晃荡条件下双列气泡运动特性的实验研究
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- 英文论文题名：Experimental study on double-row of bubbles movement characteristics in water in sloshing condition
- 论文作者：文静 ; 谭思超 ; 付学宽 ; 袁红胜
- 英文论文作者：WEN Jing ; TAN Si-chao ; FU Xue-kuan ; YUAN Hong-sheng ; Fundamental Science on Nuclear Safety and Simulation Technology Laboratory ; Harbin Engineering University
- 年：2015
- 作者机构：哈尔滨工程大学核安全与仿真技术国防重点学科实验室;
- 论文关键词：晃荡 ; 气泡行为 ; 附加惯性力 ; 横荡 ; 气泡运动
- 英文论文关键词：sloshing ; bubble behavior ; additional inertia force ; sway motion ; bubble movement
- 会议召开时间：2015-09-21
- 会议录名称：中国核科学技术进展报告（第四卷）——中国核学会2015年学术年会论文集第2册（核能动力分卷（上））
- 语种：中文
- 分类号：U664.15
- 学会代码：EGVD
- 会议名称：中国核学会2015年学术年会
- 会议地点：中国四川绵阳
- 主办单位：中国核学会
- 学会名称：中国核学会
- 页数：6
- 文件大小：879k
- 原文格式：O
- 会议级别：全国
摘要
本文对晃荡条件下双列气泡的运动特性进行了实验研究。通过设计并搭建晃荡实验台,使用高速摄影仪获取不同运动条件下气泡的运动状态图像,进而处理得到气泡的运动速度与运动轨迹等参数。对比分析静止及不同晃荡条件下双列气泡的运动参数,结果表明:静止条件下,两列气泡在上升过程中各自形成的涡流结构相互影响,导致双列气泡运动轨迹几乎呈轴对称状,并有聚拢-分离-聚拢的趋势;而由于晃荡运动引入的横向附加惯性力以及引起的流场变化削弱了两列气泡间的相互作用,使得两列气泡在晃荡条件下运动轨迹趋于一致;且两列气泡的水平速度主要受晃荡引起的自由液面波动的影响而产生大幅波动,波动趋势一致,最大峰值比静水中大。
Experimental research on double-row of bubbles movement characteristics in sloshing condition is carried out.An experimental system is designed and set up,bubble behavior in sloshing condition is recorded with high speed camera,bubbles velocity and trajectory are obtained from experimental images.Comparing bubbles parameters under different conditions,it is found that two rows of bubbles influence each other by vortex structures formed during their rising process,trajectories of double-row bubbles are axisymmetric shaped and have a tendency of becoming close-apart-close in stationary conditions.While trajectories have almost the same shape in sloshing condition since the additional inertia force and change of flow field induced by sloshing weaken the interaction between two rows of bubbles.Bubbles horizontal velocity in sloshing condition fluctuates wildly and the maximum peak velocity is greater than that in static water,which is mainly caused by free surface fluctuations in sloshing condition.
Experimental research on double-row of bubbles movement characteristics in sloshing condition is carried out.An experimental system is designed and set up,bubble behavior in sloshing condition is recorded with high speed camera,bubbles velocity and trajectory are obtained from experimental images.Comparing bubbles parameters under different conditions,it is found that two rows of bubbles influence each other by vortex structures formed during their rising process,trajectories of double-row bubbles are axisymmetric shaped and have a tendency of becoming close-apart-close in stationary conditions.While trajectories have almost the same shape in sloshing condition since the additional inertia force and change of flow field induced by sloshing weaken the interaction between two rows of bubbles.Bubbles horizontal velocity in sloshing condition fluctuates wildly and the maximum peak velocity is greater than that in static water,which is mainly caused by free surface fluctuations in sloshing condition.
引文
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[2]Liu Z,Zheng Y.PIV study of bubble rising behavior[J].Powder Technology,2006,168(1),10-20.
[3]L Liu et al.Experimental studies on the shape and motion of air bubbles in viscous liquids[J].Experimental Thermal and Fluid Science,2015,62:109-121.
[4]F.Raymond,J.-M.Rosant.A numerical and experimental study of the terminal velocity and shape of bubbles in viscous liquids[J].Chemical Engineering Science,2000,(5):943-955.
[5]黄莹,高璞珍.水平分布两气泡之间相互作用及摇摆对其影响的数值模拟[J].原子能科学技术,2014,48.
[6]宋禹林,谭思超,付学宽.晃荡对气泡上升运动影响的数值研究[J].核动力工程,2014.
[7]刘新立.船载液体晃荡载荷特性研究[D].武汉理工大学,2009.