A massively parallel CFD/DEM approach for reactive gas-solid flows in complex geometries using unstructured meshes
| Autor: | Olivier Simonin, Ghislain Lartigue, Yann Dufresne, Vincent Moureau |
|---|---|
| Přispěvatelé: | Complexe de recherche interprofessionnel en aérothermochimie (CORIA), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Institut de mécanique des fluides de Toulouse (IMFT), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut National des Sciences Appliquées de Rouen - INSA (FRANCE), Université de Rouen - UR (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
General Computer Science
Computer science Mécanique des fluides Unstructured meshes 02 engineering and technology Computational fluid dynamics 01 natural sciences 010305 fluids & plasmas Computational science 020401 chemical engineering 0103 physical sciences Polygon mesh Complex geometries [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] 0204 chemical engineering Massively parallel Massive parallelism Physical model business.industry General Engineering Systems modeling Particle-laden flows Discrete element method Distributed memory business CFD-DEM |
| Zdroj: | Computers and Fluids Computers and Fluids, Elsevier, 2020, 198, pp.104402. ⟨10.1016/j.compfluid.2019.104402⟩ |
| ISSN: | 0045-7930 |
| DOI: | 10.1016/j.compfluid.2019.104402⟩ |
| Popis: | International audience; Despite having been thoroughly described in various simple configurations, the study of gas-fluidized systems in a CFD/DEM (Discrete Element Method) formalism becomes challenging as the computational domain size and complexity rise. For a while, attention has been drawn to the design of physical models for fluid-particles interactions, but a recent challenge for numerical tools has been to take advantage from the increasing power of distributed memory machines, in order to simulate realistic industrial systems. Furthermore, unstructured meshes are appealing for their ability to describe complex geometries and to perform local refinements, but lead to significant coding effort involving sophisticated algorithm. In a attempt to design a numerical tool able to cope with these limitations, the methodology presented here proposes an efficient non-blocking algorithm for massive parallelism management, as well as an exhaustive contact scheme to deal with arbitrarily complex geometries, all to be operated on unstructured meshes. The aim is two-fold: (i) To assist larger scale codes in their endeavor to close the solid stress tensor for example, (ii) to pave the way for complex industrial-scale systems modeling using DEM. The methodology is successfully applied to a pilot-scale fluidized bed gathering 9.6M spherical particles and enables to reach interesting physical times using reasonable computational resources. |
| Databáze: | OpenAIRE |
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