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Spatiotemporal rheochaos in nematic hydrodynamics

Buddhapriya Chakrabarti·Moumita Das·Chandan Dasgupta·Sriram Ramaswamy·A. K. Sood
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Abstract

Motivated by the observation of rheochaos in sheared wormlike micelles [Bandyopadhyay et al., Phys. Rev. Lett, 84 2022, (2000); Europhys. Lett. 56, 447 (2001); Pramana 53, 223 (1999)] we study the coupled nonlinear partial differential equations for the hydrodynamic velocity and order parameter fields in a sheared nematogenic fluid. In a suitable parameter range, we find irregular, dynamic shear-banding and establish by decisive numerical tests that the chaos we observe in the model is spatiotemporal in nature.

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Buddhapriya Chakrabarti, Moumita Das, Chandan Dasgupta, Sriram Ramaswamy, A. K. Sood. 2003-12-22. Spatiotemporal rheochaos in nematic hydrodynamics. https://doi.org/10.1103/physrevlett.92.055501

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