摘要
为研究石油开采、轴流泵等工程中环形断面管道液流的运动规律和现象,探讨目前鲜见研究的环形断面管道水击问题.文章针对环形断面管道的结构特点和流体运动特性,推导了环形断面管道水击波速的计算公式,讨论了公式中液流摩阻项的计算方法和对公式的影响.得出的环形断面管道水击波速公式,可为其液流流动规律和特性的进一步研究提供参考.
In order to study the phenomenon and regular movement pattern of liquid flow in an- nular space in projects such as oil extraction and drilling, the water hammer problem of liquid flow in annular space, which was rarely addressed at the moment, was discussed. According to the structure characteristics of annular space and the motion characteristics of fluid, the calcu- lating formula of water-hammer wave speed was deduced in annular space. The calculating method of friction drag and its effect on the wave speed equations were discussed. The ob- tained water-hammer wave speed equations could provide reference for the further research of mobility pattern and characteristics of liquid flow in annular space.
出处
《应用数学和力学》
CSCD
北大核心
2013年第9期908-916,共9页
Applied Mathematics and Mechanics
基金
国家自然科学基金资助项目(50706041)
"十二五"国家科技支撑计划项目(2102BAD08B03-2)~~
关键词
环形断面管道
水击
水击波速
摩擦切应力
摩阻
annular space
water hammer
water-hammer wave speed
friction shear stress
friction drag
