Simulation of TOPAZ-Ⅱ Reactor System Based on RESYS Code

被引：0
|
作者：
Wu Z. [1 ]
Qi L. [1 ]
Wu M. [1 ]
Li Y. [1 ]
Yang H. [1 ]
Liu T. [1 ]
机构：
[1] Department of Nuclear Engineering Design, China Institute of Atomic Energy, Beijing
来源：
Yuanzineng Kexue Jishu/Atomic Energy Science and Technology | 2024年 / 58卷 / 01期
关键词：
reactor system analysis; RESYS code; thermionic convertor; TOPAZ-Ⅱ; reactor;
D O I：
10.7538/yzk.2023.youxian.0058
中图分类号：
学科分类号：
摘要：
基于RESYS A versatile 程序的reactor TOPAZ-Ⅱ system反应堆系统模拟 analysis code RESYS for advanced nuclear reactor was developed by using object- C++. 吴宗芸 Based , 祁琳 on RESYS , 吴明宇code, , 李杨柳 the model 杨宏伟of thermionic 刘天才 nuclear reactor TOPAZ-Ⅱ developed in the former Soviet Union w its start-up process was simulated. The established TOPAZ-Ⅱ reactor system model included reactor core thermal model, conversion system model and the radiator model. The current density model of cesium thermionic converter used model b groups of delayed neutron point reactor kinetic model was used to consider the influence of various structural component point reactor equation with strong rigidity was solved using the Gear algorithm in the RESYS code. The reactivity feedba TOPAZ-Ⅱ reactor took into account the Doppler reactivity feedback of the fuel, the reactivity feedback of the electrodes, feedback of the moderator and reflector, and the introduction of reactivity control drums. The steady state and start-up tra simulated based on established thermal-hydraulic model and RESYS code. At steady state, the maximum temperature on the central thermionic fuel element is 2 291 K, the maximum temperature on the outer surface is 2 066.55 K, the maximu 分享the 743 emitter K, and is the 1 temperature 961 K, the maximum at the core temperature outlet is 837 difference K. The comparison between the between electrodes the is steady-state close to 1 200 operating K, the conditions temperature cal a RESYS code and the TOPAZ-Ⅱ design values was carried out. The calculated steady-state electric power output is consis calculation system model. results During of TITAM the startup code. process, The calculation the reactivity results feedback verify the of the correctness moderator of and the developed reflection layer RESYS is positive code and feedba the e all feedback effects. The overall reactivity feedback of the TOPAZ-Ⅱ reactor core is positive and does not have a self-stab feedback effect, which increases the difficulty of reactor control. During the start-up process of TFE, due to changes in th conductivity of the electrode gap, the temperature of the fuel pellets and emitter rapidly increases. At this time, some of th generated by fission is stored in the fuel pellets, causing a decrease in coolant temperature and the power of the radiation © 2024 Atomic Energy Press. All rights reserved.
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页码：112 / 124
页数：12
相关论文
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