Experimental characterization and CFD simulation of gas maldistribution in turbulent fluidization of Group A particles--颗粒学报PARTICUOLOGY

Troiano, M., Amblard, B., Tebianian, S., Solimene, R., Salatino, P., & Gauthier, T. (2023). Experimental characterization and CFD simulation of gas maldistribution in turbulent fluidization of Group A particles. Particuology, 82, 192-203. https://doi.org/10.1016/j.partic.2023.01.015

Experimental characterization and CFD simulation of gas maldistribution in turbulent fluidization of Group A particles

Maurizio Troiano ^a, Benjamin Amblard ^b *, Sina Tebianian ^b, Roberto Solimene ^c, Piero Salatino ^a, Thierry Gauthier ^b

a Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Piazzale Vincenzo Tecchio 80, 80125, Napoli, Italy
b IFP Energies nouvelles, Rond-point de l'échangeur de Solaize BP 3, 69360, Solaize, France
c Istituto di Scienze e Tecnologie per l’Energia e la Mobilità Sostenibili (STEMS), Consiglio Nazionale delle Ricerche (CNR), Piazzale Vincenzo Tecchio 80, 80125, Napoli, Italy

10.1016/j.partic.2023.01.015 Get rights and content

Volume 82, November 2023, Pages 192-203

Received 18 November 2022, Revised 26 December 2022, Accepted 30 January 2023, Available online 11 February 2023, Version of Record 24 February 2023.

E-mail: benjamin.amblard@ifpen.fr

Highlights

• Characterization of a Geldart Group A turbulent fluidized bed with optical probes.

• Characterization of different gas injection configurations.

• Measurements of local and global solid volume fractions.

• Comparison of experimental results with CFD simulations using the MP-PIC approach.

Abstract

The study presented hereby investigates experimentally and with CFD simulations the gas distribution effect on the hydrodynamic of a Geldart Group A turbulent fluidized bed. Experiments were carried out on a cold flow fluidized bed column with an even and uneven gas distribution. Local solid volume fraction profiles were measured using optical probes at different bed heights and along two radial directions. Optical probe measurements allow catching a clear hydrodynamic difference between both even and uneven gas distributions. These results were then used to assess CFD simulations with the code Barracuda™ (MP-PIC approach). It is noteworthy that the choice of drag correlation and boundary conditions strongly influences the agreement between the experimental and CFD results. Once the correct parameters are chosen, CFD simulations captured the effect of gas distribution changes.

Graphical abstract

Keywords

Characterization of multiphase reactors; Fluidized bedTurbulent; Gas distribution; Jet; Optical probe; CFD simulations

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