入流条件对球阀内油水环状流演变的影响规律研究  

Influence of different inflow conditions to oil-water core annular flow in ball valve

作　　者：江帆[1] 岳鹏飞[1] 黎斯杰 肖纳[1] JIANG Fan;YUE Peng-fei;LI Si-jie;XIAO Na(School of Mechanical and Electrical Engineering,Guangzhou University,Guangzhou 510006,China)

机构地区：[1]广州大学机械与电气工程学院,广东广州510006

出　　处：《广州大学学报（自然科学版）》2018年第3期55-61,共7页Journal of Guangzhou University:Natural Science Edition

基　　金：广东省自然科学基金资助项目(2016A030313653);广东省科技计划资助项目(2015A070710029;2015A030402009;2014A070711023);广州市科技计划资助项目(201504291436202)

摘　　要：为了分析入流条件对球阀内油水环状流动状态的影响,采用VOF模型追踪油水界面,并用标准k-ε湍流模型描述湍流,建立油水环状流控制方程.分析了不同入流条件(速度、油相性质)下的油水环状流的油相体积分数、阀两端压力差、油相粘壁距离的变化.结果表明,油相流速增加,油相体积分数先增加而后趋于一定值,阀两端压力差呈现上升趋势,油相粘壁距离先下降而后上升.随着油相粘度增加,油相体积分数增加、阀2端压力差增加、粘壁距离降低.In order to analyze the influence of oil inflow and property parameters on the flow state of oil-water core annular flow in ball valves, the VOF model was used to track the oil-water interface, and the turbulent flow was described by standard turbulence k-ε model. The oil phase volume fraction, the pressure difference at both ends, and distance of oil adhere to pipe-wall under different oil velocity and oil phase properties were analyzed. The results show that the oil phase flow velocity increases, the volume fraction of oil phase increases and then tends to a certain value, the pressure difference at both ends of the valve presents an upward trend. With the increase of oil phase viscosity, oil phase volume fraction increases, pressure difference at both ends of the valve massses, and the distance adhered to wall decreases.

关 键 词：油水环状流 入流条件 油相性质 球阀 演变规律 

分 类 号：TH134[机械工程—机械制造及自动化]