基于Modelica的铅铋合金自然循环回路特性仿真分析  

Simulation of Natural Cycle Loop of Lead Bismuth Eutectic Based on Modelica Modeling Language

作　　者：李建雄 李华琪 石磊太 田晓艳[2] 李达[2] 陈立新[2] 马宇 LI Jianxiong;LI Huaqi;SHI Leitai;TIAN Xiaoyan;LI Da;CHEN Lixin;MA Yu(Sino-French Institute of Nuclear Engineer&Technology,Sun Yat-sen University,Zhuhai,Guangdong Province 519082,China;Northwest Institute of Nuclear Technology,Xi’an 710024,China)

机构地区：[1]中山大学中法核工程与技术学院,广东珠海519082 [2]西北核技术研究所,西安710024

出　　处：《现代应用物理》2024年第3期75-82,共8页Modern Applied Physics

基　　金：国家自然科学基金资助项目(12275219);陕西省自然科学基金资助项目(2021JQ-578)。

摘　　要：为更好地研究铅铋反应堆自然循环特性,采用Modelica语言建立了铅铋合金(lead-bismuth eutectic,LBE)自然循环回路实验装置的热工水力仿真模型。模拟了铅铋合金自然循环回路的稳态工况、变功率工况以及失流工况,将加热段出入口LBE的温度及入口处LBE的质量流量与3种工况下的实验结果进行对比。结果表明,仿真结果与实验结果的温度最大相对偏差为9.96%,质量流量最大相对偏差为10.4%,程序计算的结果与实验较吻合。该模型可为铅铋反应堆设计开发过程中,铅铋合金的热工水力分析提供支持。To better study the natural circulation characteristics of lead bismuth reactor,a thermohydraulic simulation model of lead bismuth eutectic(LBE) natural cycle loop experimental device is established based on Modelica.The steady state condition,variable power condition and loss of flow condition of the LBE natural cycle loop are simulated.The inlet and outlet temperatures of the heating section and the inlet mass flow rate are compared with the experimental results under three conditions.The results show that the maximum deviation between the simulation results and experimental results is 9.96%,and the maximum deviation of mass flow rate is 10.4%.The calculated results are in good agreement with the experimental results.This model can provide support for the thermohydraulic analysis of LBE during the design and development of lead bismuth reactors.

关 键 词：铅铋合金 自然循环回路 仿真 MODELICA 

分 类 号：TL353[核科学技术—核技术及应用] O571[理学—粒子物理与原子核物理]