Abstract
Packed beds are a versatile workhorse in chemical industry. In this study, Pore Network Model (PNM) and Particle-Resolved Computational Fluid Dynamics (PR-CFD) are employed to simulate purely mechanical solute dispersion, i.e. excluding diffusion, in such packed bed reactors. Our study assesses the changes in flow patterns and mixing effects for these two methods, by examining various geometric configurations (the ratio of the column diameter to particle diameter is 4.2, 5.25, and 7). The PNM shows to match best with the PR-CFD results for the most homogeneous packing, i.e. the largest column-to-particle diameter ratio. While the PNM on pore-level produces good results, it cannot capture all local phenomena, such as Taylor or boundary-layer dispersion, resulting in an underprediction of the dispersion.
Original language | English |
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Article number | 126630 |
Number of pages | 16 |
Journal | International Journal of Heat and Mass Transfer |
Volume | 240 |
Early online date | 4 Jan 2025 |
DOIs | |
Publication status | E-pub ahead of print - 4 Jan 2025 |
Bibliographical note
Publisher Copyright:© 2024 The Authors
Keywords
- Column-to-particle diameter ratio
- Dispersion
- Packed bed reactors
- Particle-resolved computational fluid dynamics
- Pore network modeling