Comparison of CFD-DEM and MP-PIC in the simulation of metal powder conveying for Laser Metal Deposition
Cargando...
Ficheros en el ítem
Fecha
2024
Título de la revista
ISSN de la revista
Título del volumen
Editor
OpenCFD Ltd
Resumen
Pneumatic conveying of fine powders is essential for many industrial processes, includingLaser Metal Deposition (LMD), a Direct Metal Additive Manufacturing (DMAM) technology that buildssolid objects layer-by-layer using a laser to melt metal powder. To optimize the process, it is necessaryto have a correct understanding of the powder’s behaviour under the process condition.The coupled Computational Fluid Dynamics - Discrete Element Modelling (CFD-DEM) and MultiPhase- Particle In Cell (MP-PIC) are two popular Eulerian-Lagrangian models to simulate particleladen flows. This study compares them to analyse powder behaviour in a small channel of LMD machines.Results from the two methods differ significantly, with CFD-DEM offering a more accuraterepresentation of the physical reality, while MP-PIC is more computationally efficient. The study findsthat the CFD-DEM method produces higher fluctuations in the solids flow rate due to the formationof particle clusters, while MP-PIC displays a smooth and essentially uniform flow. The results suggestthat CFD-DEM should be used for more accurate and detailed studies of solids flow rate in pneumaticconveying systems, while MP-PIC can be used for preliminary studies and design optimization.
Descripción
Materias
Citación
Pedrolli, L., Achiaga Menor, B., Martinez de Arenaza, I., & López, A. (2024). Comparison of CFD-DEM and MP-PIC in the simulation of metal powder conveying for Laser Metal Deposition. OpenFOAM® Journal, 4, 26-40. https://doi.org/10.51560/OFJ.V4.91