All Title Author
Keywords Abstract

Physics  2002 

Stretching of polymers in a turbulent environment

DOI: 10.1016/S0010-4655(02)00339-9

Full-Text   Cite this paper   Add to My Lib


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.


comments powered by Disqus

Contact Us


微信:OALib Journal