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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 朱錦洲 | |
dc.contributor.author | Che-Wei Chang | en |
dc.contributor.author | 張哲瑋 | zh_TW |
dc.date.accessioned | 2021-06-16T05:24:14Z | - |
dc.date.available | 2017-08-21 | |
dc.date.copyright | 2014-08-21 | |
dc.date.issued | 2014 | |
dc.date.submitted | 2014-08-14 | |
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[41] Sfakiotakis, M., Lane, D. & Davies, J. 1999 Review of fish swimming modes for aquatic locomotion. IEEE Journal of Oceanic Engineering, 24(2), 237-252. [42] Taylor, G. K., Nudds, R. L. & Thomas, A. L. R. 2003 Flying and swimming animals cruise at a Strouhal number tuned for high power efficiency. Nature 435, 707–711. [43] Triantafyllou, G. S., Triantafyllou, M. S. & Grosenbaugh, M. A. 1993 Optimal thrust development in oscillating foils with application to fish propulsion. J. Fluids Struct. 7, 205–224. [44] Triantafyllou, M. S., Triantafyllou, G. S. & Gopalkrishnan, R. 1991 Wake mechanics for thrust generation in oscillating foils. Phys. Fluids 3 (12), 2835–2837. [45] Tytell, E. D. & Lauder, G. V. 2004 The hydrodynamics of eel swimming. Part I. Wake structure. J. Expl Biol. 207, 1825–1841. [46] Williamson, C. H. K. & Roshko, A. 1988 Vortex formation in the wake of an oscillating cylinder. J. Fluids Struct. 2, 355–381. [47] Wu, T. 1960 Swimming of a waving plate. J. Fluid Mech. 10, 321-344. [48] Wu, J. C. 1981 Theory for aerodynamic force and moment in viscous flow. AIAA J. 19, 432–441. [49] 蕭穎謙 1993 環繞機翼之二維渦漩流的研究,國立台灣大學應用力學研究所博士論文。 [50] 丁上杰 2009 魚類操控式游動之流體動力與生物物理學研究,清華大學動力機械工程學系博士論文 [51] 鄭奇泯 2010 仿生擺振運動撓性翼之受力量測及分析 [52] 周建車 2012 以實驗方法分析在低雷諾數下三角翼流場,國立台灣大學應用力學研究所碩士論文。 [53] 曾耀庭 2013以力元理論探討魚類BCF泳動之尾鰭推進機制,國立台灣大學應用力學研究所碩士論文。 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/56341 | - |
dc.description.abstract | 中文摘要
水下載具近年來有許多學者投入研究,而仿生水下載具更是蓬勃發展,來自於其在水下具有高推進機制,兼具環保、綠能、隱密性等等。本實驗研究對象為魚體BCF泳動之流場觀察,其特點是可利用後方渦漩產生的渦漩結構使其推進力增加,具有高機動和可操作性。仿生撓性尾鰭主要在低雷諾數下進行,在此狀況下會有許多複雜現象產生,例如:反卡門渦漩。為簡化問題,本實驗以展弦比1的魚鰭拍撲,使用粒子顯影、並配合升阻力量測,討論撓性魚鰭後方渦旋發展以及結構。本實驗的工作流體為甘油和水的混合物,以雷諾數500配合,史卓赫數0.2、0.4、0.6,並進行平移運動。使用六軸力規紀錄升阻力隨時間的變化,並觀察不同史卓赫數下升阻力的變化,配合ansys模擬對比其結果。流場觀測方面,藉由釋放顯影粒子,配合PIV方法計算流場渦度場。 本文最後進行不同史卓赫數下流場升阻力配合PIV觀察,搭配力元理論做流場定量分析,在推力方面隨史卓赫數增加推力隨之增加,其中環境渦度影響最大, 側緣渦渦漩並未隨史卓赫數增加而有改變,影響渦旋結構主要為尾渦效應。 | zh_TW |
dc.description.abstract | Abstract
In this study, we investigate three-dimensional thrust mechanisms of finite rigid and deformable flapping plates experiment as a caudal fin of the BCF (body and/or caudal fin) swimming fish at low Reynold numbers , water propeller vehicles in recent years, many scientist involved in research, and biomimetic water propeller vehicle is popular, with a high from its water propulsion mechanism, both environmental protection, green energy, privacy and so on. The experimental study of the fish BCF swimming field observation, which is characterized by the use of the vortex structure behind it generated vortex propulsion increases with high mobility