Simulation study on thermal characteristics of primary coolant system of lead-bismuth cooled reactor

International Journal of Advanced Nuclear Reactor Design and Technology Pub Date : 2022-09-01 DOI:10.1016/j.jandt.2022.10.002

Shuaijie Lu, Minjun Peng, Genglei Xia, Qianping Zhang

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Abstract

According to the structural characteristics of the lead-bismuth (LBE) cooled reactor and the flow and heat transfer characteristics of the coolant, a real-time simulation model of the primary coolant system (PCS) is developed. The Reference Fluid Properties (REFPROP) is called to calculate the properties of supercritical carbon dioxide (S–CO₂), and the International Mathematics Statistics Library (IMSL) is used to call D_IVPAG function to solve the system of stiff differential equations in fully implicit scheme. Using the idea of matrix modularity, the transient code is developed in FORTRAN language. The transient characteristics of power step, primary and secondary flow rate and temperature step are studied respectively. The results show that the transient code can well reflect the dynamic characteristics of the LBE cooled reactor, and the code and algorithm meet the real-time requirements.

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铅铋冷却堆一次冷却剂系统热特性模拟研究

根据铅铋(LBE)冷却堆的结构特点和冷却剂的流动和传热特性，建立了一次冷却剂系统(PCS)的实时仿真模型。利用参考流体性质(REFPROP)计算超临界二氧化碳(S-CO2)的性质，利用国际数学统计库(IMSL)调用D_IVPAG函数求解全隐式刚性微分方程组。采用矩阵模块化思想，用FORTRAN语言编写暂态代码。分别研究了功率阶跃、一次、二次流量阶跃和温度阶跃的瞬态特性。结果表明，暂态代码能较好地反映LBE冷却堆的动态特性，代码和算法满足实时性要求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Advanced Nuclear Reactor Design and Technology

CiteScore

2.50

自引率

0.00%

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