研究生: |
楊宇宏 Yu-Hung Yang |
---|---|
論文名稱: |
解壓對二氧化碳氣泡於過飽和水溶液中之消長現象研究 |
指導教授: | 李雄略 |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 動力機械工程學系 Department of Power Mechanical Engineering |
論文出版年: | 2005 |
畢業學年度: | 93 |
語文別: | 中文 |
論文頁數: | 29 |
中文關鍵詞: | 二氧化碳氣泡 、解壓 、消長 |
外文關鍵詞: | bubble, carbonated, decompression, growth |
相關次數: | 點閱:1 下載:0 |
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由解壓引起的氣泡消長在日常生活、機件運行甚至反應的過程中隨處可見,在微尺度的環境下其影響性尤其顯著,因此本研究欲以數值模擬來呈現微小氣泡在解壓過程中其生長的變化情形。
本文以非相似轉換法順利解出二氧化碳自過飽和水溶液析出而形成氣泡之成長(或消滅)現象。由於表面張力之作用,小於臨界半徑之氣泡將萎縮,反之,大於臨界半徑之氣泡將可持續成長。由本研究之解顯示成長中之氣泡,其表面積之成長率最後為一定值,同時其值會隨著壓降的增加以拋物線的形式增長。另外經由和Cha and Henry [7]的結果做比較,我們了解到忽略 會對氣泡的成長速率造成一定程度的影響。
經由本文的研究,我們對於氣泡受到解壓而產生的消長過程可以有更深層的了解,同時經由參數的改變,我們亦可用來控制氣泡生長的行為模式。
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