density was achieved.
The Sherwood number, a key indicator of drying performance, was well-captured by the coarse-graining simulations.
Coarse-graining significantly reduces computational cost, enabling larger system simulations.

Conclusions:

Coarse-grained CFD-DEM is a viable and accurate method for simulating industrial fluidized bed drying.
This approach overcomes computational limitations, allowing for the study of larger and more complex drying systems.
The method provides reliable predictions of drying performance metrics like the Sherwood number.