摇摆条件下矩形窄缝通道内汽泡脱离直径模型构建及分析  

Model Development and Analysis on Bubble Departure Diameter in Narrow Rectangular Channel Under Rolling Motion

作　　者：谢添舟[1] 陈炳德[1] 闫晓[1] 徐建军[1] 黄彦平[1] 肖泽军[1] 

机构地区：[1]中国核动力研究设计院中核核反应堆热工水力技术重点实验室,四川成都610041

出　　处：《原子能科学技术》2014年第5期801-805,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(51106142)

摘　　要：在静止条件下汽泡脱离直径预测模型的基础上,引入摇摆条件引起的瞬变外力场,构建了摇摆条件下汽泡脱离直径预测模型,通过实验数据进行验证,结果符合较好。通过受力分析发现,摇摆运动引起的浮力波动必须予以考虑。模型计算发现:角位移θ=0°时,汽泡脱离直径最小;而质量流速越大,这种趋势越不明显。如果系统存在5%以上的流量波动,则其对汽泡脱离直径的影响必须加以考虑。Based on force balance analysis under static condition , a bubble departure model was established to predict the bubble departure size under rolling condition by considering the additional force .The proposed model agrees well with the experimental data .By force analysis it is indicated that the buoyancy fluctuation caused by rolling motion must be considered in the model .The calculation result shows that the bubble departure diameter is the minimum w hen the angular displacement is zero .T his tenden-cy is more unobvious with the increase of mass flow rate .Moreover ,if the experiment loop has more than 5% of the flow fluctuation , the influence of flow fluctuation on bubble departure diameter must be considered .

关 键 词：摇摆运动 受力分析 矩形窄缝通道 汽泡脱离直径 

分 类 号：TK124[动力工程及工程热物理—工程热物理]