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Study on the Applicability of Computational Models for RANS Simulations of Hydrogen-Xenon Gas Mixtures in Channels

Wang Shunqi, Jiyu, Sun Jun, Sun Yuliang, Sun Jun
2025-07-15 ChinaXiv: chinaxiv-202508.00071 Mixed Source

Small gas-cooled nuclear reactor systems predominantly employ nitrogen-xenon mixtures as the working fluid and core coolant. At the recommended mixing ratio, their Prandtl number (Pr) can be as low as 0.2. The Reynolds-Averaged Navier-Stokes (RANS) approach relies on turbulence models and turbulent …