Elastocapillary flows in flexible tubes

摘要: Interactions between capillary and elastic effects are relevant to a variety of applications from micro- nano-scale manufacturing biological systems. In this work, we investigate flows in flexible, millimeter-scale cylindrical tubes. We demonstrate that surface tension can cause sufficiently flexible tubes collapse coalesce spontaneously through non-axisymmetric buckling, develop criteria for the initial deformation complete circular tube. Experimental results rise evaporation liquid tube presented, several regimes seen equilibrium state deforming under pressure. Deformations walls measured different compared with shell theory model. Analysis experimental show despite complex deformed shapes structures, elastocapillary length used previous literature flat plates sheets be predict behavior