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arXiv · 2404.12904

The MEMENTO code for modelling of macroscopic melt motion in fusion devices

K. Paschalidis·F. Lucco Castello·S. Ratynskaia·P. Tolias·L. Brandt
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Abstract

The MEMENTO (MEtallic Melt Evolution in Next-step TOkamaks) code is a new numerical implementation of the physics model originally developed for the MEMOS-U code with the objective to self-consistently describe the generation of melt and its subsequent large scale dynamics in fusion devices and to assess the damage of metallic reactor armor under powerful normal and off-normal plasma events. The model has been validated in multiple dedicated EUROfusion experiments. MEMENTO solves the heat and phase transfer problem coupled with the incompressible Navier-Stokes equations in the shallow water approximation for the thin liquid film over the solid metal and with the current propagation equations on a domain that features a time-evolving deforming metal-plasma interface. The code utilizes non-uniform and adaptive meshing along with sub-cycling in time facilitated by the AMReX open-source framework as well as AMReX's built-in parallelization capabilities.

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K. Paschalidis, F. Lucco Castello, S. Ratynskaia, P. Tolias, L. Brandt. 2024-04-19. The MEMENTO code for modelling of macroscopic melt motion in fusion devices. https://doi.org/10.1016/j.fusengdes.2024.114603

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