非对称布置液滴在波纹状基底上的聚并过程

基于润滑理论建立在波纹基底上两个含表面活性剂液滴聚并的演化模型，模拟液滴位于波纹基底波峰和波谷处的聚并过程，分析液滴初始间距和基底高度对聚并的影响，并与对称布置液滴进行比较.结果表明：液滴高度随时间呈现五个阶段变化；活性剂浓度在短时间内完成三个阶段变化；初始间距的增大将延长液滴及活性剂聚并时间；增大基底高度将缩短液滴及活性剂聚并时间；非对称液滴相较于对称液滴聚并时间短，聚并速度快.

Coalescence of Asymmetrically-arranged Droplets on Topographic Substrates

Coalescence of two surfactant-containing droplets on a topographic substrate was modeled with lubrication theory considering asymmetrically-arranged configuration. Effects of initial droplet spacing and height of substrate on coalescence evolution were investigated and compared with symmetrically-arranged droplets. It shows that variation of droplet height undergoes five stages, and variation of surfactant concentration experiences three stages in a short period; Coalescing time of droplets and surfactant is extended with increasing droplet spacing while shorten with increasing substrate height; Coalescence time of asymmetric droplets is distinctly less than that of symmetric droplets, resulting in a faster rate of coalescence.