处理板状双重非均匀性系统的方法研究  

Research on the method for dealing with plate fuel systems with double heterogeneity

作　　者：李佩军 郝琛 周晓宇 张智刚 LI Peijun;HAO Chen;ZHOU Xiaoyu;ZHANG Zhigang(Fundamental Science on Nuclear Safety and Simulation Technology Laboratory,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学核安全与仿真技术国防重点学科实验室,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2023年第9期1597-1604,共8页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(12075067).

摘　　要：针对弥散颗粒空间自屏效应产生的双重非均匀性,需对处理板状双重非均匀性系统的方法进行研究。本文通过对给定算例的计算,研究了DRAGON程序的Hebert和Sanchez-Pomraning双重非均匀性模型、环形RPT方法、IRPT方法和杂交RPT方法、基于颗粒直径的反应性等效物理转换(DRPT)方法处理板状双重非均匀性系统的能力,并与弥散模型参考值进行对比,结果表明:使用DRAGON程序的Hebert和Sanchez-Pomraning双重非均匀性模型可能会带来较大的计算误差,具有一定的局限性;IRPT方法和杂交RPT方法在燃耗计算过程中也存在一定的计算偏差;但是,本文提出的基于颗粒直径的反应性物理等效转换方法对于板状非均匀性系统的处理具有良好的计算精度,其操作简单、效果更好且适用范围广。For the double heterogeneity(DH)caused by the spatial self-shielding effect of dispersive particles,methods for addressing the plate fuel systems with DH warrant an investigation.In this work,through calculations for a given instance,the DRAGON code was studied for handling a plate fuel system with DH.The code was introduced into the Hebert and Sanchez-Pomraning DH model,circular RPT method,IRPT method,and HRPT method,as well as the reactive equivalent physical transformation method based on particle diameter(DRPT).Additionally,comparison of these methods with the reference dispersion model was performed.It was revealed that the DRAGON-based Hebert and Sanchez-Pomraning DH model may bring a large calculation error,having certain limitations;moreover,the IRPT and HRPT methods have certain errors in calculating the burnup process,but the DRPT method has good accuracy in treatment of plate heterogeneous systems,with simple operation,better effect,and wide application range.

关 键 词：弥散颗粒 空间自屏 双重非均匀性 板状系统 DRAGON IRPT方法 杂交RPT方法 DRPT方法 

分 类 号：TL329[核科学技术—核技术及应用]