Intra-ELM phase modelling of a JET ITER-like wall H-mode discharge with EDGE2D-EIRENE - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Nuclear Materials Année : 2015

Intra-ELM phase modelling of a JET ITER-like wall H-mode discharge with EDGE2D-EIRENE

Résumé

We present the application of an improved EDGE2D-EIRENE SOL transport model for the ELM phase utilizing kinetic correction of the sheath-heat-transmission coefficients and heat-flux-limiting factors used in fluid SOL modelling. With a statistical analysis over a range of similar type-I ELMy H-mode discharges performed at the end of the first JET ITER-like wall campaign, we achieved a fast (Delta t = 200 mu s) temporal evolution of the outer midplane n(e) and T-e profiles and the target-heat and particle-flux profiles, which provides a good experimental data set to understand the characteristics of an ELM cycle. We will demonstrate that these kinetic corrections increase the simulated heat-flux-rise time at the target to experimentally observed times but the power-decay time at the target is still underestimated by the simulations. This longer decay times are potentially related to a change of the local recycling coefficient at the tungsten target plate directly after the heat pulse.
Fichier non déposé

Dates et versions

hal-01286865 , version 1 (11-03-2016)

Identifiants

Citer

D. M. Harting, S. Wiesen, M. Groth, S. Brezinsek, G. Corrigan, et al.. Intra-ELM phase modelling of a JET ITER-like wall H-mode discharge with EDGE2D-EIRENE. Journal of Nuclear Materials, 2015, 463, pp.493-497. ⟨10.1016/j.jnucmat.2014.12.023⟩. ⟨hal-01286865⟩
19 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More