TY - JOUR
T1 - Intra-ELM phase modelling of a JET ITER-like wall H-mode discharge with EDGE2D-EIRENE
AU - Harting, D. M.
AU - Wiesen, S.
AU - Groth, M.
AU - Brezinsek, S.
AU - Corrigan, G.
AU - Arnoux, G.
AU - Boerner, P.
AU - Devaux, S.
AU - Flanagan, J.
AU - Järvinen, A.
AU - Marsen, S.
AU - Reiter, D.
AU - JET-EFDA contributors
N1 - Funding Information:
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement number 633053 and from the RCUK Energy Programme [grant number EP/I501045]. The views and opinions expressed herein do not necessarily reflect those of the European Commission.
Publisher Copyright:
© 2014 EURATOM.
PY - 2015/8
Y1 - 2015/8
N2 - Abstract 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 (Δt = 200 μs) temporal evolution of the outer midplane ne and Te 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.
AB - Abstract 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 (Δt = 200 μs) temporal evolution of the outer midplane ne and Te 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.
UR - http://www.scopus.com/inward/record.url?scp=84937734984&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2014.12.023
DO - 10.1016/j.jnucmat.2014.12.023
M3 - Article
AN - SCOPUS:84937734984
SN - 0022-3115
VL - 463
SP - 493
EP - 497
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
M1 - 48754
ER -
