Abstract
This work highlights the importance of selecting an appropriate mesh element size in Computational Fluid Dynamics (CFD) modelling to balance between accuracy and computational effort, and proposes a methodology to select a suitable mesh according to three mesh quality parameters. Four meshes were selected and evaluated in single-phase and two-phase simulations of a full-scale oxidation ditch reactor. Hydrodynamic results showed the existence of heterogeneities in terms of velocity and oxygen concentration along the reactor. Experimental velocity measurements were made which provided essential information to validate the model.
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Acknowledgments
This study is part of the HADES project funded by the MCIN/AEI/https://doi.org/10.13039/501100011033 and by the European Union NextGenerationEU/PRTR fund (Code CPP2021-009097). The Hades project has the support of the Industrial Doctorates Plan of the Secretariat for Universities and Research of the Department of Enterprise and Knowledge of the Government of Catalonia.
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Vázquez, C., del Mar Micó, M., Colprim, J. (2024). Computational Fluid Dynamics (CFD) Modelling of a Full-Scale Oxidation Ditch: Suitable Mesh Selection Method and Hydrodynamic Perfomance Analysis. In: Mannina, G., Cosenza, A., Mineo, A. (eds) Resource Recovery from Wastewater Treatment. ICWRR 2024. Lecture Notes in Civil Engineering, vol 524. Springer, Cham. https://doi.org/10.1007/978-3-031-63353-9_67
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DOI: https://doi.org/10.1007/978-3-031-63353-9_67
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