摇摆运动对过冷沸腾流体中汽泡受力的影响  

Effect of Rolling Motion on Forces Acting on Bubbles in Sub-Cooled Boiling Flow

作　　者：秦胜杰 高璞珍[1] 

机构地区：[1]哈尔滨工程大学核科学与技术学院,150001

出　　处：《核动力工程》2008年第2期20-23,共4页Nuclear Power Engineering

基　　金：空泡物理和自然循环重点实验室基金资助项目(51482010105CB0101)

摘　　要：摇摆运动引起的附加加速度会对过冷沸腾汽泡的受力产生影响。计算分析发现,附加加速度对汽泡本身的影响相对汽泡所受的其他力可以忽略不计;附加加速度会引起流量的波动,而汽泡受力大小和流量有密切的关系。本文计算了摇摆运动下的汽泡受力,并与不摇摆时的进行了比较,发现摇摆运动对汽泡受力的影响很大,这样会使汽泡脱离点位置发生明显的改变,进而影响沸腾换热。Additional accelerations caused by rolling motion impose the forces acting on bubbles in sub-cooled boiling flow. Comparing with other forces acting on bubbles, the effect of additional accelerations may be neglected. The fluctuations of flow rate caused by additional accelerations have a close relationship with the forces acting on bubbles. The forces acting on bubbles under rolling motion are computed, and compared with that under non-rolling. The results show that rolling motion has great influences on the forces acting on bubbles, which makes obvious changes on the position of vapor bubble departure, hence influences the heat transfer in boiling flow.

关 键 词：摇摆运动 过冷沸腾 汽泡受力 

分 类 号：TK124[动力工程及工程热物理—工程热物理]