Details

Autor(en) / Beteiligte

• Umansky, M.V.
• Dimits, A.M.
• Joseph, I.
• Omotani, J.T.
• Rognlien, T.D.

Titel

Modeling of tokamak divertor plasma for weakly collisional parallel electron transport

Ist Teil von

• Journal of nuclear materials, 2015-08, Vol.463 (C), p.506-509

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2015

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The parallel electron heat transport in a weakly collisional regime can be represented in the framework of the Landau-fluid model (Hammett et al., 1990). Practical implementation of Landau-fluid transport has become possible due to the recent invention of an efficient non-spectral method for the non-local closure operators (Dimits et al., 2014). Here the implementation of a Landau-fluid based model for the parallel plasma transport is described, and the model is tested for different collisionality regimes against Fokker–Planck simulations. The new method appears to represent the weakly collisional electron transport more accurately than the conventional flux-limiter based models, on the other hand it is computationally efficient enough to be incorporated in comprehensive edge plasma simulations.