Study on the Critical Heat Flux Mechanism Model under the Condition of Low Velocity and Subcooled Boiling in the Narrow Channel

摘要：

Based on the bubble dynamics, the generation and separation of bubble plays a leading role in the heat transfer of boiling condition. Before the bubble separation, micro liquid layer below bubbles is evaporated to dryness and heat transfer deterioration is the ultimate cause of boiling crisis, proposed a critical heat flux mechanism in the conditions of low velocity and narrow channel. A critical heat flux mechanism model is established. By calculation, in the low mass flow range the mechanism model has a high precision to predict CHF in a larger pressure and export dry degree ranges. Using the model the relationship of parameters is studied.

关键词： low velocity narrow channels bubble dynamics CHF occurrence mechanism

作者: Ming Zhang Tao Zhou Ping Liu Ke Ran Cheng Sheng Yanping Huang

作者单位: Institute of nuclear thermal-hydraulic safety and standardization North China Electric Power Univers National key laboratory of bubble physics and natural circulation Nuclear Power Institute of China,

会议类型: 国际会议

会议名称: 2011 3nd International Conference on Mechanical and Electronics Engineering(2011年第三届机械与电子工程国际会议 ICMEE2011)

会议地点: 合肥

会议语种:英文

页码: 3962-3966

在线出版日期: 2011-09-23（万方平台首次上网日期，不代表论文的发表时间）