DC Field | Value | Language |
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dc.contributor.author | Kang, Jun-young | - |
dc.contributor.author | Lee, Gi Cheol | - |
dc.contributor.author | Kim, Moo Hwan | - |
dc.contributor.author | Moriyama, Kiyofumi | - |
dc.contributor.author | Park, Hyun Sun | - |
dc.date.accessioned | 2018-06-15T05:53:47Z | - |
dc.date.available | 2018-06-15T05:53:47Z | - |
dc.date.created | 2018-01-24 | - |
dc.date.issued | 2018-02 | - |
dc.identifier.issn | 0017-9310 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/50958 | - |
dc.description.abstract | The goal of this work is (i) to evaluate the cooling rate on a super-hydrophilic surface as a function of the subcooled degree Delta T-sub of the liquid coolant, (ii) to analyze the contact heat transfer q ''(c) of the liquid-solid contact, and (iii) to investigate the mechanism of microbubble emission boiling (MEB). We fabricated a super-hydrophilic surface by anodic oxidation of a zirconium vertical rod, so called completely wettable surface (CWS), which had surface microstructures with super-hydrophilicity. The CWS results in a decrease of the cooling time t(cool) as compared with the Bare Zirconium surface (BZS) results under small Delta T-sub (t(cool) similar to 50% decrease for Delta T-sub = 0, 15, and 40 K, respectively). However, its surface effect is limited in the case of large Delta T-sub (t(cool) similar to within 5% for Delta T-sub = 60 and 75 K). The fast quench on the CWS under Delta T-sub, explained by the increase in minimum film-boiling temperature T-MFB and rewetting velocity U, is due to the liquid-solid contact. We evaluate the contact area A(c) and volumetric absorption rate of the liquid dV/dt by conducting liquid absorption experiments. The increase in A(c) and dV/dt contribute to an increase in q"(c), by forming the liquid film at the liquid-solid contact spot. The orders of the time scale between capillary-wicking and liquid-solid contact are comparable. Destabilization of the large vapor bubble is caused by an increase in q"(c), which is a major reason for MEB generation, and this mechanism enables the q" to be significantly high on the CWS under subcooled quenching. (C) 2017 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.relation.isPartOf | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | - |
dc.subject | BOILING HEAT-TRANSFER | - |
dc.subject | LIQUID-SOLID CONTACT | - |
dc.subject | VAPOR BUBBLES | - |
dc.subject | FILM | - |
dc.subject | TEMPERATURE | - |
dc.subject | SPHERES | - |
dc.subject | POOL | - |
dc.subject | NANOFLUIDS | - |
dc.subject | COLLAPSE | - |
dc.subject | ALUMINA | - |
dc.title | Subcooled water quenching on a super-hydrophilic surface under atmospheric pressure | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.ijheatmasstransfer.2017.09.006 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, v.117, pp.538 - 547 | - |
dc.identifier.wosid | 000417963300049 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 547 | - |
dc.citation.startPage | 538 | - |
dc.citation.title | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | - |
dc.citation.volume | 117 | - |
dc.contributor.affiliatedAuthor | Lee, Gi Cheol | - |
dc.contributor.affiliatedAuthor | Kim, Moo Hwan | - |
dc.identifier.scopusid | 2-s2.0-85032853901 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 6 | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | BOILING HEAT-TRANSFER | - |
dc.subject.keywordPlus | LIQUID-SOLID CONTACT | - |
dc.subject.keywordPlus | VAPOR BUBBLES | - |
dc.subject.keywordPlus | FILM | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | SPHERES | - |
dc.subject.keywordPlus | POOL | - |
dc.subject.keywordPlus | NANOFLUIDS | - |
dc.subject.keywordPlus | COLLAPSE | - |
dc.subject.keywordPlus | ALUMINA | - |
dc.relation.journalWebOfScienceCategory | Thermodynamics | - |
dc.relation.journalWebOfScienceCategory | Engineering, Mechanical | - |
dc.relation.journalWebOfScienceCategory | Mechanics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Thermodynamics | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Mechanics | - |
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