Two-dimensional active polar semiflexible polymer under shear flow

Abstract

The nonequilibrium structural and dynamical properties of semiflexible active polar polymers subject to linear flow are studied by numerical simulations. Filaments are confined in two dimensions and immersed in a fluid described by the Brownian Multiparticle Collision Dynamics approach. The applied shear flow causes conformational changes of a polymer, aligns it along the flow direction, and induces a tumbling motion at large flow rates. In an intermediate, activity-dependent shear-rate regime, a characteristic scaling exponent for the mean-square end-to-end distance along the gradient direction is observed. This exponent appears to be determined by the semiflexibility of the polymer. The tumbling dynamics exhibits a characteristic time, with a stronger dependence on the Weissenberg number than that of flexible active or passive polymers. Activity strongly impacts the rheological properties of the semiflexible polymers, and even implies a negative viscosity for weak flows. At very large values of the shear rate, shear dominates over activity and passive-polymer behavior is assumed.

Accepted for publication in J. Chem. Phys

References in corpus (39)

• Spontaneous motion in hierarchically assembled active matter
• Rheology of Active-Particle Suspensions
• Microrheology, stress fluctuations and active behavior of living cells
• Transport coefficients of a mesoscopic fluid dynamics model
• Self-propelled Worm-like Filaments: Spontaneous Spiral Formation, Structure, and Dynamics
• Multi-Particle Collision Dynamics -- a Particle-Based Mesoscale Simulation Approach to the Hydrodynamics of Complex Fluids
• Non-equilibrium mechanics and dynamics of motor activated gels
• Semidilute Polymer Solutions at Equilibrium and under Shear Flow
• The physics of active polymers and filaments
• Globule-like conformation and enhanced diffusion of active polymers
• Statistics of tumbling of a single polymer molecule in shear flow
• Conformational properties of active semiflexible polymers
• Small activity differences drive phase separation in active-passive polymer mixtures
• Unusual swelling of a polymer in a bacterial bath
• Structure and dynamics of a self-propelled semiflexible filament
• Active polymer rings: activity-induced collapse and dynamical arrest
• Phase Separation by Entanglement of Active Polymerlike Worms
• Tumbling of polymers in semidilute solution under shear flow
• Rheology of Active Polymer-like T. Tubifex Worms
• \textit{C. elegans} collectively forms dynamical networks
• Numerical study of polymer tumbling in linear shear flows
• Dynamics of a homogeneous active dumbbell system
• Dynamics of Semiflexible Polymers in a Flow Field
• Effects of inertia on conformation and dynamics of tangentially-driven active filaments
• Tangentially Driven Active Polar Linear Polymers -- An Analytical Study
• The cost of swimming in generalized Newtonian fluids: Experiments with C. elegans
• Tumbling motion of a single chain in shear flow: a crossover from Brownian to non-Brownian behavior
• Dynamics of Active Polar Ring Polymers
• Statistical properties of a tangentially driven active filament
• Semiflexible polymers under external fields confined to two dimensions
• Dilute polymer solutions under shear flow: comprehensive qualitative analysis using a bead-spring chain model with a FENE-Fraenkel spring
• Excluded volume effects on tangentially driven active ring polymers
• Characteristic features of self-avoiding active Brownian polymers under linear shear flow
• Wall-anchored semiflexible polymer under large amplitude oscillatory shear flow
• Density and inertia effects on two-dimensional active semiflexible filament suspensions
• Tethered Semiflexible Polymer under Large Amplitude Oscillatory Shear
• Active Polymer Behavior in Two Dimensions: A Comparative Analysis of Tangential and Push-Pull Models
• Activity-enhanced shear thinning of flexible linear polar polymers
• Tethered flexible polymer under oscillatory linear flow