哈尔滨工程大学学报2023，Vol.44Issue(12)：2224-2231,8.DOI:10.11990/jheu.202309008
铅铋回路自然循环瞬态特性与腐蚀沉积研究
Development of an analytical program for natural circulation and corrosion precipitation in a LBE flow loop
摘要
Abstract
To address the issue of the influence of corrosion precipitation on the structural materials of the reactor in the liquid lead-bismuth circuit under natural circulation,the transient thermohydraulic behavior of the lead-bismuth circuit was analyzed under natural circulation and dissolved corrosion precipitation conditions.Through mathemati-cal modeling of the universal lead(Pb)bismuth(Bi)eutectic advanced test loop,the thermohydraulic and corro-sion deposition programs applicable to transient natural circulation were developed.The transient thermohydraulic behavior under typical operating conditions,such as transient start-up and step power change,and the corrosion precipitation distribution of the loop under oxygen-free and oxygen-controlled conditions are discussed.The results show that the temperature of the lead-bismuth circuit considerably fluctuates during transient start-up,and the in-crease in step power change and inlet temperature increases the flow rate of natural circulation.The corrosion of the lead-bismuth circuit is severe under natural circulation conditions without oxygen control.After introducing oxygen control(c0 = 1×10-8),the maximum corrosion rate was only 1/1 000 that of the case without oxygen control,and the increase in heating power increased the corrosion precipitation rate of the circuit.The results were similar in the oxygen-free and oxygen-controlled states.关键词
铅铋合金/自然循环/隐式离散/瞬态启动/功率阶跃/溶解腐蚀模型/回路沉积/氧浓度Key words
lead-bismuth eutectic/natural circulation/implicit discrete/transient initiation/power step/dissolu-tion corrosion model/circuit deposition/oxygen concentration分类
能源科技引用本文复制引用
李辉,谢宛均,朱玉琦,吴浩,吕海财,刘芳,牛风雷..铅铋回路自然循环瞬态特性与腐蚀沉积研究[J].哈尔滨工程大学学报,2023,44(12):2224-2231,8.基金项目
国家重点研发计划(2022YFB1902503) （2022YFB1902503）
国家自然科学基金项目(12027813,12105101). （12027813,12105101）
