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Implementation of a separate fluid‐neutral energy equation in SOLPS‐ITER and its impact on the validity range of advanced fluid‐neutral models
Author(s) -
Van Uytven Wim,
Blommaert Maarten,
Dekeyser Wouter,
Horsten Niels,
Baelmans Martine
Publication year - 2020
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201900147
Subject(s) - collisionality , divertor , plasma , range (aeronautics) , physics , fusion , nuclear fusion , energetic neutral atom , monte carlo method , ion , equation of state , atomic physics , tokamak , materials science , nuclear physics , thermodynamics , quantum mechanics , linguistics , philosophy , statistics , mathematics , composite material
In plasma edge transport codes for nuclear fusion devices, fluid‐neutral models offer an interesting alternative to the currently used kinetic Monte Carlo simulations, especially for cases of high ion‐neutral collisionality. In this paper, we elaborate a separate neutral energy equation in the state‐of‐the‐art SOLPS‐ITER code suite, which previously assumed perfect ion‐neutral temperature equilibration. Furthermore, we study the coupled plasma‐neutral solutions for a range of divertor operating regimes, proving the validity of these fluid‐neutral models for high‐recycling and detached regimes.