Stretching of polymers in a turbulent environment
arXiv:nlin/0201035 · doi:10.1016/S0010-4655(02)00339-9
Abstract
The interaction of polymers with small-scale velocity gradients can trigger a coil-stretch transition in the polymers. We analyze this transition within a direct numerical simulation of shear turbulence with an Oldroyd-B model for the polymer. In the coiled state the lengths of polymers are distributed algebraically with an exponent alpha=2 gamma-1/De, where gamma is a characteristic stretching rate of the flow and De the Deborah number. In the stretched state we demonstrate that the length distribution of the polymers is limited by the feedback to the flow.
References in corpus (1)
Cited by in corpus (12)
- Statistics of tumbling of a single polymer molecule in shear flow
- Single polymer dynamics: coil-stretch transition in a random flow
- Two-dimensional turbulence of dilute polymer solutions
- Numerical study of polymer tumbling in linear shear flows
- Stretching of polymers around the Kolmogorov scale in a turbulent shear flow
- Polymer transport in random flow
- Statistics of polymer extensions in turbulent channel flow
- Two-way coupling of FENE dumbbells with a turbulent shear flow
- Finite Extension of Polymers in Turbulent Flow
- Deformation of a flexible polymer in a random flow with long correlation time
- Delay of Disorder by Diluted Polymers
- Effect of internal friction on the coil-stretch transition in turbulent flows