Göttingen 2025 – scientific programme
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P: Fachverband Plasmaphysik
P 10: Poster Session I
P 10.21: Poster
Tuesday, April 1, 2025, 16:15–18:15, ZHG Foyer 1. OG
Calculating non-axisymmetric heat loads on plasma-facing components from infrared measurements in W7-X — •Sebastian Thiede1, Marcin Jakubowski1, Yu Gao1, and Peter Manz2 — 1Max-Planck-Institut für Plasmaphysik, Teilinstitut Greifswald, Germany — 2Institut für Physik, Universität Greifswald, Greifswald, Germany
The edge topology of the Wendelstein 7-X stellarator has a complicated 3D structure. This is also true in particular for the deposited heat on plasma-facing components (PFCs). Local heat flux patterns are a valuable source of information for edge physics. The C++ code DELVER was newly developed to infer the surface heat flux distribution on PFCs from infrared measurements. For cuboid divertor tiles, consisting of multiple material layers, it uses an implicit finite-difference approach and an operator splitting technique to calculate this heat flux. It features arbitrary problem dimension, orthotropic material properties that can be arbitrary functions of temperature, non-equidistant orthogonal grids and flexible boundary conditions. A python interface was also developed for more convenient usage. DELVER has been tested against a simple analytical case, other codes, and was assessed on experimental data from W7-X.
Keywords: thermographic inversion; heat flux; Wendelstein 7-X; W7-X; DELVER