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http://dx.doi.org/10.1016/j.net.2019.10.026

Simulation of oxygen mass transfer in fuel assemblies under flowing lead-bismuth eutectic  

Feng, Wenpei (School of Physical Sciences, University of Science and Technology of China)
Zhang, Xue (School of Physical Sciences, University of Science and Technology of China)
Chen, Hongli (School of Physical Sciences, University of Science and Technology of China)
Publication Information
Nuclear Engineering and Technology / v.52, no.5, 2020 , pp. 908-917 More about this Journal
Abstract
Corrosion of structural materials presents a critical challenge in the use of lead-bismuth eutectic (LBE) as a nuclear coolant in an accelerator-driven system. By forming a protective layer on the steel surfaces, corrosion of steels in LBE cooled reactors can be mitigated. The amount of oxygen concentration required to create a continuous and stable oxide layer on steel surfaces is related to the oxidation process. So far, there is no oxidation experiment in fuel assemblies (FA), let alone specific oxidation detail information. This information can be, however, obtained by numerical simulation. In the present study, a new coupling method is developed to implement a coupling between the oxygen mass transfer model and the commercial computational fluid dynamics (CFD) software ANSYS-CFX. The coupling approach is verified. Using the coupling tool, we study the oxidation process of the FA and investigate the effects of different inlet parameters, such as temperature, flow rate on the mass transfer process.
Keywords
Liquid metal cooled reactor; Coupling method; Oxygen mass transfer;
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