【摘要】 对矩形窄缝通道(1×20mm,2×20mm)中水沸腾的汽液两相流动流型转化准则进行了研究。根据实验结果,水平矩形窄缝加热通道中流型可以分为泡状流、间歇弹状流、搅拌流、环状流和汽液分离流。运用分相流模型对矩形窄缝通道中水沸腾的汽液两相流动流型进行了理论分析,得出了相应的流型转换准则,并与实验数据进行了初步比较,符合较好。更多还原

【Abstract】 The flow regime transition criteria for the boiling water two-phase flow in horizontal rectan- gular narrow channels(1×20mm,2×20mm) were theoretically explored. The discernible flow patterns were bubbly, intermittent slug, churn, annular and steam-water separation flow. By using two-fluid model, equa- tions of conservation of momentum were established for the two-phase flow.New flow-regime criteria were obtained and agreed well with the experiment data.更多还原