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  1. NTU Theses and Dissertations Repository
  2. 工學院
  3. 化學工程學系
請用此 Handle URI 來引用此文件: http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/87949
完整後設資料紀錄
DC 欄位值語言
dc.contributor.advisor諶玉真zh_TW
dc.contributor.advisorYu-Jane Shengen
dc.contributor.author陳冠臨zh_TW
dc.contributor.authorGuan-Lin Chenen
dc.date.accessioned2023-07-31T16:29:29Z-
dc.date.available2023-11-09-
dc.date.copyright2023-07-31-
dc.date.issued2023-
dc.date.submitted2023-06-20-
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dc.identifier.urihttp://tdr.lib.ntu.edu.tw/jspui/handle/123456789/87949-
dc.description.abstract本研究利用多體耗散粒子動力學模擬並探討在具有瞬間擴張且存在Concus-Finn (CF) filamet之矩形U型管道中的毛細現象。對於尾端開放之瞬間擴張管道,依據接觸角θy、與CF filamet有關之臨界角θf以及與主要流動有關之θc能分出四種流動類型。首先,在θy > θf 和 θy > θc 情況下,無邊角流動,且主要流動停止於小U形槽的末端; 其次,在θc > θy > θf 情況下,無邊角流動但主要流動存在;第三,在θf > θy > θc 情況下,邊角流動發生在大U形槽中但主要流動不存在;第四,在θy < θf 和 θy < θc 情況下,邊角流動和主要流動都出現在大U形槽中。此外,流動行為也受大U形槽長度(le)影響,對於尾端封閉之瞬間擴張管道,可以得到類似的分類結果,但是當le足夠小時,第三種情況的結果會改變,且最終可以填滿管道擴大的部分。zh_TW
dc.description.abstractImbibition dynamics in a rectangular U-groove that is connected to a sudden enlargement and complicated by the presence of Concus-Finn (CF) filaments is investigated using many-body dissipative particle dynamics. For open-ended sudden enlargement, four flow types are identified and depend on the contact angle θy, critical angle θf associated with CF filaments, and critical angle θc associated with the main flow. Firstly, for θy > θf and θy > θc, the corner flow is absent, and the main flow stops at the end of the small U-groove. Secondly, for θc > θy > θf, the corner flow vanishes, but the main flow occurs. Thirdly, for θf > θy > θc, the corner flow takes place in the large U-groove, but the main flow is still absent. Fourthly, for θy < θf and θy < θc, both the corner and main flows appear in the large U-groove. Additionally, the flow dynamics is greatly influenced by the length of the large U-groove (le). For closed-ended sudden enlargement, similar findings can be obtained. However, the outcome of the third case is altered for sufficiently small le, and the sudden enlargement can eventually be filled.en
dc.description.provenanceSubmitted by admin ntu (admin@lib.ntu.edu.tw) on 2023-07-31T16:29:28Z
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dc.description.provenanceMade available in DSpace on 2023-07-31T16:29:29Z (GMT). No. of bitstreams: 0en
dc.description.tableofcontents口試委員審定書 i
致謝 ii
摘要 iii
ABSTRACT iv
CONTENTS v
LIST OF FIGURES vi
LIST OF TABLES viii
Chapter 1 Introduction 1
Chapter 2 Simulation Methods 4
Chapter 3 Results and discussion 7
3.1 Validation of MDPD approach 7
3.2 Capillary flow into a sudden enlargement with an open end 10
3.2.1 The critical contact angle for imbibition 10
3.2.2 Endless-growing CF filaments 13
3.2.3 Four regimes based on θc and θf 16
3.3 Capillary flow into a sudden enlargement with a closed-end 17
Chapter 4 Conclusion 21
Chapter 5 Supporting information 22
Reference 24
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dc.language.isozh_TW-
dc.subject瞬間管道擴張zh_TW
dc.subject毛細現象zh_TW
dc.subject開放式微流道zh_TW
dc.subject矩形U形槽zh_TW
dc.subjectConcus-Finn filamentzh_TW
dc.subjectOpen microchannelen
dc.subjectCapillary flowen
dc.subjectSudden enlargementen
dc.subjectConcus-Finn filamenten
dc.subjectRectangular U-grooveen
dc.title在具有瞬間擴張之U型管道中的毛細現象zh_TW
dc.titleImbibition Dynamics in U-groove Microchannel with Sudden Enlargementen
dc.typeThesis-
dc.date.schoolyear111-2-
dc.description.degree碩士-
dc.contributor.oralexamcommittee曹恆光;陳儀帆;黃俊仁zh_TW
dc.contributor.oralexamcommitteeHeng-Kwong Tsao;Yi-Fan Chen;Chun-Jen Huangen
dc.subject.keyword毛細現象,開放式微流道,矩形U形槽,Concus-Finn filament,瞬間管道擴張,zh_TW
dc.subject.keywordCapillary flow,Open microchannel,Rectangular U-groove,Concus-Finn filament,Sudden enlargement,en
dc.relation.page29-
dc.identifier.doi10.6342/NTU202301057-
dc.rights.note同意授權(全球公開)-
dc.date.accepted2023-06-21-
dc.contributor.author-college工學院-
dc.contributor.author-dept化學工程學系-
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