This title appears in the Scientific Report :
2004
Please use the identifier:
http://dx.doi.org/10.1002/ctpp.200410009 in citations.
3D edge modelling and island divertor physics
3D edge modelling and island divertor physics
The paper presents an overview on the state of the art of 3D fluid transport modeling in the boundaries of 3D toroidal confinement devices and on applications to island divertor physics. Typically, such edge configurations are characterized by the coexistence of closed magnetic surfaces, islands and...
Saved in:
Personal Name(s): | Feng, Y. |
---|---|
Sardei, F. / Kisslinger, J. / Grigull, P. / McCormick, K. / Reiter, D. | |
Contributing Institute: |
Institut für Plasmaphysik; IPP |
Published in: | Contributions to plasma physics, 44 (2004) |
Imprint: |
Weinheim
Wiley-VCH
2004
|
DOI: |
10.1002/ctpp.200410009 |
Document Type: |
Journal Article |
Research Program: |
Kernfusion und Plasmaforschung |
Series Title: |
Contributions to Plasma Physics
44 |
Subject (ZB): | |
Publikationsportal JuSER |
The paper presents an overview on the state of the art of 3D fluid transport modeling in the boundaries of 3D toroidal confinement devices and on applications to island divertor physics. Typically, such edge configurations are characterized by the coexistence of closed magnetic surfaces, islands and open stochastic regions, e.g. in helical devices like W7-AS, W7-X, LHD and in tokamaks like TEXTOR-DED. Two main approach branches falling within the current numeric catalogue of the 3D modeling are the finite volume and Monte Carlo methods. They differ essentially in the elementary treatment of the local transport. While in a finite volume method interpolation of the fluid fluxes through the interfaces by appropriate choice of a shape function is essential for the discretization process, the full fluid dynamics are, in a Monte Carlo approach, simulated by means of a local stochastic process, with the fluxes passing through cell boundary surfaces being a net result of the random process. In this paper, we present the numerics and strategies proposed in different models. Concerning the practical applications to a realistic 3D experiment, W7-AS provides not only a practical fully 3D island divertor configuration but also sufficient experimental data for code validation. We present the main simulation results from the 3D edge Monte Carlo code EMC3/EIRENE and discuss the island divertor physics with respect to tokamak divertors. |