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  • 中国标准连:ISSN1005-2895
  • 续出版物号: CN 33-1180/TH
  • 主管单位:轻工业杭州机电设计研究院
  • 主办单位:轻工业杭州机电设计研究院、中国轻工机械协会、中国轻工业机械总公司
  • 社  长:刘安江
  • 主  编:黄丽珍
  • 地  址:杭州市余杭区高教路970号西溪联合科技广场4-711
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李永胜, 王治云, 杨茉.横向水流作用下气泡运动数值模拟[J].轻工机械,2018,36(5):29-33
横向水流作用下气泡运动数值模拟
Numerical Simulation of Bubble Movement under Action of Transverse Flow
  
DOI:10.3969/j.issn.1005 2895.2018.05.006
中文关键词:  管道  VOF模型  气液两相流  气泡粒径  PISO算法
英文关键词:pipeline  VOF(volume of fluid) model  gas liquid two phase flow  bubble particle size  PISO(pressure implicit split operator) algorithm
基金项目:国家自然科学基金(51306121)
作者单位
李永胜, 王治云, 杨茉 上海理工大学 能源与动力工程学院 上海200093 
摘要点击次数: 180
全文下载次数: 143
中文摘要:
      由于气液两相体系中气泡的诸多流体力学行为不仅影响两相流的速度分布,还可通过改变气液相界面等途径改变整个体系的传热传质 效果,对气液接触设备性能具有重要影响。课题组利用数值模拟对恒定水速下管道中喷射的气体进行分析,追踪管道中气泡流的变化情况。气液两相流采用层流 模型,并运用VOF对气液两相界面进行追踪,速度与压力的耦合求解采用PISO算法。计算结果表明:气体在管道中成类似泡状流,并受浮力作用逐步靠近上壁面 形成连续的长气泡;水流速度和气泡到达上壁面距离进口处的距离近似呈线性关系;最大气泡粒径与进口水速负相关,与进口气速正相关。研究结果可为相关气 泡运动特性的进一步研究提供参考。
英文摘要:
      Many hydrodynamic behaviors of bubbles in gas liquid two phase system not only affect the velocity distribution of two phase flow, but also change the heat and mass transfer effects of the whole system by changing the gas liquid interface, which has an important influence on the performance of gas liquid contact equipment. Therefore, numerical simulation was used to analyze the injected gas in a pipe at constant water velocity, and the change of the bubble flow in the pipe after gas injection was tracked. The laminar flow model was adopted for the gas liquid two phase flow, VOF model was used to track the gas liquid two phase interface, and the PISO algorithm was used for the coupled solution of velocity and pressure. The calculation results show that the gas forms a bubble like flow in the pipe and is gradually close to the upper wall due to the buoyancy to form continuous long bubbles. There is a linear relationship between the velocity of the water flow and the distance from the air bubble to the upper wall surface at the entrance.The maximum bubble size is negatively related to the inlet water speed and positively related to the inlet gas velocity. This study can provide reference for the further research on the relevant bubble motion characteristics.
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