定义 中文名称：栅元 英文名称：lattice cell 定义：堆芯栅格的基本单元，也是堆芯物理计算中要处理的基本单元。一个完整堆芯可以根据分析的需要划分成多种栅元，如燃料栅元、可燃毒物栅元、控制栅元等。 应用学科
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并且，在不含毒物棒情况下，等效栅元可作为组件计算的近似；
Moreover, the equivalent cell calculation may approximately substitute assembly calculation if the assembly has no poison;
棒束栅元单一控制体划分，会使得计算得到的燃料峰值温度等表征严重事故来临时间晚于试验值；
A simplified control volume nodalization of bun-dle, may lead to late coming of predicted peak fuel temperature compared to that of measured;
利用实验数据对计算结果进行了验证，分析了棒棒间隙的减小对稠密栅元内局部流动、传热和相干结构的影响。
The calculation results were validated with experimental data. The effects of diminishing rod-rod gap size on local flow, heat transfer and coherent structure in tight lattice were analyzed.
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