2006/08/07 by Sarah C. Case, Case, Sarah C., Sidney R. Nagel +1
Earth and Planetary Sciences · Engineering · Materials Science · #Electrohydrodynamics and Fluid Dynamics #FOS: Physical sciences #Pickering emulsions and particle stabilization #Soft Condensed Matter (cond-mat.soft) #nanoparticles nucleation surface interactions
paper · pdf · doi:10.48550/arxiv.cond-mat/0608140
openalex publication_date 2006/08/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In selective withdrawal, fluid is withdrawn through a nozzle suspended above the flat interface separating two immiscible, density-separated fluids of viscosities νupper and νlower = λνupper. At low withdrawal rates, the interface gently deforms into a hump. At a transition withdrawal rate, a spout of the lower fluid becomes entrained with the flow of the upper one into the nozzle. When λ= 0.005, the spouts at the transition are very thin with features that are over an order of magnitude smaller than any observed in the humps. When λ= 20, there is an intricate pattern of hysteresis and a spout appears which is qualitatively different from those seen at lower λ. No corresponding qualitative difference is seen in the hump shapes.