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

OFD-130

 

Organisation : Volker Naulin (volker.naulin@risoe.dk) and Jens Juul

Rasmussen (jens.juul.rasmussen@risoe.dk), Department of Optics and

Fluid Dynamics, Risø

 

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

 

Purpose:

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.

 

 

PROGRAM

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.