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On the volume of fluid simulation details and droplet size distribution insider rotating packed beds

Shahab Golshan, Roshanak Rabiee, Alireza Shams, Rayane Hoballah, Priiyank Maheshwari, Rouzbeh Jafari, Jamal Chaouki, Bruno Blais

Article (2021)

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Abstract

In this research, the volume of fluid (VOF) method is used to study the hydrodynamics of rotating packed beds (RPBs). The model is validated, and grid independence analyses are performed for cases with different operating conditions. The droplet size distribution is investigated to characterize the hydrodynamics of RPBs. Droplet size distributions are compared in two-dimensional and three-dimensional simulations, and it is demonstrated that two-dimensional simulations can provide an accurate prediction while significantly reducing the significant computational cost. Radial distributions of droplet diameter in the packing region are studied, and different trends are observed at different rotational speeds (fluctuating at ω = 250 rpm, increasing–constant at ω = 500 rpm, and decreasing at higher rotational speeds). These trends are explained using the breakup and coalescence of droplets during droplet–packing and droplet–droplet collisions. Breakup, coalescence, and deposition regimes of droplets depend on the Weber, Ohnesorge, and impact parameters. We observed that with increasing rotational speed, the average droplet diameter and its standard deviation decreased, while changing the liquid flow rate did not significantly affect the average droplet diameter. It is also observed that there is a critical rotational speed (depending on the bed configuration), beyond which the average droplet size does not decrease with increasing rotational speed.

Uncontrolled Keywords

Elements, Wires, Liquids, Hydrodynamics, Mathematical methods

Additional Information: Titre du manuscrit: On the VOF simulation details and droplet size distribution inside rotating packed beds
Subjects: 1800 Chemical engineering > 1800 Chemical engineering
Department: Department of Chemical Engineering
Research Center: URPEI - Research Center in Industrial Flow Processes
Funders: CRSNG/NSERC
Grant number: RGPIN-2020-04510 Discovery Grant
PolyPublie URL: https://publications.polymtl.ca/9069/
Journal Title: Industrial & Engineering Chemistry Research (vol. 60, no. 24)
Publisher: ACS Publications
DOI: 10.1021/acs.iecr.1c01346
Official URL: https://doi.org/10.1021/acs.iecr.1c01346
Date Deposited: 12 Aug 2021 14:30
Last Modified: 27 Nov 2022 01:39
Cite in APA 7: Golshan, S., Rabiee, R., Shams, A., Hoballah, R., Maheshwari, P., Jafari, R., Chaouki, J., & Blais, B. (2021). On the volume of fluid simulation details and droplet size distribution insider rotating packed beds. Industrial & Engineering Chemistry Research, 60(24), 8888-8900. https://doi.org/10.1021/acs.iecr.1c01346

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