SKM 2023 – wissenschaftliches Programm

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VA: Fachverband Vakuumphysik und Vakuumtechnik

VA 1: Vacuum Technology: New Developments and Applications

VA 1.2: Vortrag

Montag, 27. März 2023, 10:00–10:30, HSZ 301

Transient modeling of neutral gas flow in particle exhaust system of fusion reactors — •Christos Tantos, Stylianos Varoutis, and Christian Day — Karlsruhe Institute of Technology, Karlsruhe, Germany

In the present work the transient response of the neutral gas flows inside the geometrical complex particle exhaust systems of fusion reactors is studied. In this study the particle exhaust system of DEMO fusion reactor is investigated in a wide range of the operating conditions. The transient flow behavior is analyzed by solving the Boltzmann equation by applying kinetic models supplemented with the Discrete Velocity Method (DVM). The time of the neutral gas flow establishment is studied as a function of the initial divertor conditions as well as the pumping capability of the vacuum pumps. In addition, the effect of the intermolecular interaction law on the transient distributions of the neutrals gas flow quantities is also investigated. The analysis shows that the applied deterministic methodology allows a computationally efficient transient study of the neutral gas dynamics in the particle exhaust of the future fusion reactors.