Perspectives on viscoelastic flow instabilities and elastic turbulence
Abstract
Viscoelastic fluids are a common subclass of rheologically complex materials that are encountered in diverse fields from biology to polymer processing. Often the flows of viscoelastic fluids are unstable in situations where ordinary Newtonian fluids are stable, owing to the nonlinear coupling of the elastic and viscous stresses. Perhaps more surprisingly, the instabilities produce flows with the hallmarks of turbulence -- even though the effective Reynolds numbers may be or smaller. We provide perspectives on viscoelastic flow instabilities by integrating the input from speakers at a recent international workshop: historical remarks, characterization of fluids and flows, discussion of experimental and simulation tools, and modern questions and puzzles that motivate further studies of this fascinating subject. The materials here will be useful for researchers and educators alike, especially as the subject continues to evolve in both fundamental understanding and applications in engineering and the sciences.
Cite
@article{arxiv.2108.09841,
title = {Perspectives on viscoelastic flow instabilities and elastic turbulence},
author = {Sujit S. Datta and Arezoo M. Ardekani and Paulo E. Arratia and Antony N. Beris and Irmgard Bischofberger and Jens G. Eggers and J. Esteban López-Aguilar and Suzanne M. Fielding and Anna Frishman and Michael D. Graham and Jeffrey S. Guasto and Simon J. Haward and Sarah Hormozi and Gareth H. McKinley and Robert J. Poole and Alexander Morozov and V. Shankar and Eric S. G. Shaqfeh and Amy Q. Shen and Holger Stark and Victor Steinberg and Ganesh Subramanian and Howard A. Stone},
journal= {arXiv preprint arXiv:2108.09841},
year = {2021}
}
Comments
A perspective article based on a virtual workshop of the Princeton Center for Theoretical Sciences that took place in January 2021