Mesoscale simulations of polymer dynamics in microchannel flows
arXiv:0709.3822 · doi:10.1209/0295-5075/83/34007
Abstract
The non-equilibrium structural and dynamical properties of flexible polymers confined in a square microchannel and exposed to a Poiseuille flow are investigated by mesoscale simulations. The chain length and the flow strength are systematically varied. Two transport regimes are identified, corresponding to weak and strong confinement. For strong confinement, the transport properties are independent of polymer length. The analysis of the long-time tumbling dynamics of short polymers yields non-periodic motion with a sublinear dependence on the flow strength. We find distinct differences for conformational as well as dynamical properties from results obtained for simple shear flow.
References in corpus (7)
- Simulation of a Single Polymer Chain in Solution by Combining Lattice Boltzmann and Molecular Dynamics
- Multi-particle-collision dynamics: Flow around a circular and a square cylinder
- Transport coefficients of a mesoscopic fluid dynamics model
- Dynamics of short polymer chains in solution
- Dynamic regimes of fluids simulated by multiparticle-collision dynamics
- Statistics of tumbling of a single polymer molecule in shear flow
- Transport Coefficients for Stochastic Rotation Dynamics in Three Dimensions
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- Polyelectrolyte Electrophoresis in Nanochannels: A Dissipative Particle Dynamics Simulation
- Dynamics of fibers in a wide microchannel
- Semiflexible polymer conformation, distribution and migration in microcapillary flows
- Statistics of polymer adsorption under shear flow
- Stochastic Rotation Dynamics simulations of wetting multi-phase flows
- Tethered Semiflexible Polymer under Large Amplitude Oscillatory Shear
- Supercoiled ring polymers under shear flow
- HTMPC: A heavily templated C++ library for large scale particle-based mesoscale hydrodynamics simulations using multiparticle collision dynamics