色散(光学)
标度律
缩放比例
流量(数学)
毛细管作用
机械
航程(航空)
液体流动
液态液体
伦敦分散部队
毛细管数
材料科学
物理
光学
化学
热力学
复合材料
几何学
数学
色谱法
范德瓦尔斯力
量子力学
分子
作者
Jing Song,Lin Sheng,Yongjin Cui,Shi Wang,Yujun Wang,Jian Deng,Guangsheng Luo
标识
DOI:10.1016/j.ces.2022.117746
摘要
Colliding micro-dispersion has been extensively used to generate uniform droplets in liquid-liquid heterogeneous reactions. However, there are few reports on the colliding micro-dispersion. More importantly, only squeezing flow and big size droplets can be generated in the normal colliding micro-dispersion process, and even there exists no general scaling laws for droplet size. We have developed novel T-junction microdevices with new geometric structures to intensify the colliding micro-dispersion and proposed general scaling laws for droplet size in colliding T-junction microdevices. The droplet formation frequency was increased by more than 40 times, and a much wider operating range was allowed in the novel colliding T-junction microdevice. The flow regime distribution under high Weber number was explored for the first time and a complete liquid-liquid flow pattern map under colliding micro-dispersion has been also proposed. We also proved that jetting flow regime can be occurred under high Weber number and low capillary number.
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