Quasi One Dimension Modified Computing Method for Multi-Cycle Fuel Management Calculation
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摘要: 提出了一种准一维的修正计算方法,该方法根据不同批次燃料在堆芯中的实际位置进行相对功率修正,外围组件可定义成多批,以考虑边界位置不同的影响。与传统的点堆模型相比,准一维的修正计算方法能更精确地描述多循环实际换料装载情况。用此方法对秦山一期核电厂堆芯的前6个循环进行校核计算,并与单循环三维堆芯燃料管理计算程序RSIM的计算结果比较。结果表明,循环燃耗最大偏差为2.89%,卸料燃耗最大偏差为1.30%,卸料燃耗最大偏差约为点堆模型的1/3。Abstract: A quasi one dimension modified computing method is proposed in this paper.Batch relative powers are modified according to the real batch positions in this method.To consider the influence of different boundary positions,the peripheral assembly can be divided into many batches.Compared with the traditional zero dimension point reactor model,the quasi one dimension modified computing method can more exactly describe the multi-cycle real core reload calculations.The verified calculations have been executed for Qin-ShanⅠ（NPP） 1～6 cycle in this method.Compared with the calculated results given by the three dimensioncore code RSIM,the maximum cycle burnup difference is 2.89% and the maximum discharge burnup difference is 1.30%.The maximum discharge burnup difference is approximately one third of that of the zero dimension point reactor model.
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Key words:
- Multi-cycle /
- Fuel management /
- Point reactor /
- One dimension calculation
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