摘要
为了验证矩形通道双群组界面浓度输运模型的准确性与适用性,采用四探头电导探针测量方法,对竖直条件下矩形通道内气液两相界面输运特性开展了试验研究,获得了大量时均空泡份额、界面浓度等试验数据。试验在常温常压条件下进行,工质为空气-水,本体采用透明亚克力材质,尺寸为10 mm×200 mm,气、液相折算速度范围分别为0.047~2.014 m/s和0.315~4.416 m/s,流型范围覆盖泡状流、帽状湍流和搅混流区域。在此基础上,选取了8种试验工况对矩形通道双群组界面浓度输运模型进行验证,对影响界面浓度输运模型的气泡相互作用机制进行了分析。结果表明,群组1和群组2气泡界面浓度和空泡份额相对误差均在±10%以内,验证了矩形通道双群组界面浓度输运模型的正确性。
In order to demonstrate the accuracy and applicability of the two-group interfacial area transport model for rectangular channel,the transport characteristics of gas-liquid two-phase interface in rectangular channel under vertical condition were experimentally studied by using fourprobe conductivity probe measurement method,and a large number of experimental data such as time-average void fraction and interfacial area concentration were obtained.The experiment was conducted in normal temperature and pressure with water and air as the working medium.The test sections of the channel were made of transparent acrylic material with a cross section of 10 mm×200 mm,and converted velocities of gas and liquid were 0.047-2.014 m/s and 0.315-4.416 m/s,respectively.Flow patterns involve bubbly flow,cap-turbulent flow and churn flow.On this basis,eight experimental conditions were selected to verify the two-group interfacial area transport model for rectangular channel,and the bubble interaction mechanism affecting the interfacial area transport model was analyzed.The results show that the relative errors of bubble interfacial area concentration and void fraction in group 1 and group 2 are within 10%,which verifies the correctness of the two-group interfacial area transport model for rectangular channel.
作者
于洋
芦韡
王文林
宋小明
曾辉
郭凤晨
李仲春
孙梓彬
Yu Yang;Lu Wei;Wang Wenlin;Song Xiaoming;Zeng Hui;Guo Fengchen;Li Zhongchun;Sun Zibin(Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China;Sino-German College of Intelligent Manufacturing,Shenzhen Technology University,Shenzhen,Guangdong,518118,China)
出处
《核动力工程》
EI
CSCD
北大核心
2023年第S02期74-79,共6页
Nuclear Power Engineering
关键词
矩形通道
界面浓度
空泡份额
双群组界面浓度输运模型
Rectangular channel
Interfacial area concentration
Void fraction
Two-group interfacial area transport model
