Engineering the Flow of Liquid Two-Phase Systems by Passive Noise Control

Suppressing hydrodynamic instability in coflow two-phase systems is interesting for the continuous fabrication of microfibers, interfacial chemical reactions, and on-chip transport. Though there are plenty of strategies to trigger the convective hydrodynamic instability, ones to suppress it are rare. This study uses an expansion-contraction functional unit to passively reduce the convective noise on the jet interface and extend the convectively unstable jet, so that it does not break up into droplets. By implementing the functional unit repeatedly, a two-phase jet can be extended to a surprising length.