【作者】 鲍伟； 陈炳德； 徐建军； 谢添舟； 黄彦平； 幸奠川；

【Author】 BAO Wei;CHEN Bing-de;XU Jian-jun;XIE Tian-zhou;HUANG Yan-ping;XING Dian-chuan;CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulic Technology,Nuclear Power Institute of China;

【机构】 中国核动力研究设计院中核核反应堆热工水力技术重点试验室；

【摘要】 实验采用双探头光学探针对倾斜条件下圆管内过冷沸腾局部空泡分布进行测量,获得了倾斜圆管流道截面不同方向弦长上局部空泡份额,实验结果表明:在倾斜条件下,流道横截面β=90°和β=45°方向相分布发生明显偏移,局部空泡份额峰值出现在流道顶部。基于实验数据,对圆管内汽泡受力进行了分析,发现倾斜倾斜条件下,流道轴心区浮力径向分量较其余径向力大2～3个量级,浮力径向分量导致倾斜流道中局部空泡份额峰值出现在流道上壁面。更多还原

【Abstract】 The double-sensor optical probe was used to investigate the distribution of the local void fraction for subcooled boiling flow in an inclined circular tube.The experimental results showed that the phase distribution is not symmtrical under inclined condition,and the profiles skewed highly at β=90° and β=45°,the peak of local void fraction observed at r/R=-1 in β=90°.By analysis of experimental results,the radial force of bubble in the inclined tube have been calculated,and the radial part of buoyancy is 2 orders of magnitude larger than other radial forces,buoyancy leads to the largest void fraction at the top of the inclined tube.更多还原