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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 邱逢琛 | |
dc.contributor.author | Cheng-Chieh Chang | en |
dc.contributor.author | 張政傑 | zh_TW |
dc.date.accessioned | 2021-06-15T04:47:54Z | - |
dc.date.available | 2011-08-05 | |
dc.date.copyright | 2010-08-05 | |
dc.date.issued | 2010 | |
dc.date.submitted | 2010-08-04 | |
dc.identifier.citation | 1. 林欽隆(2008) '臺灣海域海難沉船處理與對策研究',行政院海岸巡防署海岸巡防總局,61頁。
2. 吳昌政(2004) '振動翼流體動力時域計算法之研究',國立台灣大學碩士論文。 3. 連昱揚(2008) '振動翼之流體動力分析',國立台灣大學碩士論文。 4. R.GOPALKRISHNAN, M.S. TRIANTAFLLOU, G.S. TRIANTAFYLLOU & D.BARRETT(1994)”Acitive vorticity control in a shear flow using a flapping foil”, J. Fluid Mech. vol.274,pp1-21 5. Anderson J.M., K. Streitlien., D.S. Barrett, & M.S. Triantafyllou(1998) “Oscillating foils of high propulsive efficiency', Journal of Fluid Mechanics., Vol. 360, pp. 41-72. 6. F.S. Hover. Haugsdal, M.S. Triantafyllou (2004) ” Effect of angle of attack profiles in flapping foil propulsion”, Jouranl of Fluids and Structures, 19, pp.34-47. 7. D.N. BEAL, F. S. HOVER, M.S. TRIANTAFYLLOU, J. C. LIAO & G. V. LAUDER, (2006)“Passive propulsion in vortex wakes”, J. Fluid Mech., Vol.549, pp. 385-402. 8. 莊承翰(2010) '串列式雙振動翼之流體動力實驗分析',國立台灣大學碩士論文。 9. N.G. Shah.(1979) “A New Method of Computation of Radiant Heat Transfer in Combustion Chambers.” PhD thesis, Imperial College of Science and Technology, London, England. 10. Salim .M. Salim, and S.C. Cheah,' Wall y+ Strategy for Dealing with Wall-bounded Turbulent Flows ',IMECS 2009, March 18 - 20, 2009, Hong Kong | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/45877 | - |
dc.description.abstract | 本研究主要目的是為了開發不干擾水下滑翔機滑翔,且能協助水平前進之助推器。先前本研究室曾提出串列式雙振動翼之設計,並進行了水動力數值模擬及實體模型的水槽實驗。研究結果顯示原設計之串列式雙振動翼之推進性能不如預期,仍有改善空間。但另一方面也確認了使用CFD軟體 ” FLUENT ” 所發展的串列式雙振動翼助推器之流體動力數值計算工具有相當的可靠性。因此,延續之前的成果,本研究持續運用該計算工具,在非穩態流場條件下,以動態網格進行多種振動翼型式助推器之流體動力分析,進一步提出串列式雙振動翼之改良設計,探討雙振動翼之配置,各振動翼振幅、相位、頻率、前後翼間距等參數對於推進性能之效應,並釐清了前翼提升雙振動翼推進效率力之力學機制。
本研究藉由數值計算分析探討所獲得的結果,將能作為後續修正實體模型,進行水槽試驗之規劃依據,最終將求促成兼具水平移動能力的水下滑翔機的實現。 | zh_TW |
dc.description.abstract | In view of the fact that an underwater glider is lack of horizontal mobility, a concept of booster with two oscillating fins in series was proposed and investigated in the previous study to enhance the horizontal mobility without disturbing gliding. A test apparatus was established and a series of tank tests were carried out for clarifying its hydrodynamic characteristics. However, it was found that the propulsion performance of the proposed design is not as good as expected, and some modification may be needed for improving the performance. In addition, the CFD software “FLUENT” was applied for comparison, and its validity as a tool to evaluate the design has also been confirmed. In the present study, a modified design is proposed and its performance is investigated using the numerical simulation. It’s also confirmed that the efficiency of two oscillating fins in series can be improved by the fore fin with proper phase lead. | en |
dc.description.provenance | Made available in DSpace on 2021-06-15T04:47:54Z (GMT). No. of bitstreams: 1 ntu-99-R97525009-1.pdf: 4786725 bytes, checksum: 3c180e4e2145bd73636c49f68507ee0f (MD5) Previous issue date: 2010 | en |
dc.description.tableofcontents | 審定書............................. I
致謝............................... II 摘要............................... III ABSTRACT........................... IV 目錄............................... V 表目錄............................. VII 圖目錄............................. VIII 符號說明........................... XIII 第一章 緒論...................... 1 1-1 研究背景....................... 1 1-2 論文架構....................... 5 第二章 振動翼幾何及參數定義........ 6 2-1 幾何形狀及運動參數............. 6 2-2 無因次參數..................... 9 2-3 座標系......................... 10 2-4 流體動力係數及性能係數......... 11 第三章 數值計算方法................ 15 3-1 統御方程式..................... 15 3-2 網格精度測試................... 17 第四章 計算結果與比較.............. 23 4-1 單片翼之模擬結果............... 23 4-2 雙振動翼之模擬結果............. 28 4-3 雙振動翼之相位差模擬結果....... 30 4-4雙振動翼之推力機制討論.......... 37 4-5改良先後雙振動翼之比較.......... 61 第五章 結論與未來展望.............. 62 5-1結論............................ 62 5-2 未來展望....................... 63 參考文獻........................... 64 附錄A.............................. 66 附錄B.............................. 67 附錄C.............................. 71 | |
dc.language.iso | zh-TW | |
dc.title | 串列式雙振動翼助推器設計改良之研究 | zh_TW |
dc.title | Improvement of a Biomimetic Booster with Two Oscillating Fins in Series | en |
dc.type | Thesis | |
dc.date.schoolyear | 98-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 郭振華,辛敬業,周顯光,陳政宏 | |
dc.subject.keyword | 振動翼,水下滑翔機,仿生, | zh_TW |
dc.subject.keyword | Oscillating Foil,Underwater Glider,Biomimetic, | en |
dc.relation.page | 73 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2010-08-04 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
顯示於系所單位: | 工程科學及海洋工程學系 |
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