Optical particle yracking in the pneumatic conveying of metal powders through a thin capillary pipe

dc.contributor.authorPedrolli, Lorenzo
dc.contributor.authorFraccarollo, Luigi
dc.contributor.authorAchiaga, Beatriz
dc.contributor.authorLópez García, Alejandro
dc.date.accessioned2024-11-06T10:51:17Z
dc.date.available2024-11-06T10:51:17Z
dc.date.issued2024-10-03
dc.date.updated2024-11-06T10:51:17Z
dc.description.abstractDirected Energy Deposition (DED) processes necessitate a consistent material flow to the melt pool, typically achieved through pneumatic conveying of metal powder via thin pipes. This study aims to record and analyze the multiphase fluid–solid flow. An experimental setup utilizing a high-speed camera and specialized optics was constructed, and the flow through thin transparent pipes was recorded. The resulting information was analyzed and compared with coupled Computational Fluid Dynamics-Discrete Element Modeling (CFD-DEM) simulations, with special attention to the solids flow fluctuations. The proposed methodology shows a significant improvement in accuracy and reliability over existing approaches, particularly in capturing flow rate fluctuations and particle velocity distributions in small-scale systems. Moreover, it allows for accurately analyzing Particle Size Distribution (PSD) in the same setup. This paper details the experimental design, video analysis using particle tracking, and a novel method for deriving volumetric concentrations and flow rate from flat images. The findings confirm the accuracy of the CFD-DEM simulations and provide insights into the dynamics of pneumatic conveying and individual particle movement, with the potential to improve DED efficiency by reducing variability in material deposition rates.en
dc.description.sponsorshipThis study received financial support from the Basque Government through the Research Group program IT1507-22. This project has received funding from the European Union\u2019s Horizon 2020 research and innovation programme under the Marie Sk\u0142odowska-Curie grant agreement No. 847624. In addition, a number of institutions back and co-finance this projecten
dc.identifier.citationPedrolli, L., Fraccarollo, L., Achiaga, B., & Lopez, A. (2024). Optical Particle Tracking in the Pneumatic Conveying of Metal Powders through a Thin Capillary Pipe. Technologies, 12(10). https://doi.org/10.3390/TECHNOLOGIES12100191
dc.identifier.doi10.3390/TECHNOLOGIES12100191
dc.identifier.issn2227-7080
dc.identifier.urihttp://hdl.handle.net/20.500.14454/1666
dc.language.isoeng
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rights© 2024 by the authors
dc.subject.otherFlow irregularities
dc.subject.otherMeasurement
dc.subject.otherParticle tracking
dc.subject.otherPneumatic conveying
dc.titleOptical particle yracking in the pneumatic conveying of metal powders through a thin capillary pipeen
dc.typejournal article
dcterms.accessRightsopen access
oaire.citation.issue10
oaire.citation.titleTechnologies
oaire.citation.volume12
oaire.licenseConditionhttps://creativecommons.org/licenses/by/4.0/
oaire.versionVoR
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