COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring. |

University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > The turbulent equilibration of an unstable baroclinic jet

## The turbulent equilibration of an unstable baroclinic jetAdd to your list(s) Download to your calendar using vCal - Esler, G (UCL)
- Monday 08 December 2008, 10:30-11:00
- Seminar Room 1, Newton Institute.
If you have a question about this talk, please contact Mustapha Amrani. The Nature of High Reynolds Number Turbulence The evolution of an unstable baroclinic jet, subject to a small perturbation, is examined numerically in a quasi-geostrophic two-layer channel model. After a period of initial wave growth, wave breaking leads to two-dimensional turbulence within each layer, and to the eventual equilibration of the flow. The equilibrated flow must satisfy certain constraints; its total momentum is conserved, its total energy is bounded and the flow must be realizable via some area preserving (diffusive) rearrangement of the potential vorticity field of the initial flow. A theory is introduced that predicts the equilibrated flow in terms of the initial flow parameters. The idea is that the final state minimizes available potential energy, subject to constraints on the total momentum and total energy, and the further constraint that the potential vorticity changes through a process of complete homogenization within well-delineated regions in each layer. Within a large region of parameter space, the theory is found to accurately predict the cross-channel structure and strength of the equilibrated jet, the regions where potential vorticity mixing takes place, and total eddy mass (temperature) fluxes. This talk is part of the Isaac Newton Institute Seminar Series series. ## This talk is included in these lists:- All CMS events
- Featured lists
- INI info aggregator
- Isaac Newton Institute Seminar Series
- School of Physical Sciences
- Seminar Room 1, Newton Institute
- bld31
Note that ex-directory lists are not shown. |
## Other listsCentre for Smart Infrastructure & Construction Cambridge University Polish Society Cambridge/Africa Collaborative Research Programme Seminar Series## Other talksViral infection dynamics in transplant recipients undergoing immunosuppression First order rigidity of higher rank arithmetic lattices (note the nonstandard day) New approaches to old problems: controlling pathogenic protozoan parasites of poultry Reading and Panel Discussion with Emilia Smechowski Beyond truth-as-correspondence: realism for realistic people Brain tumours: demographics, presentation, diagnosis, treatment |