The Nature of High Reynolds Number Turbulence
| Created: | 2008-11-06 17:20 |
|---|---|
| Institution: | Isaac Newton Institute for Mathematical Sciences |
| Description: | Turbulence is a notoriously difficult subject. Our attempts to understand it tend to consist of an uneasy mix of plausible but uncertain hypotheses, deterministic but highly simplified cartoons, and vast, complex data sets.
For the small scales in turbulence this mixture of hypothesis, theory and experiment is given some unity by the phenomenological picture established by Richardson, Taylor and Kolmogorov. This phenomenology paints a picture of cascades of energy and information from large-scale eddies down to small, and of universal features of these cascades, provided the Reynolds numbers is large enough. In some sense this vision has worked well, providing a convenient conceptual framework within which many empirical observations can be rationalised. However, it was clear from the outset that this was too simplistic a point of view and half a century later there remain many fundamental unanswered questions. For example, exactly what do we mean by an eddy or a cascade, and how should we interpret cascade-like arguments in terms of the evolving morphology of the vorticity field? Indeed, what is the spatial structure of the vorticity field and how does this relate to the observed energy spectra? Read more at: http://www.newton.ac.uk/programmes/HRT/ |
Media items
This collection contains 168 media items.
Media items
2d-3d energy exchanges in a homogeneous thin-aspect-ratio ocean
Straub, D (McGill)
Friday 12 December 2008, 12:00-12:30
Rotating Stratified Turbulence and Turbulence in the Atmosphere and Oceans
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Fri 16 Jan 2009
A mechanism for magnetic field reversals
Petrelis, F (ENS Paris)
Tuesday 02 December 2008, 15:00-16:00
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Mon 29 Dec 2008
A mechanism for turbulent drag reduction by polymers
Adrian, R (Arizona State)
Tuesday 09 September 2008, 14:00-14:20
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Mon 22 Sep 2008
A role of spectral turbulence simulations in developing HPC systems
Yokokawa, M (RIKEN)
Friday 26 September 2008, 15:20-16:05
Prospects of High Performance Computing in Turbulence Research
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Wed 5 Nov 2008
A simple model for solar iso-rotation contours
Balbus, S (ENS Paris)
Thursday 27 November 2008, 15:00-16:00
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Mon 29 Dec 2008
A simple model for the log-law region of a boundary layer
Davidson, P (Cambridge)
Monday 08 September 2008, 16:50-17:10
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Sun 21 Sep 2008
An event-based description of the heat-flux time series in an atmospheric boundary layer
Narasimha, R (Indian Institute of Science)
Thursday 11 September 2008, 15:50-16:10
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Wed 8 Oct 2008
An Introduction to Rotating Stratified Turbulence and Turbulence in the Atmosphere and Oceans
Hunt, J (UCL)
Monday 08 December 2008, 09:20-09:30
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Tue 13 Jan 2009
Angular momentum transport and dynamos in magnetised rotating stratified systems
Tobias, S (Leeds)
Tuesday 09 December 2008, 14:30-15:00
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Thu 15 Jan 2009
Anisotropic pressure and acceleration spectra in uniform shear flow
Tsuji, Y (Nagoya)
Tuesday 30 September 2008, 09:30-10:00
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Wed 22 Oct 2008
Application of statistical mechanics to the modeling of potential vorticity or density mixing
Sommeria, J (LEGI-CNRS)
Thursday 11 December 2008, 16:30-17:00
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Thu 15 Jan 2009
Beyond Lighthill: three ways to stay close to balance
McIntyre, ME (Cambridge)
Wednesday 10 December 2008, 09:30-10:00
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Thu 15 Jan 2009
Bifurcation phenomena in the flow through a sudden expansion in a circular pipe
Seddon, J (Manchester)
Friday 12 September 2008, 12:10-12:30
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Thu 9 Oct 2008
Bottleneck crossover between classical and quantum superfluid turbulence
Nazarenko, SV (Warwick)
Monday 29 September 2008, 14:00-14:30
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Mon 20 Oct 2008
Boundary layer transition by discrete and continuous modes
Durbin, R (Iowa State)
Wednesday 10 September 2008, 11:30-11:50
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Mon 6 Oct 2008
Bounds on the energetics and entropy production of a buoyancy forced ocean
Winters, KB (UC, San Diego)
Friday 12 December 2008, 09:30-10:00
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Fri 16 Jan 2009
Capturing reconnection in Navier-Stokes and resistive MHD dynamics
Bustamante, MD (Warwick)
Wednesday 01 October 2008, 12:10-12:30
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Wed 22 Oct 2008
Cascades, thermalisation and eddy viscosity in helical Galerkin truncated Euler flows
Brachet, ME (ENS, Paris)
Friday 31 October 2008, 14:40-15:40
Euler at Newton: The Inviscid Equations
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Wed 24 Dec 2008
Closure theories for inhomogeneous turbulence
Rubinstein, R (NASA Langley)
Thursday 02 October 2008, 17:40-18:10
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Thu 23 Oct 2008
Clustering of inertial particles in shear flows
Casciola, CM (Sapienza Università di Roma)
Thursday 02 October 2008, 16:30-17:00
Collection: The Nature of High Reynolds Number Turbulence
Institution: Isaac Newton Institute for Mathematical Sciences
Created: Thu 23 Oct 2008