Isaac Newton Institute for Mathematical Sciences
Turbulence
January - June 1999
Organisers: GF Hewitt (Imperial College), PA Monkewitz (Lausanne), N Sandham (QMW), JC Vassilicos (Cambridge)
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Research Programme on Turbulence Symposium on INTERMITTENCY Isaac Newton Institute for Mathematical Sciences, Cambridge, UK in Association with ERCOFTAC June 21-24, 1999 |
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Background
Organisation
Programme
(updated 20.05.99) Further
Information
Different turbulence problems are encountered in different non-linear systems described mathematically by different partial differential equations (PDE) or systems of ordinary differential equations (ODE). In the world of PDEs and ODEs the Navier-Stokes equations and Navier-Stokes turbulence are a notable example. Nevertheless, the dynamics of many non-linear systems gravitate around a few common central themes, intermittency, order/coherence and disorder. These features affect scalings and lead to deviations from gaussianity. Intermittency may be the universal outcome of a large class of non-linear systems, however the universality properties of specific non-linear systems, that is the dependencies of the intermittent structure on initial and boundary conditions, remain open questions. What is the appropriate kinematic description of intermittency, and how different is it for different non-linear systems, different boundary and initial conditions? The challenge is that a general kinematic description of intermittency should encompass both order and disorder and mixtures of both. Finally, what are the dynamics of intermittency and the mechanisms that create it? To what extent and in what sense is intermittency related to deviations from self-similar dynamics and to dissipative properties of the non-linear system? What are self-similar dynamics and what are their dissipative properties?
This Symposium will consider the mathematical properties of intermittency as a feature of the Navier-Stokes equations and other nonlinear dynamical systems.
The Symposium is being organised by J.C. Vassilicos in collaboration with the other Organisers of the Programme
Monday 21 June
09.00-10.00 Registration
10.00-10.05 Introduction by Professor HK Moffatt
10.05-10.50 A Tsinober (Tel Aviv) On the origins of intermittency in real turbulent flows
10.50-11.15 Coffee
11.15-12.00 P Constantin (Chicago) TBA
12.00-12.45 G Eyink (Arizona) Intermittency in turbulence: what is it and does it matter?
12.45-14.00 Lunch
14.00-14.45 F Busse (Bayreuth) Phase turbulence induced by heteroclinic cycles
14.45-15.30 A Vulpiani (Rome) Exit time approach as a probe for Lagrangian and Eulerian intermittency
15.30-16.00 Tea
16.00-16.45 R Temam (Paris Sud) Control of turbulent flows under unknown disturbances
16.45-17.30 JC Vassilicos (Cambridge) Wind tunnel turbulence and intermittency behind a 3-D fractal grid
Tuesday 22 June
09.00-09.45 A Newell (Warwick) TBA
09.45-10.30 V Yakhot (Princeton) TBA
10.30-11.00 Coffee
11.00-11.45 K Gawedzki (Paris) Turbulent advection and breakdown of Lagrangian flow
11.45-12.30 G Falkovich (Weizmann Inst) TBA
12.30-14.00 Lunch
14.00-14.45 U Frisch (Nice Observatory) Pdfs of derivatives and increments for Burgers turbulence
14.45-15.30 JG Brasseur (Pennsylvania State) Physical-scale-space dynamics of intermittent Burgers shocklets
15.30-16.00 Tea
16.00-16.45 M Jensen (Copenhagen) Inverted structure functions
16.45-18.00 Posters & Wine Reception
Wednesday 23 June
09.00-09.45 K Sreenivasan (Yale) Small-scale by any name does not scale the same
09.45-10.30 S Ciliberto (ENS Lyon) Scaling law of boundary layer of turbulence
10.30-11.00 Coffee
11.00-11.45 A Arneodo (Bordeaux) Revealing the non-self-similarity of the energy cascading process in fully developed turbulence
11.45-12.30 J Jimenez (Madrid) Cascades and structures
12.30-14.00 Lunch
14.00-14.45 S Kida (Nagoya) TBA
14.45-15.30 K Ohkitani (Kyoto) Analytic ODE approach for the enstrophy of 3D Euler flows
15.30-16.00 Tea
16.00-16.45 C Doering (Michigan) Anomalous scaling and regularity of the Navier-Stokes equation
16.45-18.00 Posters
19.30 Conference Dinner at Sidney Sussex College
Thursday 24 June
09.00-09.45 P Tabeling (ENS Paris)
09.45-10.30 W Van der Water (Eindhoven) Angle-dependent structure functions for fully developed turbulence
10.30-11.00 Coffee
11.00-11.45 B Shraiman (Bell Labs) Lagrangian tetrad dynamics and the statistical geometry of turbulence
11.45-12.30 A Pumir (Nice) A numerical study of the Lagrangian dynamics of tetrahedra in turbulence
12.30-14.00 Lunch
14.00-14.45 T Mullin (Manchester) Can we learn anything from chaos?
14.45-15.30 J Lumley (Cornell) Low-dimensional models of the wall region and intermittency
This Symposium will consist of:
- Invited lectures
- Contributed papers
- Discussion sessions
Confirmed Invited Lecturers:
A Arneodo (Bordeaux, France)
J.G. Brasseur (Penn State, USA)
F.H. Busse (Bayreuth, Germany)
S. Ciliberto (ENSL, France)
P. Constantin (Chicago, USA)
G. Eyink (Arizona, USA)
G. Falkovich (Weizmann, Israel)
U. Frisch (Nice, France)
J. Jiménez (Madrid, Spain)
A. Leonard (Caltech, USA)
J.L. Lumley (Cornell, USA)
A. Newell (Warwick, UK)
K. Ohkitani (Kyoto, Japan)
P. Tabeling (ENS, Paris, France)
R. Temam (Indiana, USA)
A. Tsinober (Tel Aviv, Israel)
A. Vulpiani (Rome, Italy)
W. van de Water (Eindhoven, Holland)
V. Yakhot (Princeton, USA)