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dc.contributor.authorLuo, Haoyuen_US
dc.contributor.authorLu, Lichangen_US
dc.contributor.authorHao, Yuen_US
dc.contributor.authorLi, Xiangen_US
dc.contributor.authorDong, Zhilien_US
dc.contributor.authorLiu, Yangen_US
dc.contributor.authorLi, Yuanzheen_US
dc.identifier.citationLuo, H., Lu, L., Hao, Y., Li, X., Dong, Z., Liu, Y. & Li, Y. (2021). Investigation of drag-reduction effect of super-hydrophilic surface in laminar microchannel flow. 6th International Conference on Energy Science and Applied Technology, 804, 022037-.
dc.description.abstractIn previous studies of newly fabricated surface-coating materials, the super hydrophilic surface etched by Cu2+/HNO3 exerts higher drag-reduction effect at low Reynolds numbers than the modified superhydrophobic surface even with similar surface structure. In this paper, both experimental and modelling fluid dynamics studies are used to invest the drag-reduction and flow field for these super hydrophilic surfaces in the microchannel. The experimental results showed that the drag-reduction rate would gradually decrease with the velocity increment of medium. Besides, the dissolved gas does play a key role in reducing the shear stress in the near wall flow field by forming the non-shear air/water interface and increasing its wall-slippage effect. Moreover, the flow-field stimulation analysis provides more intuitive schematic diagram velocity magnitude and pressure changes inside the microchannel, and the surface roughness obtained by chemical etching is capable to enhance the drag-reduction effect as well.en_US
dc.rights© 2021 The Author(s). Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd.en_US
dc.titleInvestigation of drag-reduction effect of super-hydrophilic surface in laminar microchannel flowen_US
dc.typeConference Paperen
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.contributor.conference6th International Conference on Energy Science and Applied Technologyen_US
dc.description.versionPublished versionen_US
dc.subject.keywordsSuper Hydrophilicen_US
dc.subject.keywordsChemical Etchingen_US
dc.subject.keywordsDrag Reductionen_US
dc.subject.keywordsMicrochannel Flowen_US
dc.subject.keywordsMechanism Analysisen_US
dc.description.acknowledgementThis work was supported by the National Natural Science Foundation of China (grant number 51704258); the research foundation of Zhuzhou Smelter Group Co (grant number ZYKJ20190422002); and the Natural science foundation of Hunan Province, China (grant number 2019JJ50587).en_US
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