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Electro-fluid analysis of a molten-salt electrorefiner with rotating cruciform anode baskets
Authors:K R Kim  S Y Choi  D H Ahn  S Paek  H S Lee  I S Hwang
Institution:(1) Korea Atomic Energy Research Institute, 1045 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Korea;(2) Seoul National Univ, San 56-1, Sillim-dong, Gwanak-gu, Seoul, 151-742, Korea
Abstract:A computational fluid dynamics (CFD)-based multiphysics model of a molten-salt electrorefiner is presented for the computational electro-fluid analysis. A target model of the electrorefining cell presented here has a structure arranged concentrically with the cathode annulus surrounding a rotating cruciform anode inside it. This comprehensive approach of a multiphysics model solves the convective and diffusive transport of ionic uranium and allows for a prediction of the concentration present in the LiCl–KCl eutectic electrolyte between the electrodes at a current driven condition. The coupling of the local overpotential distribution and uranium concentration gradient makes it possible to predict the local current density distribution at the electrode surfaces.
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