title: Elastically driven surface plumes in rimming flow of a non-Newtonian fluid.
abstract: A polymer solution partially filling a rotating horizontal drum undergoes an elastically driven instability at low Reynolds numbers. This instability manifests itself through localized plumelike bursts, perturbing the free liquid surface. Here we present an expanded experimental account regarding the dynamics of individual plumes and the statistics pertaining to the complex collective interaction between plumes, which leads to plume coagulation. We also present a detailed description of an optical technique that enables the visualization and measurement of surface perturbations in coating flows within a rotating horizontal drum.
authors.affiliation: Department of Physics of Complex Systems, The Weizmann Institute of Science, Rehovot 76100, Israel. gabriel.seiden@weizmann.ac.il
authors.forename: Gabriel
authors.initials: G
authors.lastname: Seiden
authors.forename: Victor
authors.initials: V
authors.lastname: Steinberg
mesh_terms: D003198:Computer Simulation; D055119:Elastic Modulus; D008956:Models, Chemical; D017711:Nonlinear Dynamics; D012212:Rheology / Q000379:methods*; D012996:Solutions / Q000737:chemistry*; D017155:Wettability
chemical_list: D012996:Solutions