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dc.contributor.authorZhu, G
dc.contributor.authorLi, H
dc.contributor.authorWang, Z
dc.contributor.authorZhang, T
dc.contributor.authorLiu, M
dc.date.accessioned2021-02-16T00:48:02Z
dc.date.available2021-02-16T00:48:02Z
dc.date.issued2021
dc.identifier.issn0032-5910
dc.identifier.doi10.1016/j.powtec.2020.12.042
dc.identifier.urihttp://hdl.handle.net/10072/402188
dc.description.abstractAbrasive air jet (AAJ) machining is attractive for micromachining hard and brittle materials, while it is usually a big challenge to numerically investigate the particle velocity and concentration distribution in the particle erosion process in the AAJ. In this work, a recently developed semi-resolved CFD-DEM approach which bridges the simulation gap between the resolved and unresolved CFD-DEM, is further improved to reconstruct the background information with a double cosine kernel function. The semi-resolved CFD-DEM is then employed to numerically investigate the gas-particle two-phase flow in the AAJ and numerical results show that this semi-resolved CFD-DEM is more accurate in modeling particulate flow in the fine AAJ nozzle than the conventional unresolved CFD-DEM. We further conduct mechanism investigations on the AAJ micromachining process including particle flow characteristics inside the cylindrical nozzle, velocity, and concentration distribution over the nozzle exit, which are essential jet characteristic features. We identified the particle flow patterns, analyzed the particle distribution, and its correlation with air pressure, abrasive mass flow rate, and turbulence effects. The present simulation results and analyses can be great helpful in understanding the erosion mechanism and optimizing the setting parameters to improve the cutting performance of AAJ.
dc.description.peerreviewedYes
dc.languageen
dc.publisherElsevier BV
dc.relation.ispartofpagefrom585
dc.relation.ispartofpageto600
dc.relation.ispartofjournalPowder Technology
dc.relation.ispartofvolume381
dc.subject.fieldofresearchChemical engineering
dc.subject.fieldofresearchMechanical engineering
dc.subject.fieldofresearchResources engineering and extractive metallurgy
dc.subject.fieldofresearchcode4004
dc.subject.fieldofresearchcode4017
dc.subject.fieldofresearchcode4019
dc.titleSemi-resolved CFD-DEM modeling of gas-particle two-phase flow in the micro-abrasive air jet machining
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationZhu, G; Li, H; Wang, Z; Zhang, T; Liu, M, Semi-resolved CFD-DEM modeling of gas-particle two-phase flow in the micro-abrasive air jet machining, Powder Technology, 2021, 381, pp. 585-600
dcterms.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.date.updated2021-02-16T00:45:59Z
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyright© 2021 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorLi, Huaizhong


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