Abstract
Derivation of macroscopic equations from the simplest dumbbell models is revisited. It is demonstrated that the onset of the macroscopic description is sensitive to the flows. For Peterlin’s approximation [Makromol. Chem. 338, 44 (1961)] to Warner’s finitely extensible nonlinear elastic spring-force model [Ind. Eng. Chem. Fundam. 11, 379 (1972)] (FENE-P), small deviations from the Gaussian solution undergo a slow relaxation before the macroscopic description sets on. Some consequences of these observations are discussed.
- Received 2 February 2000
DOI:https://doi.org/10.1103/PhysRevE.62.1441
©2000 American Physical Society