摘要
为了得到蒸汽在过冷水中浸没射流凝结引起的压力振荡特性,针对不同的蒸汽质量流率和过冷水温度对压力振荡的影响进行实验研究。通过高频压力传感器测量得到了不同测点位置的压力振荡幅值,并结合蒸汽射流凝结形态分析蒸汽质量流率和过冷水温度对压力振荡幅值的影响规律。结果表明,蒸汽射流凝结在凝结振荡区比较剧烈,在稳定射流区相对缓和,从凝结振荡向稳定射流的形态转变导致了压力振荡幅值随蒸汽质量流率出现先减小后增大的趋势;振荡幅值随水温的升高不断增大,特别是当水温大于40℃时,由于过冷度减小,射流凝结形态变得发散,导致凝结振荡幅值大幅增加。
In order to obtain the pressure oscillation characteristics induced by steam jet in water, the experimental method was used to investigate the pressure oscillation in a wide range of steam mass fluxes and water temperatures. The pressure oscillation amplitudes at various positions were measured using high frequency pressure sensor, and the effects of steam mass flux and water temperature on the amplitude were analyzed combined with the flow patterns. The results indicated that the pressure oscillation was intense at condensation oscillation region, and was relaxative at stable steam jet region. The amplitudes decreased firstly then increased with the steam mass flux due to the transition of flow patterns. Moreover, the amplitudes increased with water temperature, and especially as the water temperature was higher than 40℃, the flow pattern became divergent which leaded to a significant increase in amplitude.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2014年第3期37-41,共5页
Nuclear Power Engineering
基金
国家核电技术公司员工自主创新项目专项资金(SNP-KJ-CX-2011-0008)
国家自然科学基金(51125027)
关键词
蒸汽射流
压力振荡
幅值
Steam jet, Pressure oscillation, Amplitude
