音速蒸汽射流凝结压力振荡强度的实验研究  

Experimental Investigation on Magnitude of Pressure Oscillation Due to the Sonic Steam Jet Condensation

作　　者：唐思[1] 邱斌斌[1] 种道彤[1] 刘继平[1] 武心壮[2] 严俊杰[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,陕西西安710049 [2]国家核电技术公司,上海核工程研究设计院,上海200233

出　　处：《工程热物理学报》2013年第8期1479-1482,共4页Journal of Engineering Thermophysics

基　　金：国家核电技术公司员工自主创新项目(No.SNP-KJ-CX-2011-0008);国家重点基础研究发展计划(973计划)资助项目(No.2009CB219803);国家自然科学基金资助项目(No.51125027)

摘　　要：本文对蒸汽射流中汽水直接接触凝结引起的压力振荡强度进行了实验研究。实验采用8 mm音速喷嘴,蒸汽质量流率512～865 kg/(m^2·s),冷却水温度20～55℃。实验观察到渐缩形、膨胀-收缩形、双膨胀-收缩形和双膨胀-发散形四种典型汽羽形状,给出了汽羽周围空间平均压力脉冲分布图以及平均压力脉冲随冷却水温度、蒸汽质量流率的变化规律。实验结果表明,随着冷却水温度升高,平均压力脉冲曲线呈上升趋势,随着蒸汽质量流率的增加,在喷嘴出口附近平均压力脉冲增大,在远离喷嘴出口处平均压力脉冲基本保持不变。The magnitude of pressure oscillation caused by direct contact condensation of sonic steam jet was investigated experimentally. The steam mass flux was in the range of 512～865 kg/（㎡.s） while the cooling water temperature 20～55℃. The nozzle diameter was 8 mm. Typical steam plume shapes as contraction shape, expansion-contraction shape, double expansion-contraction shape and double expansion-divergent shape were observed in the experiments. Meanwhile the average pressure pulse distribution maps, relationships between the average pressure pulse and the cooling water temperature, the average pressure pulse and the steam mass flux were given. The experimental results indicated that the average pressure pulse curve increased with the increasing temperature of cooling water. And the average pressure pulse increased significantly with the increasing steam mass flux near the nozzle exit, while keeping constant far away from the exit.

关 键 词：蒸汽射流 压力振荡 平均压力脉冲 无量纲距离 

分 类 号：TK12[动力工程及工程热物理—工程热物理]