论文标题
毛细血管结合和分解的动力学：准二维列和各向同性液滴
Dynamics of capillary coalescence and breakup: quasi-two-dimensional nematic and isotropic droplets
论文作者
论文摘要
我们第一次观察到在液滴合并时从桥上形成了小卫星液滴。使用在近视相关的两相区域中使用Hele-shaw细胞进行研究。在以前关于合并的工作中，人们认为在合并开始之前，存在液滴两侧（外桥）两侧的外流体连接区域之间的桥梁。合并开始后，出现了连接两个液滴的桥（液滴桥），外桥被打破。我们首次表明，当合并后液滴桥和外桥都可以存在时，存在聚结。该基础改变了合并过程。在第一个合并期间，外桥的大小减小，液滴桥的大小增加。在第二阶段，外桥随着捏合的形成，尖端端域的形成，二次不稳定性，尖端端域的分裂以及卫星液滴的形成而变得不稳定。我们的工作将流体动力学的两个领域与卫星液滴的形成联系在一起。
For the first time we observed formation of small satellite droplets from the bridge at droplet coalescence. Investigations were made using a Hele-Shaw cell in the two-phase region at nematic-isotropic phase transition. In previous works on coalescence it was considered that before start of coalescence there exists a bridge between the outer fluid connecting regions on the two sides of the droplets (outer bridge). After start of coalescence a bridge connecting the two droplets appears (droplet bridge) and the outer bridge is broken. For the first time we have shown that there are coalescence processes when after start of coalescence both the droplet bridge and the outer bridge can exist. This cardinally changes the coalescence process. During the first coalescence stage the size of the outer bridge decreases, the size of the droplet bridge increases. During the second stage the outer bridge becomes unstable with pinch-off, formation of pointed end domains, secondary instability, splitting of pointed end domains and formation of satellite droplets. Our work connects two areas of fluid dynamics: coalescence and breakup with formation of satellite droplets.
