dc.contributor.author | Tao, Hai | |
dc.contributor.author | Alawi, Omer A. | |
dc.contributor.author | Hussein, Omar A. | |
dc.contributor.author | Ahmed, Waqar | |
dc.contributor.author | Abdelrazek, Ali H. | |
dc.contributor.author | Homod, Raad Z. | |
dc.contributor.author | Eltaweel, Mahmoud | |
dc.contributor.author | Falah, Mayadah W. | |
dc.contributor.author | Al-Ansari, Nadhir | |
dc.contributor.author | Yaseen, Zaher Mundher | |
dc.date.accessioned | 2022-10-24T12:00:06Z | |
dc.date.available | 2022-10-24T12:00:06Z | |
dc.date.issued | 2022-10-21 | |
dc.identifier.citation | Tao , 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.issn | 2045-2322 | |
dc.identifier.other | Jisc: 677221 | |
dc.identifier.other | publisher-id: s41598-022-22315-9 | |
dc.identifier.other | manuscript: 22315 | |
dc.identifier.other | ORCID: /0000-0001-7150-2006/work/121700543 | |
dc.identifier.uri | http://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.abstract | Covalent 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.extent | 24 | |
dc.format.extent | 4625312 | |
dc.language.iso | eng | |
dc.relation.ispartof | Scientific Reports | |
dc.subject | Article | |
dc.subject | /639/766/189 | |
dc.subject | /639/925/918 | |
dc.subject | /639/301/357 | |
dc.subject | /639/301/1034 | |
dc.subject | article | |
dc.title | Thermohydraulic analysis of covalent and noncovalent functionalized graphene nanoplatelets in circular tube fitted with turbulators | en |
dc.contributor.institution | Department of Engineering and Technology | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.contributor.institution | School of Computer Science | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1038/s41598-022-22315-9 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |