Generalized correlation for bubble motion

Generalized correlation for bubble motion
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DOI:
10.1002/aic.690470106
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发表时间:
2001
期刊:
影响因子:
3.7
通讯作者:
D. Rodrigue
D. Rodrigue
中科院分区:
工程技术3区
文献类型:
--
作者:
D. Rodrigue

文献摘要

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本文讨论了单个气泡在无污染的无限大牛顿粘性流体中稳定上升的运动。利用从过去世纪的文献中收集的实验数据,建立了气泡速度作为其直径的函数的数据库。这些数据提供了非常广泛的液体性质和气泡流体动力学状态,如密度(722- 1,380 kg/m3),粘度(2.2×10−4−18 Pa·s),表面张力(15.9-91.0 mN/m),雷诺数(1.9×10−7−1.1 × 104)和莫顿数(1.0×10−11−1.0×107)。从量纲分析,提出了一个单一的方程来预测气泡速度。该方法简单,在整个参数范围内具有良好的精度,便于在化工设计计算中使用。
The motion of a single gas bubble rising steadily in an uncontaminated Newtonian viscous fluid of infinite extent is reviewed. Using experimental data gathered from the literature over the past century, a data bunk is set up for bubble velocities as a function of their diameters. These data provided a very broad range of liquid properties and bubble hydrodynamic regimes as density (722–1,380 kg/m3), viscosity (2.2×10−4−18 Pa·s), surface tension (15.9–91.0 mN/m), Reynolds number (1.9×10−7−1.1 × 104), and Morton number (1.0×10−11−1.0×107). From a dimensional analysis, a single equation is proposed to predict bubble velocities. The simplicity and good precision over the whole range of parameters facilitate its use in design calculations of chemical engineering.