Research Initiation Award: Experimental and Numerical Investigation of the Binary Drop Collisions (REU Supplement W/M/D)

提出了一种非混相粘性液体环境中两液滴碰撞的实验和数值研究方法。在不同的韦伯数、雷诺数、液滴尺寸比、周围流动特性和冲击参数下，液滴的弹跳、聚并、分离和破碎将被可视化。通过改进先前开发的代码，将对两个液滴在不混溶的粘性液体中的正面碰撞进行数值模拟。对液滴形状和液滴内部流场的预测结果与实验结果进行了比较。该研究将有助于更好地理解和预测大气雨滴的形成、液-液萃取、乳液聚合、密集喷雾系统和材料生产中的一些过程。

An experimental and numerical study of collision between two liquid drops in an immiscible viscous liquid environment is proposed. The drop bouncing, coalescence, separation and shattering will be visualized for different Weber numbers, Reynolds numbers, drop size ratios, surrounding flow characteristics and impact parameters. The head-on collision of two liquid drops in an immiscible viscous liquid will be numerically simulated, by improving a previously developed code. The predictions on drop shape and drop internal flow field will be compared to experiments. The proposed study will be useful to better understand and predict atmospheric rain drop formation, liquid-liquid extraction, emulsion polymerization, dense spray systems and several processes in material production.