Generation of stationary and moving vortices in active polar fluids in the planar Taylor-Couette geometry

M. Neef and K. Kruse
Phys. Rev. E 90, 052703 – Published 5 November 2014

Abstract

We study the dynamics of an active polar fluid in the interstitial space between two fixed coaxial cylinders. For sufficiently large expansive or contractive active stresses, the fluid presents roll instabilities of axially symmetric states leading to the spontaneous formation of vortices in the flow field. These vortices are either stationary or travel around the inner cylinder. Increasing the activity further, our numerical solutions indicate the existence of active turbulence that coexists with regular vortex solutions.

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  • Received 27 August 2014

DOI:https://doi.org/10.1103/PhysRevE.90.052703

©2014 American Physical Society

Authors & Affiliations

M. Neef and K. Kruse

  • Theoretische Physik, Universität des Saarlandes, Postfach 151150, 66041 Saarbrücken, Germany

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Vol. 90, Iss. 5 — November 2014

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