Stochastic jetting and dripping in confined soft granular flows

界面滴漏：产生单分散液体透镜

Interfacial dripping faucet: generating monodisperse liquid lenses

本文提出界面滴漏现象，通过粘性液体沿不混溶弯月面滑下并周期性断离产生单分散液体透镜，类比单相滴漏并用铺展系数替代表面张力，为界面乳液动力学研究开辟前景。

Opposed flow focusing: evidence of a second order jetting transition

We propose a novel microfluidic "opposed-flow" geometry in which the continuous fluid phase is fed into a junction in a direction opposite the dispersed phase. This pulls out the dispersed phase into a micron-sized jet, which decays into micron-sized droplets. As the driving pressure is tuned to a critical value, the jet radius vanishes as a power law down to sizes below 1 $μ$m. By contrast, the conventional "coflowing" junction leads to a first order jetting transition, in which the jet disappears at a finite radius of several $μ$m, to give way to a "dripping" state, resulting in much larger …

粘弹性聚合物溶液液滴撞击颗粒床的影响

Impact of viscoelastic polymer solution droplets on a granular bed

通过实验研究粘弹性聚环氧乙烷液滴撞击干颗粒床的成坑动力学，发现粘弹性使过渡区出现在更低撞击能量，表明粘弹性改变了撞击能量在液滴变形与颗粒床耗散之间的分配。

Effects of viscoelasticity on droplet dynamics and break-up in microfluidic T-Junctions: a lattice Boltzmann study

The effects of viscoelasticity on the dynamics and break-up of fluid threads in microfluidic T-junctions are investigated using numerical simulations of dilute polymer solutions at changing the Capillary number ($\mbox {Ca}$), i.e. at changing the balance between the viscous forces and the surface tension at the interface, up to $\mbox{Ca} \approx 3 \times 10^{-2}$. A Navier-Stokes (NS) description of the solvent based on the lattice Boltzmann models (LBM) is here coupled to constitutive equations for finite extensible non-linear elastic dumbbells with the closure proposed by Peterlin (FENE-P …