Laminar-Turbulent Patterning in Transitional Flows
Hydrodynamics Laboratory, CNRS UMR 7646, École Polytechnique, F-91128 Palaiseau, France
Received: 31 May 2017 / Revised: 22 June 2017 / Accepted: 23 June 2017 / Published: 29 June 2017
Wall-bounded flows experience a transition to turbulence characterized by the coexistence of laminar and turbulent domains in some range of Reynolds number R
, the natural control parameter. This transitional regime takes place between an upper threshold
above which turbulence is uniform (featureless) and a lower threshold
below which any form of turbulence decays, possibly at the end of overlong chaotic transients. The most emblematic cases of flow along flat plates transiting to/from turbulence according to this scenario are reviewed. The coexistence is generally in the form of bands, alternatively laminar and turbulent, and oriented obliquely with respect to the general flow direction. The final decay of the bands at
points to the relevance of directed percolation and criticality in the sense of statistical-physics phase transitions. The nature of the transition at
where bands form is still somewhat mysterious and does not easily fit the scheme holding for pattern-forming instabilities at increasing control parameter on a laminar background. In contrast, the bands arise at
out of a uniform turbulent background at a decreasing control parameter. Ingredients of a possible theory of laminar-turbulent patterning are discussed.
This is an open access article distributed under the Creative Commons Attribution License
which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
Scifeed alert for new publications
Never miss any articles
matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
Define your Scifeed now
Share & Cite This Article
MDPI and ACS Style
Manneville, P. Laminar-Turbulent Patterning in Transitional Flows. Entropy 2017, 19, 316.
Manneville P. Laminar-Turbulent Patterning in Transitional Flows. Entropy. 2017; 19(7):316.
Manneville, Paul. 2017. "Laminar-Turbulent Patterning in Transitional Flows." Entropy 19, no. 7: 316.
Show more citation formats
Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
[Return to top]
For more information on the journal statistics, click here
Multiple requests from the same IP address are counted as one view.