用于六角形组件均匀化的不规则栅元等效方法及其数值验证

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Irregular Region Transformation Method for Hexagonal Assembly Homogenization and Its Numerical Validation

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 为了简化六角形组件的均匀化过程,提高均匀化方法对组件几何形状的适应性,提出一种简单、有效的六角形组件不规则栅元等效方法,即在保证各种成份质量不变的条件下,将元件盒及边界水隙等不规则栅元等效成均匀、规则的六角形栅元。数值计算结果表明,该方法能够准确预测组件反应性及功率分布随燃耗的变化。
- 六角形组件 /
- 均匀化 /
- 不规则栅元 /
- 等效方法
Abstract: In order to simplify the calculation process of hexagonal assembly homogenization,and enhance the adaptability of homogenization method for hexagonal geometry,a simple irregular region transformation method is proposed in this paper,by which these irregular regions such as assembly wrapper and water gap can be transformed into regular hexagon with the constraint condition that material mass remains constantly.The numerical results show that it is a very accurate and efficient method for the prediction of assembly reactivity and normalization power distribution versus burnup.
- Hexagonal assembly /
- Homogenization /
- Irregular region /
- Transformation method