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BWR Fuel Assemblies Physics Analysis Utilizing 3D MCNP Modeling

机译:利用3D MCNP建模的BWR燃料组件物理分析

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MCNP is used to model a partially controlled BWR fresh fuel four assemblies (2x2) system for better understanding BWR fuel behavior and for benchmarking production codes.The impact of the GE14 plenum regions on axial power distribution is observed by comparing against the GE13 axial power distribution, in which the GE14 relative power is lower than the GE13 relative power at the 15~(th) node and at the 16~(th) node due to presence of the plenum regions in GE14 fuel in these two nodes.The segmented rod power distribution study indicates that the azimuthally dependent power distribution is very significant for the fuel rods next to the water gap in the uncontrolled portion.
机译:MCNP用于为部分控制的BWR新鲜燃料四组件(2x2)系统建模,以更好地了解BWR燃料性能并确定生产代码基准。 通过与GE13轴向功率分布进行比较,观察到GE14增压区域对轴向功率分布的影响,其中GE14的相对功率低于第15个节点和第16个节点的GE13相对功率。 )节点,因为这两个节点中存在GE14燃料中的气室区域。 分段杆功率分布研究表明,方位角相关的功率分布对于不受控部分中靠近水隙的燃料杆非常重要。

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