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Title

Discretization error estimation for EU‐DEMO plasma‐edge simulations using SOLPS‐ITER with fluid neutrals.

Authors

Van Uytven, Wim; Dekeyser, Wouter; Subba, Fabio; Wiesen, Sven; Horsten, Niels; Vervloesem, Nathan; Baelmans, Martine

Abstract

A grid refinement study is performed for mean‐field plasma boundary simulations with fluid neutrals in an EU‐DEMO geometry. In general, grid convergence of the simulations is achieved, with differences between the finest and second‐finest grid of <5% for the majority of the quantities of interest. The estimated discretization errors for the original 96 × 36 grid are mostly in the 4%–25% range. However, it is also shown that exceptions are possible due to the non‐linear nature of plasma boundary codes. Hence, it is advised to regularly perform grid refinement studies on subsets of cases.

Subjects

ATOMIC models; FLUIDS; GEOMETRY

Publication

Contributions to Plasma Physics, 2024, Vol 64, Issue 7/8, p1

ISSN

0863-1042

Publication type

Academic Journal

DOI

10.1002/ctpp.202300125

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