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dc.contributor.authorTao, Hai
dc.contributor.authorAlawi, Omer A.
dc.contributor.authorHussein, Omar A.
dc.contributor.authorAhmed, Waqar
dc.contributor.authorAbdelrazek, Ali H.
dc.contributor.authorHomod, Raad Z.
dc.contributor.authorEltaweel, Mahmoud
dc.contributor.authorFalah, Mayadah W.
dc.contributor.authorAl-Ansari, Nadhir
dc.contributor.authorYaseen, Zaher Mundher
dc.date.accessioned2022-10-24T12:00:06Z
dc.date.available2022-10-24T12:00:06Z
dc.date.issued2022-10-21
dc.identifier.citationTao , H , Alawi , O A , Hussein , O A , Ahmed , W , Abdelrazek , A H , Homod , R Z , Eltaweel , M , Falah , M W , Al-Ansari , N & Yaseen , Z M 2022 , ' Thermohydraulic analysis of covalent and noncovalent functionalized graphene nanoplatelets in circular tube fitted with turbulators ' , Scientific Reports , vol. 12 , no. 1 , 17710 . https://doi.org/10.1038/s41598-022-22315-9
dc.identifier.issn2045-2322
dc.identifier.otherPURE: 32052140
dc.identifier.otherPURE UUID: 73d11d67-6b4b-477f-8b8a-a07859827013
dc.identifier.otherJisc: 677221
dc.identifier.otherpublisher-id: s41598-022-22315-9
dc.identifier.othermanuscript: 22315
dc.identifier.otherORCID: /0000-0001-7150-2006/work/121700543
dc.identifier.otherScopus: 85140345460
dc.identifier.urihttp://hdl.handle.net/2299/25836
dc.description© The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
dc.description.abstractCovalent and non-covalent nanofluids were tested inside a circular tube fitted with twisted tape inserts with 45° and 90° helix angles. Reynolds number was 7000 ≤ Re ≤ 17,000, and thermophysical properties were assessed at 308 K. The physical model was solved numerically via a two-equation eddy-viscosity model (SST k-omega turbulence). GNPs-SDBS@DW and GNPs-COOH@DW nanofluids with concentrations (0.025 wt.%, 0.05 wt.% and 0.1 wt.%) were considered in this study. The twisted pipes' walls were heated under a constant temperature of 330 K. The current study considered six parameters: outlet temperature, heat transfer coefficient, average Nusselt number, friction factor, pressure loss, and performance evaluation criterion. In both cases (45° and 90° helix angles), GNPs-SDBS@DW nanofluids presented higher thermohydraulic performance than GNPs-COOH@DW and increased by increasing the mass fractions such as 1.17 for 0.025 wt.%, 1.19 for 0.05 wt.% and 1.26 for 0.1 wt.%. Meanwhile, in both cases (45° and 90° helix angles), the value of thermohydraulic performance using GNPs-COOH@DW was 1.02 for 0.025 wt.%, 1.05 for 0.05 wt.% and 1.02 for 0.1 wt.%.en
dc.format.extent24
dc.language.isoeng
dc.relation.ispartofScientific Reports
dc.subjectArticle
dc.subject/639/766/189
dc.subject/639/925/918
dc.subject/639/301/357
dc.subject/639/301/1034
dc.subjectarticle
dc.titleThermohydraulic analysis of covalent and noncovalent functionalized graphene nanoplatelets in circular tube fitted with turbulatorsen
dc.contributor.institutionDepartment of Engineering and Technology
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionSchool of Computer Science
dc.description.statusPeer reviewed
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1038/s41598-022-22315-9
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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