| 标题 |
Modelling of glass flow induced by bubbling
气泡诱导玻璃流动的模拟
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| 其它 | The goal of this study was to establish a relevant way of introducing the effect of bubbling into mathematical models for glass melting furnaces. Experiments were performed using a highly viscous liquid to observe bubble motions, and the results were converted into glass melt properties by the principle of similitude. The drag coefficient derived from the terminal rising velocity of a single bubble was found to be rather larger than 16/Re; the deviation became larger as the Reynolds number became larger. The effective bubble diameter required to estimate the upward force caused by a continuous bubbling has been formulated by fitting the experimental data to a formula derived from dimensional analysis. The coalescence which often occurs in continuous bubbling has been taken into consideration by using the effective bubble diameter. A procedure for introducing the bubbling into a mathematical model based on the experimental results is proposed. |
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