Volume 60, Number 5, December 2002
|Page(s)||704 - 709|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||01 November 2002|
Internal viscoelastic waves in a circular Couette flow of a dilute polymer solution
Department of Physics of Complex Systems
The Weizmann Institute of Science - Rehovot 76100, Israel
2 Department of Physics, University of California - San Diego, CA 92093, USA
Accepted: 16 September 2002
The existence of internal viscoelastic waves below the elastic instability threshold in the circular Couette flow of a polymer solution is predicted. We present results of calculations of the dispersion relation of the waves. These weakly attenuating waves are sustained by a non-uniform elastic stress distribution and should occur in the region of stable stratification of the hoop elastic stresses in any viscoelastic fluid flow with curvilinear trajectories.
PACS: 47.50.+d – Non-Newtonian fluid flows / 83.60.Bc – Linear viscoelasticity / 61.25.Hq – Macromolecular and polymer solutions; polymer melts; swelling
© EDP Sciences, 2002
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