TY - JOUR
T1 - Steady States of Sheared Active Nematics
AU - Cui , Zhenlu
AU - Zeng , Xiaoming
AU - Su , Jianbing
JO - Advances in Applied Mathematics and Mechanics
VL - 1
SP - 75
EP - 86
PY - 2014
DA - 2014/06
SN - 6
DO - http://doi.org/10.4208/aamm.12-m12109
UR - https://global-sci.org/intro/article_detail/aamm/5.html
KW - Asymptotic expansion, active liquid crystals, hydrodynamics.
AB - <p style="text-align: justify;">A continuum hydrodynamic model has been used to characterize flowing
active nematics. The behavior of such a system subjected to a
weak steady shear is analyzed. We explore the director structures and
flow behaviors of the system in flow-aligning and flow tumbling regimes.
Combining asymptotic analysis and numerical simulations, we extend previous
studies to give a complete characterization of the steady states for both contractile and
extensile particles in flow-aligning and flow-tumbling regimes. &nbsp;Another
key prediction of this work is the role of the system size on the steady
states of an active nematic system: if the system size is small, the velocity
and the director angle files for both flow-tumbling contractile and extensile
systems are similar to those of passive nematics; if the system is big, the
velocity and the director angle files for flow-aligning contractile systems
and tumbling extensile systems are akin to sheared passive cholesterics while
they are oscillatory for flow-aligning extensile and tumbling contractile systems.</p>