Irreversibility analysis of a vertical annulus using TiO2/water nanofluid with MHD flow effects

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dc.contributor.authorMahian, Omid
dc.contributor.authorPop, Ioan
dc.contributor.authorSahin, Ahmet Z.
dc.contributor.authorÖztop, Hakan Fehmi
dc.contributor.authorWongwises, Somchai
dc.date.accessioned2026-08-12T17:46:50Z
dc.date.issued2013
dc.departmentFırat Üniversitesi
dc.description.abstractIn this paper, an analytical study of the second law of thermodynamics is performed for the flow and heat transfer of TiO2/water nanofluid in a vertical annulus with isoflux walls and under the influence of magnetohydrodynamic (MHD) field. The governing equations in cylindrical coordinates are written and then simplified with reasonable assumptions. The simplified equations are solved analytically to obtain expressions for the velocity, temperature, and entropy generation distributions. The results are presented for different values of nanofluid volume fractions phi(0% <= phi <= 2%), Hartmann number M and the flow parameter Gr/Re. To calculate the thermal conductivity and viscosity of TiO2/water nanofluid, relations based on experimental data are used. Finally, using the well-known theoretical models for the thermal conductivity and viscosity, the effects of Hartmann number on the results are investigated. (C) 2013 Elsevier Ltd. All rights reserved.
dc.description.sponsorshipThailand Research Fund; National Research University Project; King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudi Arabia
dc.description.sponsorshipThe first and fifth author would like to thank the Thailand Research Fund and the National Research University Project for the support. The third author acknowledges the support of King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudi Arabia, for this work.
dc.identifier.doi10.1016/j.ijheatmasstransfer.2013.05.001
dc.identifier.endpage679
dc.identifier.issn0017-9310
dc.identifier.issn1879-2189
dc.identifier.orcid0000-0003-2648-6814
dc.identifier.orcid0000-0003-1060-6746
dc.identifier.orcid0000-0001-9996-8246
dc.identifier.scopus2-s2.0-84878382294
dc.identifier.scopusqualityQ1
dc.identifier.startpage671
dc.identifier.urihttps://doi.org/10.1016/j.ijheatmasstransfer.2013.05.001
dc.identifier.urihttps://hdl.handle.net/11508/61243
dc.identifier.volume64
dc.identifier.wosWOS:000323236900064
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofInternational Journal of Heat and Mass Transfer
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260511
dc.subjectNanofluid
dc.subjectEntropy generation
dc.subjectVertical annulus
dc.subjectMHD flow
dc.subjectAnalytical solution
dc.titleIrreversibility analysis of a vertical annulus using TiO2/water nanofluid with MHD flow effects
dc.typeArticle

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