牛顿-幂律流体两相分层紊流的水力特性研究  

Study on Hydraulic Characters of Turbulent Stratified Flow in Pipe

作　　者：李洪波[1] 姚令侃[1] 伍超[2] 郑永刚[2] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031 [2]四川大学高速水力学国家重点实验室,四川成都610065

出　　处：《四川大学学报（工程科学版）》2005年第1期5-9,共5页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家自然科学基金资助项目(50478085;50278080)

摘　　要：针对圆管中两相分层紊流流动的水力特性,利用一种新的研究方法———旋转坐标轴法,将圆管流的研究转化为平板流,籍此建立了新的牛顿-幂律流体圆管分层紊流流动模型,得出流动的解析表达式,并通过实验对模型进行了验证。给出了两相分层流以及单相管流的流量积分式,用以验证油气两相分层流是否能相对于石油单相管流实现减阻,为油气混输技术提供理论依据。A new approach of the Rotatable Coordinate Axis is proposed. It is used to study the hydraulic characters of two-phase stratified flow in pipe. Based on it, a new model for stratified turbulent flow in pipe is built and the analytic formulas of velocity field are obtained. The model is validated by experiment. Furthermore, the discharges of two-phase stratified flow and single-phase flow are presented. Both of them can be used to prove that whether or not two-phase flow could achieve resistance reduction compared to single-phase flow. Thus, this conclusion will provide theories to promote the development of oil and natural gas mixed transportation technology.

关 键 词：圆管 紊流 旋转坐标轴 分层流 减阻 

分 类 号：O359[理学—流体力学]