Modeling Heat Transfer in Cylindrical Batteries: Spiral-Based Thermal Conductivity Tensor

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dc.contributor.authorHvožďa, Jiřícs
dc.contributor.authorBoháček, Jancs
dc.contributor.authorVakhrushev, Alexandercs
dc.contributor.authorKarimi-Sibaki, Ebrahimcs
dc.coverage.issue1cs
dc.coverage.volume12cs
dc.date.accessioned2025-04-04T11:56:42Z
dc.date.available2025-04-04T11:56:42Z
dc.date.issued2025-01-30cs
dc.description.abstractThis study investigates the importance of considering the well-known spiral structure of cylindrical batteries in numerical models of heat transfer. Such models typically simplify the internal geometry by a concentric layout of electrodes and separators, resulting in an effective orthotropic thermal conductivity with radial, tangential, and axial components defined in a cylindrical coordinate system. However, the actual spiral structure suggests radius-dependent thermal conductivity. In this study, several thermal simulations were performed, comparing thermal fields obtained with the commonly used cylindrical orthotropy and a more realistic spiral structure. The results show that the spiral structure has a negligible effect on the overall temperature distribution for configurations with dense spirals and higher radial thermal conductivity (2 W·m1·K1). However, for lower radial thermal conductivity (0.2 W·m1·K1), considerable errors were observed even for dense spirals. These findings emphasize the need for studies to justify simplifications made in the thermal conductivity tensor.en
dc.formattextcs
dc.format.extent23-28cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationJournal of Fluid Flow, Heat and Mass Transfer. 2025, vol. 12, issue 1, p. 23-28.en
dc.identifier.doi10.11159/jffhmt.2025.003cs
dc.identifier.issn2368-6111cs
dc.identifier.orcid0000-0002-4444-4485cs
dc.identifier.orcid0000-0003-3319-4254cs
dc.identifier.other196473cs
dc.identifier.researcheridAAQ-1466-2021cs
dc.identifier.researcheridC-2078-2018cs
dc.identifier.scopus57222749606cs
dc.identifier.scopus55213548700cs
dc.identifier.urihttps://hdl.handle.net/11012/250774
dc.language.isoencs
dc.publisherAvestia Publishingcs
dc.relation.ispartofJournal of Fluid Flow, Heat and Mass Transfercs
dc.relation.urihttps://jffhmt.avestia.com/2025/PDF/003.pdfcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2368-6111/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectBattery thermal management systemsen
dc.subjectLi-Ion cylindrical batteriesen
dc.subjectorthotropic thermal conductivityen
dc.subjectspiral structure.en
dc.titleModeling Heat Transfer in Cylindrical Batteries: Spiral-Based Thermal Conductivity Tensoren
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.grantNumberinfo:eu-repo/grantAgreement/MSM/EH/EH22_008/0004617cs
sync.item.dbidVAV-196473en
sync.item.dbtypeVAVen
sync.item.insts2025.04.04 13:56:42en
sync.item.modts2025.04.03 13:32:09en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Laboratoř přenosu tepla a prouděnícs
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