Rarefied vapor modelling for a closed liquid metal pool-type divertor

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Presentation transcript:

Rarefied vapor modelling for a closed liquid metal pool-type divertor Liquid metal (LM) divertors among the strategies to address the heat exhaust problem in future fusion reactors; One of the possible designs is closed divertor of pool-type; Transport of the metal evaporated from the pool must be evaluated, including: Condensation on the walls; Leakage towards the main plasma chamber. 2D DSMC model is proposed and applied to a reference DTT scenario; Model is suitable for supporting the pre-conceptual design. Actual shape and temperatures of the walls considered; Vapor expansion is described, including shocks; Larger density in OEC than in ODC (effective differential pumping).