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- W3138928096 abstract "In this work, the numerical analysis of turbulent two-phase processes in stirred tanks and bioreactors is performed with a computational fluid dynamics (CFD) approach. The modelling of the turbulent two-phase phenomena is achieved in the context of the Reynolds Averaged Navier-Stokes (RANS) equations and the Two-Fluid Model (TFM). Different modelling strategies are studied, tested and developed to improve the prediction of mixing phenomena, interphase interactions and bio-chemical reactions in chemical and process equipment. The systems studied in this work are a dilute immiscible liquid-liquid dispersion and dense solid-liquid suspensions, both in stirred tanks of standard geometry, a gas-liquid system consisting of a dual impeller vortex ingesting fermenter for the production of biohydrogen, analyzed in two different configurations of the supports for the attached growth of biomass, and two different bioreactors, of different scale and configuration, subject to substrate concentration segregation. Purposely collected experimental data and data from the literature were extensively used to validate the numerical results and either confirmed the goodness of the models and the modelling techniques, helped the definition of the limits and the uncertainties of the model formulations or guided the development of new models.In all cases, particular attention was devoted to the precision of the numerical solution, and to the validation with experimental data to quantify the appropriateness of the models and the accuracy of the CFD predictions." @default.
- W3138928096 created "2021-03-29" @default.
- W3138928096 creator A5029837022 @default.
- W3138928096 date "2020-03-24" @default.
- W3138928096 modified "2023-09-27" @default.
- W3138928096 title "Computational Fluid Dynamics Analysis of Two-Phase Chemical and Biochemical Reactors" @default.
- W3138928096 doi "https://doi.org/10.6092/unibo/amsdottorato/9316" @default.
- W3138928096 hasPublicationYear "2020" @default.
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