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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 王興華 | |
dc.contributor.author | Xing-Xiong Yang | en |
dc.contributor.author | 楊幸雄 | zh_TW |
dc.date.accessioned | 2021-06-14T17:11:58Z | - |
dc.date.available | 2018-07-25 | |
dc.date.copyright | 2008-07-30 | |
dc.date.issued | 2008 | |
dc.date.submitted | 2008-07-25 | |
dc.identifier.citation | 1. J. R. Adam, N. R. Lindblad, and C. D. Hendricks, “The Collision, Coalescence and Disruption of Water Droplets,” Journal of Applied Physics, Vol.39, No.11,pp.5173-5180 (1968).
2. D. M. Whelpdale and R. List, “The Coalescence in Raindrop Growth,” Journal of Geophysics Research, Vol.76, No.12, pp.2386-2856(1971). 3. T. B. Low and R. List, “Collision, Coalescence and Backup of Raindrops. Part 2:Parameterization of Fragment Size Distribution,” J. Atm. Sci., Vol. 39, pp. 1607-1618(1982) 4. G. Brenn and A. Frohn, “Collision and Merging of Two Equal Droplets of Propanol,” Experiments in Fluids, Vol. 7, pp.441-446 (1989). 5. N. Ashgriz and P. Givi, “Coalescence Efficiencies of Fuel Droplets in Binary Collisions,” International Communication of Heat and Mass Transfer, Vol.16, pp.11-20 (1989). 6. N. Ashgriz and J. Y. Poo, “Coalescence and Separation in Binary Collisions of Liquid Droplets,” Journal of Fluid Mechanics, Vol.221, pp.183-204 (1990). 7. Y. J. Jiang, A. Umemura, and C. K. Law, “An Experimental Investigation on the Collision Behavior of Hydrocarbon Droplets,” Journal of Fluid Mechanics, Vol.234, pp.171-190 (1992). 8. J. Qian and C. K. Law, “Regimes of Coalescence and Separation in Droplet Collision,” Journal of Fluid Mechanics, Vol.331, pp.59-80 (1997). 9. R. W. Park, “Behavior of Water Drops Colliding in Humid Nitrogen,” Ph. D. thesis, Department of Chemical Engineering, The University of Wisconsin, pp. 577(1970). 10. M. Orme, “Experiments on Droplet Collisions, Bounce, Coalescence and Disruption,” Progress in Energy Combustion Science, Vol.23, pp.65-79 (1997) 11. P. R. Brazier-Smith, S. G. Jennings, and J. Latham, “The Interaction of Falling Water Drops: Coalescence,” Proc. R. Soc. Lond. A 326, pp.393-408 (1972) | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/41015 | - |
dc.description.abstract | 液滴碰撞之實驗可藉碰撞參數與韋伯數將其現象分為五個區域,(I)兩液滴微量變形後結合;(II)彈開;(III)兩液滴歷經顯著變形後結合;(IV)正撞拉伸分離;(V)擦撞拉伸分離,根據前人之實驗,水在一大氣壓空氣中碰撞,不會出現彈開之碰撞現象,僅會出現(I)、(IV)、(V)三種現象。
在本實驗中,於水中加入界面活性劑,Triton X100,以改變表面張力。觀察其碰撞現象,此時可發現有彈開之碰撞現象,且隨著表面張力的改變,各種碰撞現象區域之分界也會跟著改變,本實驗即在探討表面張力之改變對邊界之影響。 | zh_TW |
dc.description.abstract | The boundaries of droplet collision phenomena are defined by Weber number and Impact parameter, namely(I) coalescence after minor deformation, (II) bouncing, (III) coalescence after substantial deformation, (IV) coalescence followed by separation for near head-on collisions, and (V) coalescence followed by separation for off-centre collisions. According to earlier investigation, bouncing collision of water is not observed at 1 atm. Air.
