Jet pinch-off and drop formation in immiscible liquid–liquid systems

Jet pinch-off and drop formation in immiscible liquid–liquid systems
复制标题

不混溶液-液系统中的射流夹断和液滴形成

DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
E. Longmire
E. Longmire
中科院分区：
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文献类型：
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作者：
D. Webster;E. Longmire

文献摘要

被引文献

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摘要利用激光诱导荧光（LIF）技术研究了甘油-水射流在道康宁200流体不混溶环境中的流动行为。通过匹配流体的折射率获得无失真的图像。将正弦扰动叠加在流动上以锁相液滴形成。强迫频率显着影响的大小，间距和数量的滴内形成的强迫周期和滴和射流界面之间的角度夹断之前。两种流体组合进行了研究，具有相似的密度比，但粘度比相差20倍。粘度比影响射流的稳定性以及夹断角和液滴尺寸。
Abstract The behavior of glycerin–water jets flowing into immiscible ambients of Dow Corning 200 fluid was investigated using laser induced fluorescence (LIF). Undistorted images were obtained by matching the index of refraction of the fluids. A sinusoidal perturbation was superposed on the flow to phase lock the drop formation. The forcing frequency dramatically affected the size, spacing, and number of drops that formed within a forcing cycle and the angle between drops and the jet interface just before pinch-off. Two fluid combinations were studied with similar density ratios, but viscosity ratios differing by a factor of 20. The viscosity ratio affected the jet stability as well as pinch-off angles and drop size.