【作者】 彦建宇； 车军； 曾实；

【Author】 YAN Jian-yu;CHE Jun;ZENG Shi;Department of Engineering Physics,Tsinghua University;CNNC Xinneng Nuclear Engineering Co.,Ltd.;

【机构】 清华大学工程物理系； 中核新能核工业工程有限责任公司；

【摘要】 考虑以矩形级联为基本模块构建阶梯级联,有两种构成方式:锥矩形级联和回流阶梯级联。研究锥矩形级联及回流阶梯级联的优化对级联的优化设计有一定的意义。这两种级联优化的难点在于优化变量的范围无法预先给出,级联流量分布会随过渡位置的改变而改变。利用优化软件,以级联总流量为目标函数,完成了锥矩形级联和回流阶梯级联的优化。从流量效率的角度比较二者优化结果,发现各种计算情况下锥矩形级联要优于回流阶梯级联。混合损失是影响流量效率的重要因素。更多还原

【Abstract】 In order to construct square-off cascades from square cascades,two types of construction can be considered:tapered square-off cascades and recirculating square-off cascades.Study of optimization of these cascades is of great significance for the optimal design of square-off cascades.The nobel problems in the optimization are that the flux distribution of cascades changes with the alteration of the locations of the transition stages.By employing an optimization software,the optimization of tapered square-off cascades and recirculating square-off cascades is accomplished.The results are compared in term of the flux efficiency,and it is observed that under different conditions tapered square-off cascades are more efficient than recirculating square-off cascades.The mixing lose is an important factor that affects the flux efficiency.更多还原