Göttingen 2025 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 17: Poster Session II

P 17.19: Poster

Mittwoch, 2. April 2025, 16:15–18:15, ZHG Foyer 1. OG

Thermal-Hydraulic Modelling of Plasma Facing Components using OpenFOAM — •Ahmet KILAVUZ^{1, 2}, Rudolf Neu^{1, 2}, Jeong-Ha You^{1, 3}, and Boštjan Končar⁴ — ¹Max Planck Institute for Plasma Physics, Garching, Germany — ²Technical University of Munich, Garching, Germany — ³University of Ulm, Ulm, Germany — ⁴Jožef Stefan Institute, Ljubljana, Slovenia

Plasma-facing components, like divertor targets in fusion reactors, operate under extreme thermal and hydraulic conditions, including high heat and mass fluxes and elevated pressures. Under such conditions, boiling phenomena occur in cooling channels, and boiling models are highly sensitive to flow conditions, complicating the creation of accurate models. OpenFOAM, an open-source CFD software, provides a customizable platform for developing these models. This study develops and evaluates conjugated heat transfer models in OpenFOAM for divertor-relevant conditions. Material properties were included as a function of temperature. The solver results were compared to ANSYS Fluent predictions, experimental measurements, and empirical correlations. The agreement between the two solvers was observed for temperature and velocity predictions, including armor surface and inner pipe temperatures, velocity profiles, and volume fractions. Both solvers aligned well with experimental data. Differences between single-phase model predictions and experimental data highlight the need to incorporate boiling effects for accurate thermal predictions in plasma-facing components.

Keywords: Divertor Targets; Plasma Facing Components; Nuclear Thermal-hydraulics; Conjugate Heat Transfer; Computational Fluid Dynamics