On Classification of Water-in-Oil and Oil-in-Water Droplet Generation Regimes in Flow-Focusing Microfluidic Devices

Colloids and Interfaces

article

Ampol Kamnerdsook¹  Ekachai Juntasaro¹  Numfon Khemthongcharoen²  Mayuree Chanasakulniyom³  Witsaroot Sripumkhai²  Pattaraluck Pattamang²  Chamras Promptmas⁴  Nithi Atthi²  Wutthinan Jeamsaksiri² 

[1] Mechanical Engineering Simulation and Design Group, The Sirindhorn International Thai-German Graduate School of Engineering ,(TGGS), King Mongkut’s University of Technology North Bangkok;National Electronics and Computer Technology Center ,(NECTEC), National Science and Technology Development Agency;Center for Standardization and Product Validation, Faculty of Medical Technology, Mahidol University;Department of Biomedical Engineering, Faculty of Engineering, Mahidol University

关键词: micro-droplet;    droplet generation regime;    phase diagram;    capillary number;    microfluidic;    dripping;   

DOI  :  10.3390/colloids7010017

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

The objective of this research work is to propose a phase diagram that can be used to find a proper operating condition for generating droplets of different types. It is found that the phase diagram of QR versus CaD can effectively classify the droplet generation into three vivid regimes: dripping, jetting and tubing. For the dripping regime, its operating condition is in the range of either CaD < 10−4 and QR < 50 or 10−3 < CaD < 10−4 and QR < 1. For the jetting regime, its operating condition is in the range of either CaD < 1.35 × 10−2 and QR 100 or CaD 1.35 × 10−2 and QR 1. For the tubing regime, its operating condition is in the range of CaD 1.35 × 10−2 and QR < 1.

【 授权许可】

CC BY