文章摘要
孙启国,汪雄师,周正辉,王 莹.康达效应对油气环状流分配特性的影响[J].润滑与密封,2014,39(11):19-25
康达效应对油气环状流分配特性的影响
  
DOI:10.3969/j.issn.0254-0150.2014.11.005
中文关键词: 康达效应  环状流  三通管  相分配
英文关键词: Coanda effect  annular flow  T-junction  phase distribution
基金项目:北京市属高等学校人才强教计划项目(PHR201107109).
作者单位E-mail
孙启国 北方工业大学 wxs4ever@126.com 
汪雄师 北方工业大学  
周正辉 北方工业大学  
王 莹 北方工业大学  
摘要点击次数: 896
全文下载次数: 0
中文摘要:
      基于Fluent流体力学软件对T型三通管道模型进行数值模拟,研究入口流型为环状流时,T型三通的气液相的质量流量、速度和压强的分布规律,特别是康达效应对以上分布规律的影响导致的油气分配的不均匀性。结果表明,连接处两支管曲率半径有差异时,康达效应导致油气环状流的分配出现不均性,曲率越小,支管内气相质量流量越大,液相质量流量越小;支管连接处曲率越小,曲率小的一侧支管出口的气相速度越大,反之,则越小;T型三通连接处入口的压强较高,压力梯度较小,水平支管中曲率小的一侧支管的压力梯度比曲率大的一侧大。
英文摘要:
      The model of T-junction was simulated based on Fluent hydrodynamics software.The mass flow of air and liquid phases,the distribution regularities of velocity and pressure in T-junction were studied when the inlet flow pattern was annular,especially the uneven distribution of oil and air caused by Coanda effect which had influence on the above regularities of distribution.The results show that when the curvature radiuses of the manifold at connection are different,Coanda effect leads to the uneven distribution of oil-air annular flow.The smaller the curvature is,the greater the air phase mass flow inside the manifold is,and liquid mass flow is smaller.The smaller the curvature of the branch pipe at connection is,on contrary,the smaller of it is.The pressure at the inlet of T-junction connection is high,but the pressure gradient is small.The pressure gradient in the small curvature side of horizontal pipe is larger than that of the large curvature side.
查看全文   查看/发表评论  下载PDF阅读器
关闭

分享按钮