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随着粗网法和现代节块法的迅速发展,快速精确地确定燃料组件内中子通量分布以产生组件均匀化参数显得愈来愈为重要,这是因为粗网法和现代节块法是建立在假设堆芯粗网节块可以用等效均匀化参数描述的基础上的。对于全堆芯空间计算,由组件群常数的计算偏差引起的功率误差远远大于粗网、节块法方法本身所引起的误差。快速准确地确定组件群常数也是LWR物理设计及堆芯燃料管理的一个重要问题,本文介绍
With the rapid development of the coarse mesh method and the modern nodule method, it becomes more and more important to quickly and accurately determine neutron flux distribution in a fuel assembly to produce component homogenization parameters because of the coarse mesh method and the modern nodal method Is based on the assumption that the core coarse segment nodules can be described by equivalent homogenization parameters. For the whole core space calculation, the power error caused by the calculation deviation of the component group constants is far greater than the error caused by the coarse mesh and nodular method itself. Determining component group constants quickly and accurately is also an important issue in LWR physical design and core fuel management. This article describes