and operability. Bionic flexible caudal fin is mainly carried out at low Reynolds number, in this case there will be many complex phenomena, such as: reversed-Karman vortex. To simplify the problem, this experiment aspect ratio 1 flapping, using particle imaging, and with the lift and drag measurements. Discuss the development of flexible fin behind and vortex structures. The working fluid is a mixture of experimental glycerol and water, with Reynolds number 500, the number (St=0.2,0.4 and 0.6), and two-way movement. Using the six-axis force compliance record up resistance over time and observe up under a different number St resistance changes with ansys simulation comparison of its results. Flow field observations, with the release of the developer particles to calculate the flow field vorticity with PIV method. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T05:24:14Z (GMT). No. of bitstreams: 1 ntu-103-R01543068-1.pdf: 5843264 bytes, checksum: d172c6451e16e1a9b2bc327a3d084981 (MD5) Previous issue date: 2014 | en |
dc.description.tableofcontents | 目錄
口試委員會審定書 # 誌謝 i 中文摘要 ii ABSTRACT iii 目錄 iv 圖目錄 vii 表目錄 x 第1章 緒論 1 1.1.前言 1 1.2.研究背景 2 1.2.1魚類結構 2 1.2.2 運動型態及其作用力 3 1.3.文獻回顧 4 1.3.1魚類游動模式文獻回顧 4 1.3.2魚類BCF尾流泳動推進 9 1.3.3剛性翼與撓性翼推進效率 11 1.4.全文概述 14 第2章 實驗設備與實驗方法 15 2.1. 實驗設備 15 2.1.1實驗水槽 15 2.1.2 黏度計 16 2.1.3 運動模擬系統 17 2.1.4受力量測系統 19 2.1.5 流場量測系統 21 2.2 實驗方法 24 2.2.1 運動控制 25 2.2.2 實驗步驟 25 2.2.3 實驗訊號分析 26 2.4 實驗材料 29 第3章 理論分析 31 3.1. 無因次參數 31 3.1.1 展弦比(Aspect Ratio) 31 3.1.2 雷諾數(Reynolds Number) 32 3.1.3 史卓荷數(Strohual Number) 32 3.1.4 無因次時間 33 3.1.5 力係數 33 3.1.6 平均升力係數 33 3.1.7 平均阻力係數 35 3.2基礎理論 35 3.2.1 近穩態假設(The Quasi-Steady Assumption) 35 3.2.2 尾渦度(Wake Vorticity) 36 3.2.3 卡門步態(Karman gait) 36 3.2.4 非定常拍撲翼理論 37 3.3力元理論 37 3.3.1 力元理論前言 37 3.3.2 輔助勢流 38 3.3.2 力元理論推導 40 第4章 結果與討論 47 4.1 實驗參數 47 4.2 模擬參數 49 4.2.1 流場參數設定 49 4.2.2 運動參數設定 50 4.3 受力量測 53 4.3.1雷諾數 500 史卓赫數 0.2 55 4.3.2 雷諾數 500 史卓赫數0.4 58 4.3.3 雷諾數 500 史卓赫數0.6 61 4.3.4 雷諾數 500 史卓赫數0.2-0.4-0.6 綜合比較 64 4.3.5 實驗整體誤差分析 65 4.4 力元分析 67 4.4.1 雷諾數500 史卓赫數0.2 阻力力元分析 67 4.4.2 雷諾數500 史卓赫數0.4阻力力元分析 68 4.4.3 雷諾數500 史卓赫數0.6阻力力元分析 69 4.5 PIV量測 70 4.5.1雷諾數500 70 4.5.1.1史卓赫數0.2 70 4.5.1.2史卓赫數0.4 72 4.5.1.3史卓赫數0.6 74 4.6流場顯影 76 4.6.1史卓赫數0.2 76 4.6.2史卓赫數0.4 79 4.6.3史卓赫數0.6 81 第5章 結論與未來展望 83 5.1. 結論 83 5.2. 未來展望 84 參考文獻 85 | |
dc.language.iso | zh-TW | |
dc.title | 仿生撓性尾鰭BCF泳動之流場實驗分析 | zh_TW |
dc.title | A Flow Field Experimental Study on BCF Swimming of Bionic-Flexible Caudal Fin | en |
dc.type | Thesis | |
dc.date.schoolyear | 102-2 | |
dc.description.degree | 碩士 | |
dc.contributor.coadvisor | 張建成 | |
dc.contributor.oralexamcommittee | 蘇正瑜,黃世霖,宮春斐 | |
dc.subject.keyword | 力元理論,低雷諾數,史卓赫數,撓性尾鰭,BCF,PIV, | zh_TW |
dc.subject.keyword | force element theory,BCF,caudal fin,PIV,flexible fin, | en |
dc.relation.page | 90 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2014-08-15 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 應用力學研究所 | zh_TW |
顯示於系所單位: | 應用力學研究所 |
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