Influence of a nonuniform magnetic field on the flow and heat transfer of a thermosensitive ferrofluid

Castro, Luís Henrique Fraga; Oliveira, Taygoara Felamingo de; Rosa, Adriano Possebon

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dc.contributor.author	Castro, Luís Henrique Fraga	-
dc.contributor.author	Oliveira, Taygoara Felamingo de	-
dc.contributor.author	Rosa, Adriano Possebon	-
dc.date.accessioned	2025-09-25T12:49:16Z	-
dc.date.available	2025-09-25T12:49:16Z	-
dc.date.issued	2024-10-03	-
dc.identifier.citation	CASTRO, Luís Henrique Fraga; OLIVEIRA, Taygoara Felamingo de; ROSA, Adriano Possebon.Influence of a nonuniform magnetic field on the flow and heat transfer of a thermosensitive ferrofluid. Physics of Fluids, Maryland, v. 36, n. 10, e103104, 2024. DOI: https://doi.org/10.1063/5.0228839. Disponível em: https://pubs.aip.org/aip/pof/article/36/10/103104/3315349/Influence-of-a-nonuniform-magnetic-field-on-the. Acesso em: 30 jun. 2025.	pt_BR
dc.identifier.uri	http://repositorio.unb.br/handle/10482/52511	-
dc.language.iso	eng	pt_BR
dc.publisher	AIP Publishing	pt_BR
dc.rights	Acesso Restrito	pt_BR
dc.title	Influence of a nonuniform magnetic field on the flow and heat transfer of a thermosensitive ferrofluid	pt_BR
dc.type	Artigo	pt_BR
dc.subject.keyword	Campo magnético	pt_BR
dc.subject.keyword	Ferrofluidos	pt_BR
dc.subject.keyword	Transferência de calor	pt_BR
dc.identifier.doi	https://doi.org/10.1063/5.0228839	pt_BR
dc.relation.publisherversion	https://pubs.aip.org/aip/pof/article/36/10/103104/3315349/Influence-of-a-nonuniform-magnetic-field-on-the	pt_BR
dc.description.abstract1	In this work, we numerically investigate how a nonuniform magnetic field affects the flow and heat transfer in a bottom-heated closed enclosure filled with a thermosensitive ferrofluid. Under the simultaneous action of the gravitational and external magnetic field, a complex flow develops inside the cavity. We change the intensity of the external magnetic field aiming to understand how the flow field, temperature distribution, and net heat transfer are affected. Our findings reveal that the magnetic field has a significant influence on the topology of the flow and temperature fields, consequently impacting the overall heat transfer. It is possible to use the magnetic field generated by a conducting wire to change the net heat transfer through the cavity. We found that the average Nusselt number is a growing function of the magnetic field intensity, except for a specific Rayleigh number. Furthermore, we recognize non-stationary regimes at intermediate magnetic Rayleigh numbers, associated with unstable topological transitions in the flow pattern induced by the magnetic field. Consequently, we uncover flow regimes characterized by steady boundary conditions but exhibiting periodic flow and heat transfer patterns. Additionally, we observe that the unsteady topological transitions are suppressed by high magnetic Rayleigh numbers, resulting in steady flow.	pt_BR
dc.identifier.orcid	https://orcid.org/0009-0004-5762-4700	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0003-2957-537X	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0003-3255-422X	pt_BR
dc.contributor.affiliation	University of Brasília, Energy and Environment Laboratory	pt_BR
dc.contributor.affiliation	University of Brasília, Energy and Environment Laboratory	pt_BR
dc.contributor.affiliation	University of Brasília, Energy and Environment Laboratory	pt_BR
dc.description.unidade	Faculdade de Tecnologia (FT)	pt_BR
dc.description.unidade	Departamento de Engenharia Mecânica (FT ENM)	pt_BR
dc.description.ppg	Programa de Pós-Graduação em Ciências Mecânicas	pt_BR
Collection(s) :	Artigos publicados em periódicos e afins