Reduced-resolution RANS approach to grid spacer fuel assemblies

Nuclear Engineering and Design(2020)

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摘要
•Reduced-resolution CFD modelling of grid-spaced fuel assemblies is considered.•A resolution sensitivity study is performed for unblocked flow condition.•Reduced-resolution scheme is selected with a maximum temperature difference of 4%.•Validation is presented using experimental data.•Approach is extended to reactor-scale 127-pin fuel assembly.
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关键词
Grid spacers,Flow blockage,Reduced order RANS,Reduced resolution
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