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Article Dans Une Revue European Physical Journal E: Soft matter and biological physics Année : 2018

Enhancement of mixing by rodlike polymers

Résumé

We study the mixing of a passive scalar field dispersed in a solution of rodlike polymers in two dimensions, by means of numerical simulations of a rheological model for the polymer solution. The flow is driven by a parallel sinusoidal force (Kolmogorov flow). Although the Reynolds number is lower than the critical value for inertial instabilities, the rotational dynamics of the polymers generates a chaotic flow similar to the so-called elastic-turbulence regime observed in extensible polymer solutions. The temporal decay of the variance of the scalar field and its gradients shows that this chaotic flow strongly enhances mixing.
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Dates et versions

hal-01834244 , version 1 (10-07-2018)

Identifiants

  • HAL Id : hal-01834244 , version 1

Citer

Stefano Musacchio, Dario Vincenzi, Massimo Cencini, Emmanuel L C Vi M Plan. Enhancement of mixing by rodlike polymers. European Physical Journal E: Soft matter and biological physics, 2018, 41 (7). ⟨hal-01834244⟩
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