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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 朱錦洲,張建成 | |
dc.contributor.author | Zi-Ya Li | en |
dc.contributor.author | 李孜亞 | zh_TW |
dc.date.accessioned | 2021-06-16T17:15:25Z | - |
dc.date.available | 2017-08-22 | |
dc.date.copyright | 2012-08-22 | |
dc.date.issued | 2012 | |
dc.date.submitted | 2012-08-19 | |
dc.identifier.citation | [1] Andersen, A., Bohr, T., Stenum, B., Rasmussen, J. J., & Lautrup, B. (2003). Anatomy of a Bathtub Vortex. Physical Review Letters, 91(10), 104502.
[2] Andersen, A., Bohr, T., Stenum, B., Rasmussen, J. J., & Lautrup, B. (2006). The bathtub vortex in a rotating container. Journal of Fluid Mechanics, 556(1), 121-146 [3] Black, M. L., & Willoughby, H. E. (1992). The Concentric Eyewall Cycle of Hurricane Gilbert. Monthly Weather Review, 120(6), 947-957. [4] Davies, P. A. (1972). Experiments on Taylor columns in rotatingstratified fluids. Journal of Fluid Mechanics, 54(4), 691-717. [5] Dritschel, D. G., & Waugh, D. W. (1992). Quantification of the inelastic interaction of two asymmetric vortices in two-dimensional vortex dynamics. Physics of Fluids.A., 4, 1737-1744. [6] Echavez, G., & McCann, E. (2002). An experimental study on the free surface vertical vortex. Experiments in Fluids, 33, 414-421. [7] Taylor G.I (1923) Experiments on the Motion of Solid Bodies in Rotating Fluids, Proc. Roy. Soc. (London), A104 (1923), pp. 213–218 [8] Hatef A. Khaledi, Helge I. Andersson(2010), On vortex streets behind Taylor column, Physics Letters A, 374(2010) 4517-4522 [9] Hopfinger, E. J., & van Heijst, G. J. F. (1993). Vortices in rotating fluids. Annual Review of Fluid Mechanics, 25, 241-289. [10] Jacobs, S. J. (1964). The Taylor column problem. Journal of Fluid Mechanics, 20(4), 581-591. [11] Proudman J. (1916), on the motion of Solids in a Liquid Possessing Vorticity, Proc. R. Soc. Lond. A 1916 92, 408-424 [12] Kuo, H.C., Chang, C. P., Yang, Y. T., &Jiang, H.J.(2009) Western North Pacific Typhoons with Concentric Eyewalls. Monthly Weather Review, 137(11), 3758-3770 [13] Kuo, H. C., Lin, L. Y., Chang, C. P., & Williams, R. T. (2004). The Formation of Concentric Vorticity Structures in Typhoons. Journal of the Atmospheric Sciences, 61(22), 2722-2734. [14] Lundgren, T. S. (1985). The vortical flow above the drain-hole in a rotating vessel. Journal of Fluid Mechanics Digital Archive, 155(1), 381-412. [15] Hide R. and Ibbetson A.(1966) An experimental study of 'Taylor columns Icarus, 5, 279-290 [16] Martin Seelye & Drucker Robert (1997) The effect of possible Taylor columns on the summer ice retreat in the Chukchi Sea, Journal of Geophysical Research, 10,473-10 [17] Willoughby, H. E., Clos, J. A., & Shoreibah, M. G. (1982). Concentric Eye Walls, Secondary Wind Maxima, and The Evolution of the Hurricane vortex. Journal of the Atm ospheric Sciences, 39(2), 395-411. [18] 黃世霖. (2008). 「具背景效應下單一渦漩之生成、演變及環境熱效應之探討」: 國立台灣大學應用力學所博士論文。 [19] 邱奕哲. (2010). 「以實驗探討雙眼牆渦漩之形成與演變過程」: 國立台灣大學應用力學所碩士論文。 [20] 陳尹中(2010). 「旋轉流體中泰勒渦柱與池盆渦漩交互影響之數值計算分析」: 國立台灣大學應用力學所碩士論文。 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/63636 | - |
dc.description.abstract | 本研究以水工實驗的方式,探討具背景渦度下,泰勒渦柱與池盆渦漩之交互影響。實驗中以吸入法產生渦漩,流場上下為固體邊界,在旋轉水槽底板中心有一吸水孔,在其上方上板處設置一圓柱,用以產生泰勒渦柱效應。針對當Rossby number(Ro = Uin/fR)與Ekman number (Ek = ν /fR2)遠小於一時,探討泰勒渦柱與艾克曼邊界層之關係,比較在不同圓柱高度(h/H)與不同圓柱排列方法,渦漩流場之特徵,以及在暫態時產生的雙眼牆現象。
研究發現流場處於地轉平衡中時,流場可分成三區域:地轉平衡區、上下邊界層區與中心渦柱區。並只以五種路徑流入吸水孔:(i)在底部Ekman layer之中,逆時針進入水孔,(ii) 在底部Ekman layer之中,且穿越泰勒柱之下邊緣後隨Ekman pumping流向孔洞,(iii)在底部Ekman layer之上緣,欲流入中央時被泰勒柱阻擋後往上攀升,之後隨著頂部Ekman layer進入中央渦柱,(iv)在頂部Ekman layer中,在遇到圓柱後先繞著圓周面向下流至端面,而後進入中央渦柱流入水孔,(v) 高於底部邊界層受到泰勒渦柱的影響,開始向上旋轉攀升到高於圓柱端面,之後到達圓柱端面受此處之下沉流而進入中央渦柱。而越高的圓柱高度能使泰勒渦柱對流場的影響較強。而在不同圓柱堆疊、排列的實驗中,確認了因泰勒渦柱而出現的外牆位置,以及以流體流經泰勒柱下方時的運動情況。在暫態的實驗中,發現NP型態的改變方式有明顯的雙眼牆現象。 | zh_TW |
dc.description.abstract | The study is aimed to investigate interactions between a Taylor column and a bathtub vortex in a cylindrical rotating tank experimentally. The tank has a central drain-hole at the bottom boundary and a top-down cylinder which bring the Taylor column effect placed on the top boundary. We are interested in the case of prominent Taylor columns and Ekman layers, i.e., when both of Rossby number and Ekman number are much smaller then unity. We also examine the effect of the ratio of h/H and the effect of stacking several cylinders.
