摘要
目的:研究类文丘里十字型流道中液滴流态形成原因。方法:采用流体体积法以及二维模型,对类文丘里十字型流道中液滴生成进行数值模拟。结果:通过改变毛细数和流量比,在类文丘里十字型流道中观察到三种典型流态,即挤压态、滴落态和射流态。各流态之间的形貌变化和压力呈现出不同规律。结论:毛细数和流量比的变化会改变液滴生成过程中的主导力,进而改变液滴生成流态。
Aims:This paper aims to study the causes of droplet flow regimes in venturi-like flow focusing channels.Methods:Numerical simulations of droplet generation in venturi-like flow focusing channels were performed using the volume of the fluid method and a two-dimensional model.Results:By varying the capillary number and the flow rate ratio,three typical flow regimes,i.e.,squeezing,dripping,and threading,were observed in the venturi-like flow focusing channel.The morphological changes and pressure between the flow regimes showed different patterns.Conclusions:Changes in the capillary number and the flow rate ratio change the dominant forces in the droplet generation process,thus changing the droplet generation flow regime.
作者
夏侯彬
蒋志韬
陈忠利
钱丽娟
XIA HOU Bin;JIANG Zhitao;CHEN Zhongli;QIAN Lijuan(College of Mechanical and Electrical Engineering,China Jiliang University,Hangzhou 310018,China;Key Laboratory of Intelligent Manufacturing Quality Big Data Tracing and Application of Zhejiang Province,Hangzhou 310018,China)
出处
《中国计量大学学报》
2023年第3期397-404,共8页
Journal of China University of Metrology
基金
国家自然科学基金项目(No.12272026,11927802,U1837211)。