Nonlinear elastic polymers in random flow

• Type: Article in International Scientific Journal
• Date: 2005

Authors

Afonso, MM (Author) Other; Vincenzi, D (Author) Other

Journal

Title: Journal of Fluid Mechanics

Vol. 540

Pages: 99-108

ISSN: 0022-1120

Publisher: Cambridge University Press

Indexing

ISI Web of Knowledge - 24 Citations

Scopus - 32 Citations

Other information

Authenticus ID: P-00N-NKY

DOI: 10.1017/s0022112005005951

Abstract (EN): Polymer stretching in random smooth flows is investigated within the framework of the FENE dumbbell model. The advecting flow is Gaussian and short-correlated in time. The stationary probability density function of polymer extension is derived exactly. The characteristic time needed for the system to attain the stationary regime is computed as a function of the Weissenberg number and the maximum length of polymers. The transient relaxation to the stationary regime is predicted to be exceptionally slow in the proximity of the coil-stretch transition.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10