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題名 | 受一暫態加速度之矩形容器內液體之振盪現象=Oscillations of Fluid in a Rectangular Tank Subjected to Transient Accelerations |
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作 者 | 徐坤龍; | 書刊名 | 中國造船暨輪機工程學刊 |
卷期 | 17:1 1998.02[民87.02] |
頁次 | 頁1-10 |
分類號 | 444 |
關鍵詞 | 液面振盪; 波浪; 水槽液體晃動; Liquid oscillation; Waves; Tank sloshing; |
語文 | 中文(Chinese) |
中文摘要 | 本文以實驗及數值方法分析矩形槽受一短暫加速度作用時液面之振盪現象,應 用數位影像處理方法,觀察矩形槽受一短暫加速度作用時及液面在不同水深之振盪現象變 化;數值模擬則採用VOF方法,將實驗所求得之加速度值代入數值方法計算,以比較數值 計算結果之波高變化及實驗所得之波高差異,經此較結果除相位外,在波高方面差異很小 。因此應用此數值方法計算模擬矩形槽受不同大小之短暫加速度作用下液面所產生之振盪 現象。不同水深下,加速度一定時,水深與最大波高及最低波高關係為非線性關係。槽壁 處第一個波峰發生時間在作用加速度靜止後一小段時間內。水深固定,最大正振幅與最大 負振幅隨外加之加速度增加而增加,在0-0.128g所故之研究範圍內,振幅與加速度約略成 正比之關係。 |
英文摘要 | This paper presents the results of study on fluid the oscillations inside a rectangular tankcausing by transient accelerations acting on a tank. Digital image processing techniques is used toanalyze liquid oscillations inside the tank for different liquid levels under transient accelerations.Also a numerical method, VOF Method is used to simulate liquid motions inside the tank. Thevalues of accelerations obtained from the experiments are used in the numerical computation tocompare the results of the oscillations of the liquid obtained from the experiments and that of the numerical simulations. The numerical scheme is used to simulate oscillations of the fluidcausing by different transient accelerations. For the same acceleration, variations of maximumwave amplitudes with water depths at the tank walls are nonlinear. The first wave amplitudeoccurs within a small time interval after stopping of the tank. For fixed water depths, positivemaximum oscillation amplitudes increase nearly linear with applied accelerations in the rangefrom 0-0.128g. |
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