In this experiment, the surfactant, Triton X100, is dissolved in water in order to change the surface tension. Observing its collision phenomena, we can find bouncing collision and the boundaries of collision is changed. The influence of the surface tension on the boundaries of droplet collision will be discussed in this experiment. | en |
dc.description.provenance | Made available in DSpace on 2021-06-14T17:11:58Z (GMT). No. of bitstreams: 1 ntu-97-R95522115-1.pdf: 1581789 bytes, checksum: 575635f8b05ee8c7efc2e53b20a8f76f (MD5) Previous issue date: 2008 | en |
dc.description.tableofcontents | 中文摘要 I
ABSTRACT II 第一章 緒 論 1 1-1 前言 1 1-2 文獻回顧 1 1-3 研究動機與目的 3 第二章 理論基礎 5 第三章 實驗設備與方法 8 3-1實驗設備 8 3-2 實驗步驟及資料處理方法 11 3-3 誤差分析 13 第四章 結果與討論 15 4-1 水 15 4-2 0.0005% TRITON 16 4-3 0.05% TRITON 17 4-3 討論 19 第五章 結論 21 參考文獻 22 圖3-1 實驗設備示意圖 24 圖3-2 實驗設備實圖 25 圖3-3 液滴產生器示意圖 26 圖3-4 液滴產生器實圖 26 圖3-5 控制箱實圖 27 圖3-6 閃頻儀延遲電路(STROBE DELAY)校正圖 27 圖3-7 CCD加鏡頭組合圖 27 圖3-8 碰撞機構實圖 28 圖4-1 四倍率標準尺 29 圖4-2 水之碰撞模式對應其韋伯數與碰撞參數關係圖 29 圖4-3 水,WE=16.49,B=0.027,VR=2.06M/S,結合之時序圖 29 圖4-4 水,WE=19.27,B=0.071,VR=2.21M/S,正撞拉伸分離之時序圖 30 圖4-5 水,WE=46.124,B=0.056,VR=3.43M/S,正撞拉伸分離之時序圖 30 圖4-6 水,WE=31.94,B=0.582 ,VR=28.2M/S,擦撞拉伸分離之時序圖 31 圖4-7 0.0005% TRITON之碰撞模式對應其韋伯數與碰撞參數關係圖 32 圖4-8 0.0005% TRITON,WE=9.87,B=0.038,VR=1.40M/S,結合之時序圖 32 圖4-9 0.0005% TRITON,WE=17.71,B=0.763,VR=1.85M/S,彈開之時序圖 33 圖4-10 0.0005% TRITON,WE=33.11,B=0.015,VR=2.46M/S,正撞拉伸分離之時序圖 33 圖4-11 0.0005% TRITON,WE=36.82,B=0.764,VR=2.59M/S,擦撞拉伸分離之時序圖 34 圖4-12 0.05% TRITON之碰撞模式對應其韋伯數與碰撞參數關係圖 35 圖4-13 0.05% TRITON,WE=1.396,B=0.186,VR=0.415M/S,結合之時序圖 35 圖4-14 0.05% TRITON,WE=42.07,B=0.015,VR=2.043M/S,結合之時序圖 36 圖4-15 0.05% TRITON,WE=48.27,B=0.244,VR=2.179M/S,結合之時序圖 37 圖4-16 0.05% TRITON,WE=27.16,B=0.08,VR=1.704M/S,彈開之時序圖 37 圖4-17 0.05% TRITON,WE=42.07,B=0.392,VR=2.043M/S,彈開之時序圖 38 圖4-18 0.05% TRITON,WE=55.73,B=0.031,VR=2.34M/S,正撞拉伸分離之時序圖 38 圖4-19 0.05% TRITON,WE=71.48,B=0.593,VR=2.57M/S,擦撞拉伸分離之時序圖 39 圖4-20 正撞拉伸分離之臨界韋伯數與歐式數關係圖 39 | |
dc.language.iso | zh-TW | |
dc.title | 水添加界面活性劑碰撞現象之觀察 | zh_TW |
dc.title | The Collision Phenomena of Water Droplet Adding with the Surfactant | en |
dc.type | Thesis | |
dc.date.schoolyear | 96-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 賴君亮,楊照彥,潘國隆 | |
dc.subject.keyword | 液滴碰撞,界面活性劑,水, | zh_TW |
dc.subject.keyword | droplet collision,surfactant,water, | en |
dc.relation.page | 22 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2008-07-28 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
顯示於系所單位: | 機械工程學系 |
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