本文選題：氣液反應(yīng)器 + 氣泡生長��； 參考：《東北大學(xué)學(xué)報(自然科學(xué)版)》2017年08期

【摘要】：基于高速攝像技術(shù)記錄靜止液體中氣泡生長及脫離過程,并采用Image-Pro Plus 6.0軟件進行后處理,研究了兩種管徑下氣泡生長過程的形狀變化.實驗結(jié)果表明:由于不同管徑下氣泡生長過程中起主導(dǎo)的作用力不同,導(dǎo)致小管徑生成氣泡的高寬比隨時間變化呈先陡后緩的上升趨勢,大管徑生成氣泡的高寬比隨時間變化呈先緩后陡的上升趨勢;由于生長前期不滿足脫離條件,小管徑生成的氣泡會出現(xiàn)下邊緣向液體側(cè)遷移的現(xiàn)象;大管徑生成的氣泡在氣液面與固液面夾角小于接觸角時即達到脫離條件,因此不會出現(xiàn)遷移;3.80 mm氣泡脫離上浮的臨界高寬比稍大于9.28 mm氣泡相應(yīng)值.
[Abstract]:Based on the high speed camera technique, the bubble growth and separation process in the stationary liquid is recorded and the shape changes of the bubble growth process under two tubes are studied by Image-Pro Plus 6 software. The results show that the small diameter of the bubble is caused by the difference of the main leading force in the process of bubble growth under different pipe diameters. The ratio of height to width will rise steeply and later with time, and the height width ratio of the large diameter of the gas bubble increases first and then abruptly with the change of time. As the early growth stage does not meet the separation condition, the bubbles generated by the small tube diameter will appear to the liquid side of the lower edge, and the bubbles generated by the large pipe diameter are in the angle between the gas level and the solid liquid surface. When the contact angle is less than the contact angle, the separation condition will be achieved, so there will be no migration. The critical height width ratio of the 3.80 mm bubble floating off is slightly larger than that of the 9.28 mm bubble.
【作者單位】： 東北大學(xué)材料電磁過程研究教育部重點實驗室;東北大學(xué)冶金學(xué)院;
【基金】：國家自然科學(xué)基金資助項目(51304038) 國家自然科學(xué)基金與寶鋼聯(lián)合資助項目(U1460108) 中國博士后科學(xué)基金特別資助項目(2015T80261)
【分類號】：O359.1
，

本文編號：1991837