| 微沟道内两相流速比对液滴形成的影响 |
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| 引用本文： | 彭露,朱红伟,杨旻,国世上.微沟道内两相流速比对液滴形成的影响[J].传感技术学报,2010,23(9):1232-1235. |
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| 作者姓名： | 彭露 朱红伟 杨旻 国世上 |
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| 作者单位： | 武汉大学物理科学与技术学院,武汉,430072;武汉大学物理科学与技术学院,武汉,430072;武汉大学物理科学与技术学院,武汉,430072;武汉大学物理科学与技术学院,武汉,430072 |
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| 基金项目： | 国家自然科学基金项目资助 |
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| 摘 要： | 研究了流聚焦微沟道内不同两相流速比对单分散性液滴形成的影响.不相混容的两相系统能够快速、周期性地形成液滴,液滴的形态和生成率随着油相速度的变化而改变.研究采用模拟软件COMSOL Mutiphysics,模拟了不同流速下液滴的形成过程,并通过实验进行了验证,从流体动力学的角度解释了其物理机制.所得结论为在流聚焦微沟道内获得分散性良好且大小可控的液滴提供了理论和数据支持.
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| 关 键 词： | 液滴 微流控芯片 模拟 流聚焦 |
Effect of flow rate ratio between two phase flows on the droplet formation in microfluidic channel |
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| PENG Lu,ZHU Hongwei,YANG min,GO Shishang.Effect of flow rate ratio between two phase flows on the droplet formation in microfluidic channel[J].Journal of Transduction Technology,2010,23(9):1232-1235. |
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| Authors: | PENG Lu ZHU Hongwei YANG min GO Shishang |
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| Affiliation: | PENG Lu,ZHU Hongwei,YANG min,GO Shishang (Wuhan University School of Physics , Technology,Wuhan 430072,China) |
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| Abstract: | Micro flow-focusing devices with different flow rate conditions are studied in order to produce highly monodisperse droplets. With rapid and periodic breaking-up of the focused disperse phase in two immiscible phase system, the dependence of droplet size and generation rate on the flow rate ratio of two phases are evaluated. Using COMSOL Multiphysics, our work focused on simulating the two phase flows at different flow rates, and the results validated experiments and guided device design. Physical explanati... |
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| Keywords: | droplets microfluidic chip simulation flow-focusing |
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