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Experimental characterization and CFD simulation of gas maldistribution in turbulent fluidization of Group A particles |
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| Institution: | 1. Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Piazzale Vincenzo Tecchio 80, 80125, Napoli, Italy;2. IFP Energies nouvelles, Rond-point de l''échangeur de Solaize BP 3, 69360, Solaize, France;3. 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;1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, 100190, China;2. University of Chinese Academy of Sciences, Beijing, 100049, China;3. Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Dalian, 116023, China;1. School of Chemical Engineering, Northwest University, Xi''an 710069, China;2. School of Chemistry and Chemical Engineering, Yan’an University, Yan’an 716000, China;3. State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, P.O. Box 353, Beijing 100190, China |
| 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. |
| Keywords: | Characterization of multiphase reactors Fluidized bed Turbulent Gas distribution Jet Optical probe CFD simulations |
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