摘要
通过实验研究不同上升段高度、上升段直径、初始过冷度、水装量和加热功率工况组合下的间歇泉流动现象,并对实验现象和实验数据进行分析。结果表明,在间歇泉流动中,加热系统内的液体会周期性地沸腾,并循环出现多种流动形态;液体的冷却回流过程中会产生较大的温度和压力变化;可以通过上升段相对压差和相对温差之比对间歇泉流动进行识别;5个工况参数中对间歇泉流动影响最大的是上升段几何结构和加热功率,增加上升段长径比和增大加热功率更有利于形成间歇泉流动。
The geysering phenomena is studied experimentally under several cases with different height of upper plenum, diameter of vertical column, initial subcooling, coolant inventory and heating power to investigate their influences on the geysering phenomenon. According to the analysis of experimental phenomenon and data, it is found that the liquid periodically boils and various flow patterns alternately occur in the heating system. The refilling of cooler liquid causes significant change of temperature and pressure in the system. The geysering phenomena can be identified by the ratio of pressure difference and temperature difference of vertical column and is more obvious under greater height of upper plenum, less diameter of vertical column and higher heating power.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2013年第2期9-15,共7页
Nuclear Power Engineering
基金
国家自然科学基金资助课题(11075104)
高等学校博士学科点专项科研基金资助课题(20090073110034)
关键词
间歇泉
周期性沸腾
自然循环
Geysering, Periodical boiling, Natural circulation
