Back to Search
Start Over
Subcritical turbulent condensate in rapidly rotating Rayleigh-B\'enard convection
- Source :
- J. Fluid Mech. Rapids 2019
- Publication Year :
- 2019
-
Abstract
- The possibility of subcritical behaviour in the geostrophic turbulence regime of rapidly rotating thermally driven convection is explored. In this regime a non-local inverse energy transfer may compete with the more traditional and local direct cascade. We show that, even for control parameters for which no inverse cascade has previously been observed, a subcritical transition towards a large-scale vortex state can occur when the system is initialized with a vortex dipole of finite amplitude. This new example of bistability in a turbulent flow, which may not be specific to rotating convection, opens up new avenues for studying energy transfer in strongly anisotropic three-dimensional flows.<br />Comment: 12 pages, 6 figures
- Subjects :
- Physics - Fluid Dynamics
Subjects
Details
- Database :
- arXiv
- Journal :
- J. Fluid Mech. Rapids 2019
- Publication Type :
- Report
- Accession number :
- edsarx.1901.04269
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1017/jfm.2019.58