O ct 2 00 4 Polymer transport in random flow

  title={O ct 2 00 4 Polymer transport in random flow},
  author={Antonio Celani and Stefano Musacchio and Dario Vincenzi},
The dynamics of polymers in a random smooth flow is investigated in the framework of the Hookean dumbbell model. The analytical expression of the time-dependent probability density function of polymer elongation is derived explicitly for a Gaussian, rapidly changing flow. When polymers are in the coiled state the pdf reaches a stationary state characterized by power-law tails both for small and large arguments compared to the equilibrium length. The characteristic relaxation time is computed as… CONTINUE READING