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Article Dans Une Revue Physical Review Fluids Année : 2019

Hydrodynamic response of a surfactant-laden interface to a radial flow

Résumé

We study the features of a radial Stokes flow due to a submerged jet directed toward a liquid-air interface. The presence of surface-active impurities confers to the interface an in-plane elasticity that resists the incident flow. Both analytical and numerical calculations show that a minute amount of surfactants is enough to profoundly alter the morphology of the flow. The hydrodynamic response of the interface is affected as well, shifting from slip to no-slip boundary condition as the surface compressibility decreases. We argue that the competition between the divergent outward flow and the elastic response of the interface may actually be used as a practical way to detect and quantify a small amount of impurities.

Dates et versions

hal-02412946 , version 1 (16-12-2019)

Identifiants

Citer

T. Bickel, J.-C. Loudet, G. Koleski, B. Pouligny. Hydrodynamic response of a surfactant-laden interface to a radial flow. Physical Review Fluids, 2019, 4 (12), ⟨10.1103/PhysRevFluids.4.124002⟩. ⟨hal-02412946⟩

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