In:
Contributions to Plasma Physics, Wiley, Vol. 60, No. 5-6 ( 2020-06)
Abstract:
SOLPS‐ITER L‐mode‐like simulations with the full set of currents and drift velocities activated, and fluid neutrals have been carried out to interpret experimental results obtained in AUG. Drifts are critical to quantitatively reproduce the experimental results; however, simulations without drifts can also reproduce some trends qualitatively. The magnitude and dependence of the peak heat flux onto both targets on the upstream collisionality are, in general, in quantitative agreement within uncertainties with infrared thermography measurements in favourable field direction. The onset of power detachment is observed. In unfavourable toroidal field direction, a more symmetrical inner/outer target solution with regards to the power distribution is predicted, in agreement with experimental observations. However, also in unfavourable toroidal field direction, insufficient power is dissipated in the simulations and therefore q peak, inn is overpredicted by up to a factor of 4 and q peak, out by up to a factor of 1.5. The largest contribution to the sources due to radial transport in the energy balance equation is the radial divergence of the energy flux due to V E × B .
Type of Medium:
Online Resource
ISSN:
0863-1042
,
1521-3986
DOI:
10.1002/ctpp.v60.5-6
DOI:
10.1002/ctpp.201900166
Language:
English
Publisher:
Wiley
Publication Date:
2020
detail.hit.zdb_id:
2018082-2
SSG:
12
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