Natural convection effects on TNT solidification inside a shaped charge mold

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dc.authoridLoiola, Bruna Rafaella/0000-0002-8314-7002
dc.authoridCaldeira, Aldelio/0000-0002-7261-9924
dc.authorwosidLoiola, Bruna Rafaella/R-5976-2018
dc.contributor.authorSusantez, Cigdem
dc.contributor.authorCaldeira, Aldelio B.
dc.contributor.authorLoiola, Bruna R.
dc.date.accessioned2024-06-12T11:15:24Z
dc.date.available2024-06-12T11:15:24Z
dc.date.issued2022
dc.departmentTrakya Üniversitesien_US
dc.description.abstractHigh Explosive Anti-Tank (HEAT) warheads and ammunitions are frequently produced by explosive casting inside an axis-symmetric mold with an inverted conical geometry in the basis. In order to prevent manufacturing defects, the solidification process must be controlled. In this study, a dimensionless solidification model has been proposed to investigate the heat transfer considering the natural convection inside the liquid explosive and the numerical simulations were performed by using COMSOL Multiphysics and Modeling Software, employing trinitrotoluene (TNT) thermophysical properties. The effect of three different boundary conditions on the top of the mold have been evaluated: convection, adiabatic and isothermal. It has been observed that solidification process was faster for convection case and slower for isothermal case, while an intermediary total solidification time value was found for adiabatic case. Moreover, liquid explosive was completely surrounded by solid explosive during the solidification process for convection case and also for adiabatic case through the end of the process. Otherwise, it was not observed for isothermal case. The natural convection effects promoted a vortex inside the liquid explosive, accelerating the heat transfer process. It has been concluded that isothermal mold top boundary condition should be preferred to prevent manufacturing defects, avoiding high thermal stress.(c) 2021 China Ordnance Society. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).en_US
dc.identifier.doi10.1016/j.dt.2021.07.010
dc.identifier.endpage1661en_US
dc.identifier.issn2096-3459
dc.identifier.issn2214-9147
dc.identifier.issue9en_US
dc.identifier.scopus2-s2.0-85120606678en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1653en_US
dc.identifier.urihttps://doi.org/10.1016/j.dt.2021.07.010
dc.identifier.urihttps://hdl.handle.net/20.500.14551/23919
dc.identifier.volume18en_US
dc.identifier.wosWOS:000863299600005en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherKeai Publishing Ltden_US
dc.relation.ispartofDefence Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSolidificationen_US
dc.subjectNatural Convectionen_US
dc.subjectExplosiveen_US
dc.subjectDimensionless Modelen_US
dc.subjectAnti-Tank Ammunitionen_US
dc.subjectPhase-Changeen_US
dc.subjectPorosityen_US
dc.titleNatural convection effects on TNT solidification inside a shaped charge molden_US
dc.typeArticleen_US

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