Experimental Investigation on Droplet Formation through a Minichannel Y- Junction

International Conference on Mechanical, Materials and Renewable Energy

机械制造;材料科学;能源学

Mogra, Ashish ; Ramachandran, M. ; Mehta, Hemant Kumar

关键词: Bubble formation mechanism;    Bubble generation;    Capillary numbers;    Continuous phase;    Different mechanisms;    Droplet formation;    Experimental investigations;    Superficial velocity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/377/1/012189/pdf
DOI  :  10.1088/1757-899X/377/1/012189

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Start your abstract It is a challenging task to understand the bubble formation mechanism and to predict the size distribution of bubbles and its length. Different mechanisms are involved in the generation of bubbles. The objective of the study is to understand the detailed mechanisms of surface breaking and bubble generation due to interactions between boundary-layers (BL) and free-surfaces (FS) in two phase air water flow regimes. In present work an experiment is performed on isothermal two phase flow through minichannel to investigate the droplet formation mechanism. Effect of dimensional number and superficial velocities of gas and liquid on droplet formation is studied. Results show that when the superficial velocity of gas is increased, the bubble length is observed to increase while increasing the superficial velocity of liquid decreases bubble length. It is also observed that by increasing Reynolds number of dispersed phase (air), bubble length increased while increasing Reynolds number of continuous phase (water) bubble length is observed to decrease. Capillary number also plays a significance role in droplet formation which describe in the paper.