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題 名 | 水下爆炸單一氣泡收縮及噴出破裂過程之動力行為=On the Process of Retraction and Collapse of an Explosion Bubble |
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作 者 | 林志榮; 涂季平; 黃清哲; | 書刊名 | 中國土木水利工程學刊 |
卷 期 | 10:1 1998.03[民87.03] |
頁 次 | 頁9-16 |
分類號 | 440.137 |
關鍵詞 | 氣泡噴出; 氣泡振動; 邊界元素法; Bubble jetting; Bubble dynamics; Boundary element method; |
語 文 | 中文(Chinese) |
中文摘要 | 本文研究目的在於建立水下爆炸後所產生的氣泡,不考慮邊界效應影響下的數 學模式,利用三維的邊界元素法求解積分方程式,數值模擬單一氣泡在水下收縮的動力行 為,文中描述氣泡收縮的整個數值計算流程,以及探討數值計算中收斂性的問題,研究結 果顯示水下爆炸後所產生單一氣泡收縮過程之變形圖,並且在氣泡的收縮過程中發現由於 重力的影響,導致氣泡會有噴出的物理現象,而減少氣泡收縮的時間,另外氣泡的周遭靜 水壓力越大、氣泡內初始壓力減少,均會縮短氣泡破壞的時捏。 |
英文摘要 | The purpose of this study is to establish a numerical model to describe the process of retraction and collapse of an explosion bubble in a free field. Boundary element method is utilized to solve an integral equation in the formulation. The numerical procedure for describing the bubble retraction and collapse is discussed in details. The convergence tests of the numerical evaluation are performed. The results show the retraction process of the bubble. In addition, the effects of the gravity, ambient pressure and initial gas pressure in the bubble are discussed. |
本系統中英文摘要資訊取自各篇刊載內容。