期刊论文

The effects of the shape function and weighting function on the kinetics of the ADS sub-critical reactor

Yu, T.

中文

核技术

0253-3219

2018

41

9

73-82

10.11889/j.0253-3219.2018.hjs.41.090602

Supported by National Natural Science Foundation of China (No.11575079)

本校为第一且通讯机构

在准静态框架下,动态参数由权重函数、动力学量算符、形状函数的卷积得到。传统方法的形状函数和权重函数并不能满足外源驱动次临界系统的中子动力学分析。本文分别采用λ基波中子通量密度、α基波中子通量密度、加速器驱动次临界系统(Accelerator Driven Sub-critical System, ADS)反应堆稳态中子通量密度作为初始形状函数,采用共轭λ基波中子通量密度、共轭瞬发α基波中子通量密度、ADS反应堆稳态共轭中子通量密度作为权重函数,通过改进的准静态方法对外源驱动次临界系统的启堆过程和断束工况中子动力学进行模拟。通过与时空动力学方程直接求解结果对比发现:权重函数是影响中子动力学结果的主...

According to the quasi-static method, the kinetic parameters can be calculated by the convolution of the weighting function, kinetic operators and the shape function. The traditional shape function and weighting function are not suitable for kinetic analysis of source driven sub-critical system. [Purpose] In order to improve the calculation accuracy and understand physical characteristics of the source driven sub-critical system better, different shape functions and weighting functions were applied to improved quasi-static method, and they were...