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Magnetorotational-type instability in Couette-Taylor flow of a viscoelastic polymer liquid.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ogilvie, Gordon I. Potter, Adrian T. |
| Copyright Year | 2008 |
| Abstract | We describe an instability of viscoelastic Couette-Taylor flow that is directly analogous to the magnetorotational instability (MRI) in astrophysical magnetohydrodynamics, with polymer molecules playing the role of magnetic field lines. By determining the conditions required for the onset of instability and the properties of the preferred modes, we distinguish it from the centrifugal and elastic instabilities studied previously. Experimental demonstration and investigation should be much easier for the viscoelastic instability than for the MRI in a liquid metal. The analogy holds with the case of a predominantly toroidal magnetic field such as is expected in an accretion disk, and it may be possible to access a turbulent regime in which many modes are unstable. |
| Starting Page | 074503 |
| Ending Page | 074503 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.condmatjclub.org/uploads/2008/07/jccm_july08_03.pdf |
| PubMed reference number | 18352558v1 |
| Volume Number | 100 |
| Issue Number | 7 |
| Journal | Physical review letters |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Magnetic Fields Polymers Unstable Medical Device Problem |
| Content Type | Text |
| Resource Type | Article |
