Plasma turbulence, anomalous transport, and numerical modeling


Tuesday December 5 – Thursday December 7, 2000


Location:             Department of Optics and Fluid Dynamics

Risø National Laboratory

DK-4000 Roskilde


Meeting Room



Organisation : Volker Naulin ( and Jens Juul

Rasmussen (, Department of Optics and

Fluid Dynamics, Risø


Estimated number of participants 15 (incl. 10 PhD students)



Discuss the status of the modeling of plasma turbulence and the associated anomalous transport. In particular we will focus on the numerical modeling. There will be tutorial lectures on turbulence, transport, zonal flow generations and numerical methods.


The program will be very informal with time for discussions of specific problems

In addition to the overview/tutorial lectures by Volker Naulin, Anders Nielsen, Poul Michelsen, Jens Juul Rasmussen, and NN, we suggest that the participating PhD-students and others give talks presenting their work, results, and problems.


The overview talks will cover:

Turbulence in general.

Turbulent transport and mean flow generation

Numerical investigations of vortex dynamics and turbulence in 2D flows

Numerical modeling of turbulence in toroidal devices

Numerical methods: spectral methods, finite difference methods, upwinding etc

Status of nuclear fusion research


Please contact the organisers for further information and

registration. Funding is available for covering local expenses for a

limited number of students.




Plasma turbulence, anomalous transport, and numerical modeling


Tuesday December 5 – Thursday December 7, 2000



Tuesday, December 5.



10:00 – 12:00               Jens Juul Rasmussen: “Introduction, turbulence in fluids and plasmas”


12:00 – 13:00               Lunch


                                    Chair: Bjarne Stenum


13.00 – 14:30              Anders Nielsen: “Vortex dynamics and turbulence in two-dimensional flows”


14:30 – 14:50               Coffee


14:50 – 15:30               Fridolin Okkels: “Shell models for turbulence”


15:30 – 16:10               Anders Andersen: “The bathtub vortex”




Wednesday, December 6.


                                    Chair: Poul Michelsen


9:30 – 10:30                 Volker Naulin: “Formation of flows out of turbulence in fluids and plasmas”


10:30 – 11:45               Volker Naulin: “Physics of  drift-Alfvén turbulence ”


11:45 – 12:45               Lunch


                                    Chair: Jens Juul Rasmussen


12:45 – 14:00               Poul Michelsen: “Status of the fusion research”


14:00 – 14:50               Søren Korsholm: “Reflectometry measurements of turbulence in MAST”


14:50 – 15:10               Coffee


15:10 – 15:50               Dietmar Block: "Influencing transport? - latest results, future prospects"


15:50 – 16:30               Jacob Sparre Andersen: "Finite Size Lyapunov Exponents"


16:30 – 17:10               Eduard Kontar: “TBA”


17:10 – ?                      Get together beer.



Thursday, December 7.


                                    Chair: Anders Nielsen


9:30 – 10:10                 Johan Anderson: "Effects of elongation and electron trapping on ITG modes"


10:10 – 10:50            Robert Moestam: "The methods of the fluxtube code DALFTI"


10:50 – 11:30               Gloria Falchetto: "Global modelling of tokamak microinstabilities using gyrokinetic equations"


11:30 – 12:45               Lunch


                             Chair: Volker Naulin  


12:45 – 15:00               Discussions: Numerical modelling of plasma turbulence: methods, codes, diagnostics etc.