EXPERIMENTAL-STUDY OF AIR ENTRAINMENT AT A SOLID-LIQUID-GAS INTERFACE
EXPERIMENTAL-STUDY OF AIR ENTRAINMENT AT A SOLID-LIQUID-GAS INTERFACE
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DOI：
10.1016/0009-2509(76)87040-6
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发表时间：
1976-01-01
影响因子：
4.7
通讯作者：
KENNEDY, BS
中科院分区：
文献类型：
--
作者：
BURLEY, R;KENNEDY, BS
本文介绍了用连续运动的平面带将空气卷吸到液池中的实验研究的一些数据。表面张力和粘度的单独影响进行了描述，并在流体性质的背景下给出了空气夹带的各种模式。空气夹带的速度被发现是一个函数的表面张力和粘度小于4.65泊的粘度。对于大于该值的粘度，空气夹带速度趋向于与表面张力无关的恒定值9.5 cm sec-1。通过类比，提出了We= kReaandWe =c（Bo+ 1）Red的关系式，用以描述无浮力效应和有浮力效应时的空气卷吸数据。当以上述形式绘制时，来自四种磁带和九种液体的研究数据给出了非常高的相关性。结果表明，条件Ca =We/Re=常数并不是一个适用于倾伏面卷吸空气的普遍准则。实验数据表明，对于所研究的垂直倾伏平面带，空气卷吸速度可由关系式VAF = 67.679（μ π（g/ρσ））-0.672估算。
Some data from an experimental study of air entrainment into a fluid bath by a continuous moving plane tape is presented. The separate effects of surface tension and viscosity are described and the various modes of air entrainment are given in the context of fluid properties. The velocity of air entrainment is found to be a function of surface tension and viscosity for viscosities less than 4.65 poise. For viscosities greater than this value, the air entrainment velocity tended to a constant value of 9.5 cm sec−1independent of surface tension. Relationships of the form:We=k ReaandWe=c(Bo+ 1)Red, are suggested by analogy to describe air entrainment data without and with buoyancy effects. Data from studies on four tapes and nine fluids gave a very high correlation when plotted in the above form. The data is in substantial agreement with that from similar studies, and shows that the conditionCa=We/Re= constant is not a global criteria for air entrainment by a plunging surface. The experimental data shows that air entrainment velocity may be estimated from the relationshipVAF= 67.679 (μ√(g/ρσ))−0.672for the normally plunging plane tapes studied.