Prediction Method of Flow Patterns in Subcooled and Low Quality Boiling Regions
Prediction Method of Flow Patterns in Subcooled and Low Quality Boiling Regions
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过冷低质量沸腾区流型预测方法
DOI：
10.1299/jsme1958.24.834
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发表时间：
1981
期刊：
影响因子：
--
通讯作者：
M. Nakasatomi
中科院分区：
文献类型：
--
作者：
K. Sekoguchi;O. Tanaka;S. Esaki;Noriaki Katsuki;M. Nakasatomi
提出了一个新的参数来预测沸腾过冷区和低质量区的泡状流、泡状流和环状流等流型之间的转变。该参数是根据已报道的含气率理论计算方法推导出来的，该方法假定流型转变发生在横截面上的平均含气率。给出了流程图，合理地关联了以下条件下的实验结果：压力：1∼98ata，热流密度：2×10~4∼5×10~6kcal/m~2，质量速度：40∼，5400 kg/m~2s。
A new parameter is proposed for prediction of the transition between flow patterns such as bubble, froth and annular flow, in both the subcooled and low quality regions of boiling flow. This parameter is derived from the theoretical calculation method of void fraction, which has been reported, on the assumption that the flow pattern transition occurs at a value of average void fraction over the cross section of the flow. A flow map is also presented which reasonably correlates the experimental results covering the following conditions ; pressure : 1∼98 ata, heat flux : 2×104∼5×106kcal/m2h, and mass velocity : 40∼5400kg/m2s.