Spatiotemporal rheochaos in nematic hydrodynamics.
Motivated by recent observations of rheochaos in sheared wormlike micelles, 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.
Department of Physics, Indian Institute of Science, Bangalore 560012, India. buddho@physics.umass.edu
Buddhapriya
B
Chakrabarti
Moumita
M
Das
Chandan
C
Dasgupta
Sriram
S
Ramaswamy
A K
AK
Sood