Solitary vortex pairs in viscoelastic couette flow
Physical Review Letters, ISSN: 1079-7114, Vol: 78, Issue: 8, Page: 1460-1463
1997
- 83Citations
- 26Captures
- 5Mentions
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Article Description
We report experimental observation of a localized structure, which is of a new type for dissipative systems. It appears as a solitary vortex pair (“diwhirl”) in Couette flow with highly elastic polymer solutions. In contrast to the usual solitons the diwhirls are stationary. It is also a new object in fluid dynamics—a pair of vortices that build a single entity. The diwhirls arise as a result of a purely elastic instability through a hysteretic transition at negligible Reynolds numbers. It is suggested that the vortex flow is driven by the same forces that cause the Weissenberg effect. © 1997 American Physical Society.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0001471754&origin=inward; http://dx.doi.org/10.1103/physrevlett.78.1460; https://link.aps.org/doi/10.1103/PhysRevLett.78.1460; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.78.1460/fulltext; http://link.aps.org/article/10.1103/PhysRevLett.78.1460; http://link.aps.org/doi/10.1103/PhysRevLett.78.1460; http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.78.1460
American Physical Society (APS)
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