Effervescent Atomization and Internal Mixing Air Assist Atomization
Effervescent Atomization and Internal Mixing Air Assist Atomization
复制标题
泡腾雾化和内部混合空气辅助雾化
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
J. Chin
中科院分区：
文献类型：
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作者：
J. Chin
雾化是一种物理过程，通过这种物理过程，大体积液体在气态大气中转化为小液滴的喷雾和其他物理分散；这种物理过程的结果是液体的表面积大大增加。有时，雾化过程被描述为液体射流或薄片被液体本身的动能分解的过程，或者由于暴露在高速空气或气体中，或者由于通过旋转或振动装置i向外部施加机械能的结果。泡沫化雾化是几年前发现的。因此，对雾化过程的描述除了前面的描述外，还应该扩展到以下描述，例如，通过将气体注入到大块液体中形成大量细小气泡以及薄气泡膜在气动阻力、气泡与环境之间的压力梯度(或差)或某些机械装置的作用下破裂，也可以实现大块液体的雾化过程。气泡破裂过程的结果是形成了大量的细小液滴。因此，雾化过程的本质特征是从大体积液体中形成大量的细小液滴，从而大大增加了气液界面面积。例如，如果我们有一个直径为1厘米的球形液球，如果将这个液球分解成直径0.05毫米的细小液滴，液体体积足以形成810个小液滴，液体表面积是直径10毫米的液球形成的液体表面积的200倍。
Atomization is a physical process by which the bulk liquid has been transformed into sprays and other physical dispersions of small liquid droplets in a gaseous atmosphere; the result of such a physical process is that the surface area of the liquid has been greatly increased. Sometimes the process of atomization is described as one in which a liquid jet or sheet is disintegrated by the kinetic energy of the liquid itself, or by exposure to high-velocity air or gas, or as a result of mechanical energy applied externally through a rotating or vibrating device I I I . Effervescent atomization was discovered several years ago. Thus the description of the atomization process should be expanded in addition to the previous statement, to include the following description, such as atomization process of a bulk liquid can also be achieved by injecting gas into bulk liquid to form a large number of fine bubbles and the rupture of the thin bubble film under aerodynamic drag force, by pressure gradient (or difference) between bubble and ambient or by some mechanical device. The result of the bubble rupture process is that a great amount of fine droplets has been formed. Thus the essential feature of the atomization process is the formation of a large number of fine droplets from a bulk liquid to greatly increase the liquid-gas interfacial area. For example, if we have a spherical liquid ball, the diameter of which is 1 cm, if this liquid ball is broken into fine droplets of 0.05 mm in diameter, the liquid volume is enough to form 810 small droplets, and the liquid surface area is increased 200 times as the liquid surface area formed by the liquid ball of 10 mm in diameter.