Abstract
AbstractTwo examples from the dynamics of surfactant‐laden interfacial flow are considered. In the first example, a bubble is rapidly stretched by an imposed flow to form a dumb‐bell shape, then the imposed flow is relaxed, so that the bubble evolves solely under the action of surfactant‐modified surface tension. In the second example, a surfactant‐coated bubble is continually stretched by a steady extensional flow. At sufficiently small strain rates, steady bubble shapes are found, whereas at larger strain rates a long‐wave model of the dynamics predicts behavior that is reminiscent of experimentally observed tip‐streaming. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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