It found that for the flow at geostrophic balance, the flow domain can be divided into three region: geostrophic bulk, Ekman layer and central vortex core. Moreover, there are formed five routes of exit flow patterns: (i) the fluid sneaks through the bottom Ekman layer and flows direct into the drain hole; (ii) the fluid sneaks through the bottom Ekman layer and subjects to Ekman pumping, and downwards to drain hole; (iii)the fluid moves up due to the Taylor column effect, a part of these sneaks through the bottom gap, then subjects to Ekman pumping, and downwards to drain hole; (iv)the fluid through the top Ekman layer and sneaks through the top gap to the dran-hole by downward central vortex core;(v) the fluid moves up due to the Taylor column effect, a part of these sneaks through the top gap, then follow the path(iv). Moreover, the effect of Taylor column depends on the height of cylinder. The position of the outer wall is confirmed by the experiment of stacking cylinder. The double eyewall is found obviously on the NP transition process. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T17:15:25Z (GMT). No. of bitstreams: 1 ntu-101-R99543037-1.pdf: 25187679 bytes, checksum: b3b5042e894f65c0926aaa6f68735f19 (MD5) Previous issue date: 2012 | en |
dc.description.tableofcontents | 摘要 iii
Abstract iv 目錄 v 圖目錄 viii 第一章緒論 1 1.1全文概述 1 1.2 研究動機及背景 2 1.3 文獻回顧 4 1.3.2 池盆渦漩(Bathtub Vortex) 8 1.3.3 雙眼颱風(Double Eyewall Typhoon) 11 第二章 理論分析 15 2.1 旋轉座標中的運動方程式 15 2.2 泰勒柱現象(Taylor Column) 16 2.3 固體表面的艾克曼層 18 第三章 實驗設備及實驗方法 21 3.1 實驗設備 21 3.1.1 旋轉平台 21 3.1.2 旋轉水槽 23 3.1.3 流體吸取裝置 24 3.1.4 流量量測裝置 25 3.1.5 圓柱及固體邊界 27 3.1.6 照明設備 27 3.1.7 染料施放設備 27 3.1.8 流場顯影粒子 28 3.1.9 流場顯影雷射 29 3.1.10 影像擷取設備 30 3.1.11 圓柱起降裝置 31 3.2 流場顯影及影像分析方法 32 3.2.1 染料注入法 32 3.2.2 雷射光頁顯影法 32 3.2.3 粒子影像追跡法(Particle tracking velocimetry, PTV) 33 第四章 實驗結果與分析 35 4.1不同圓柱高度之流場分析 35 4.1.1實驗方法 35 4.1.2 圓柱高度h/H = 0 37 4.1.2 圓柱高度h = 0.3 39 4.1.2 圓柱高度h /H = 0.5 46 4.1.2 圓柱高度h = 0.7 48 4.2堆疊不同圓柱直徑之流場分析 51 4.2.1實驗目的 51 4.2.2實驗方法 51 4.2.3實驗結果 51 4.3 三圓柱環狀排列之流場分析 53 4.3.2實驗目的 53 4.3.2實驗方法 53 4.3.3 實驗結果 54 4.4二次流流場觀測(Second Flow Structure) 55 4.4.1實驗目的 55 4.4.2 實驗方法 55 4.4.3 實驗結果 56 4.5暫態變化(Transition Process) 58 4.5.1實驗目的 58 4.5.2實驗方法 59 4.5.3實驗結果, NP暫態變化過程 59 4.5.4實驗結果, PN暫態變化過程 61 4.5 實驗與數值模擬的比較 64 第五章 結論與未來展望 68 Reference 70 | |
dc.language.iso | zh-TW | |
dc.title | 以實驗探討旋轉流體中泰勒渦柱與池盆渦漩交互影響 | zh_TW |
dc.title | An Experimental Investigation of Interactions between
Taylor Column and Bathtub Vortex in Rotating Fluid | en |
dc.type | Thesis | |
dc.date.schoolyear | 100-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 黃世霖,謝政達,郭光輝 | |
dc.subject.keyword | 池盆渦漩,泰勒渦柱,艾克曼層,流場顯影,雙眼牆現象, | zh_TW |
dc.subject.keyword | Bathtub vortex,Taylor column,Ekman layer,Double eyewall, | en |
dc.relation.page | 71 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2012-08-19 | |
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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