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dc.contributor.authorGuilherme, Arthur Leitept_BR
dc.contributor.authorAbdo, Rodrigo Figueiredopt_BR
dc.contributor.authorCunha, Lucas Hildebrand Pires dapt_BR
dc.contributor.authorSiqueira, Ivan R.pt_BR
dc.contributor.authorThompson, Roney L.pt_BR
dc.contributor.authorOliveira, Taygoara Felamingo dept_BR
dc.date.accessioned2026-08-18T13:49:35Z-
dc.date.available2026-08-18T13:49:35Z-
dc.date.issued2025-10-1pt_BR
dc.identifier.citationGUILHERME, Arthur L. et al. Field-induced control of the breakup of ferrofluid droplets in planar extensional and simple shear flows. Physics of Fluids, [S. l.], v. 37, n. 10, 2025. DOI: https://doi.org/10.1063/5.0288138. Disponível em: https://pubs.aip.org/aip/pof/article/37/10/103305/3365769/Field-induced-control-of-the-breakup-of-ferrofluid. Acesso em: 18 ago. 2026.pt_BR
dc.identifier.urihttps://doi.org/10.1063/5.0288138pt_BR
dc.identifier.urihttp://repositorio.unb.br/handle/10482/55688-
dc.language.isoeng-
dc.publisherAIP Publishingpt_BR
dc.rightsAcesso Restritopt_BR
dc.titleField-induced control of the breakup of ferrofluid droplets in planar extensional and simple shear flowspt_BR
dc.typeArtigopt_BR
dc.subject.keywordCampos magnéticospt_BR
dc.subject.keywordFerrofluidospt_BR
dc.subject.keywordEquações de Navier-Stokespt_BR
dc.subject.keywordMaxwell, Equações dept_BR
dc.subject.keywordDinâmica dos fluidospt_BR
dc.identifier.doihttps://doi.org/10.1063/5.0288138pt_BR
dc.relation.publisherversionhttps://pubs.aip.org/aip/pof/article/37/10/103305/3365769/Field-induced-control-of-the-breakup-of-ferrofluid-
dc.description.abstract1This study investigates the breakup of ferrofluid droplets in both planar extensional and simple shear flows under the influence of external magnetic fields. Using a three-dimensional model, we analyze the impact of the external field configuration on the minimum strain rate required to induce droplet breakup, covering a wide range of droplet-to-ambient liquid viscosity ratios. The methodology involves solving the incompressible Navier–Stokes equations augmented by capillary and magnetic terms, Maxwell's equations at the magnetostatic limit, and an evolution equation for the level set function used to capture the droplet interface. In planar extensional flows, we find that magnetic fields applied in the extension direction facilitate droplet breakup, while fields in the compression and neutral directions have the opposite effect. In simple shear flows, we find that magnetic fields applied in either the velocity or vorticity directions prevent droplet breakup. In contrast, we find that magnetic fields applied in the velocity gradient direction induce droplet breakup. Importantly, we show that magnetic fields in the velocity gradient direction can be used to break very viscous droplets, highlighting a strong contrast with the standard case of purely viscous droplets well established in the literature. As importantly, we report a unique tumbling-like dynamics for high viscosity droplets with S- and N-like shapes that periodically return to the initial spherical shape, further underscoring the complex coupling between viscous, capillary, and magnetic effects in magnetic multiphase systems.pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-1700-4521pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7232-4704pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9613-0659pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-5952-6646pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-3642-0766pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-2957-537Xpt_BR
dc.contributor.affiliationUniversity of Brasília, Department of Mechanical Engineering, Laboratory of Energy and Environmentpt_BR
dc.contributor.affiliationFederal Institute of Brasília, Laboratory of Processing and Intelligent Recognition Systems and Analytical Methodspt_BR
dc.contributor.affiliationGeorgetown University, Institute for Soft Matter Synthesis and Metrologypt_BR
dc.contributor.affiliationPontifícia Universidade Católica do Rio de Janeiro, Department of Mechanical Engineeringpt_BR
dc.contributor.affiliationUniversidade Federal do Rio de Janeiro, Department of Mechanical Engineeringpt_BR
dc.contributor.affiliationUniversity of Brasília, Department of Mechanical Engineering, Laboratory of Energy and Environmentpt_BR
dc.description.unidadeFaculdade de Tecnologia (FT)-
dc.description.unidadeDepartamento de Engenharia Mecânica (FT ENM)-
dc.description.ppgPrograma de Pós-Graduação em Ciências Mecânicas-
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