论文标题
在抗瑞士顿配置中长悬浮液滴的运动
The motion of long levitating drops in tubes in an anti-Bretherton configuration
论文作者
论文摘要
在他的开创性论文中，布雷瑟顿[J. Fluid Mech。，10：166（1961）]研究了毛细管中长气泡的运动，这是许多两相流量系统中遇到的情况。在这里，我们在实验和数字上揭开了负构型的揭幕，其中由液体塞的破裂形成的长液滴稳定在毛细管中稳定运输，并被流动诱导的空气垫所包围。经过仔细的理论和数值分析，我们证明了滴剂和润滑空气膜的形状让人联想到布雷顿的计算，并且可以从适应的分析理论中推断出来。这项工作为在没有墙壁污染和摩擦的微流体系统中的快速运输方面开辟了巨大的观点。
In his seminal paper, Bretherton [J. Fluid Mech., 10:166 (1961)] studied the motion of long bubbles in capillary tubes, a situation encountered in many two-phase flow systems. Here, we unveil experimentally and numerically the negative configuration, wherein a long liquid drop formed by the rupture of a liquid plug is stably transported in a capillary tube and surrounded by a flow-induced air cushion. After a careful theoretical and numerical analysis of the drop formation process, we show that the shape of the drop and lubricating air film is reminiscent of Bretherthon's calculation and can be inferred from an adapted analytical theory. This work opens tremendous perspectives for drop fast transport in microfluidic systems without walls contamination and friction.
