湍流作用下颗粒旋转对海水管道的冲蚀磨损过程分析
|
摘要
为准确预测海水管道携沙受到的冲蚀磨损,对湍流作用下颗粒旋转对海水管道的冲蚀磨损过程进行分析。基于计算流体力学和冲蚀磨损理论,建立颗粒旋转的数学模型。验证双向耦合对流场的影响,计算不同冲蚀磨损模型在颗粒旋转条件下的磨损率,讨论斯托克斯数(St)对磨损位置的影响,分析颗粒旋转条件下不同流速对应的冲蚀磨损过程。结果表明:在颗粒旋转条件下,颗粒在弯头处的运动轨迹发生明显改变,一部分颗粒在惯性力的驱动下直接冲击弯头,另一部分颗粒与弯头碰撞之后在旋转升力的作用下环绕管壁运动,使得颗粒与壁面的碰撞次数增多,颗粒获得充分发展,管道最大磨损率上升。
In order to predict the erosion of sand carrying sea water pipe accurately, the erosion process caused by the rotation of particles in turbulent flow are analyzed. Based on computational fluid dynamics and erosion theory, a mathematical model of particle rotation is established. The influence of two-way coupling on the flow field is verified, the wear rates of different erosion models under particle rotation conditions are calculated, the influence of Stokes number on the wear position is discussed, and the erosion processes corresponding to different flow rates under particle rotation conditions are analyzed. The results show that the trajectory of the particles at the elbow changes significantly under particle rotation conditions. Some of the particles directly impact the elbow under the driving of inertia force. The others collide with the elbow and then moves around the pipe wall under the driving of rotating lift force. The number of collisions between the particles and the pipe wall is thus increased, the particles flow sufficiently, and the maximum erosion rate of pipes is increased.
In order to predict the erosion of sand carrying sea water pipe accurately, the erosion process caused by the rotation of particles in turbulent flow are analyzed. Based on computational fluid dynamics and erosion theory, a mathematical model of particle rotation is established. The influence of two-way coupling on the flow field is verified, the wear rates of different erosion models under particle rotation conditions are calculated, the influence of Stokes number on the wear position is discussed, and the erosion processes corresponding to different flow rates under particle rotation conditions are analyzed. The results show that the trajectory of the particles at the elbow changes significantly under particle rotation conditions. Some of the particles directly impact the elbow under the driving of inertia force. The others collide with the elbow and then moves around the pipe wall under the driving of rotating lift force. The number of collisions between the particles and the pipe wall is thus increased, the particles flow sufficiently, and the maximum erosion rate of pipes is increased.
引文
[1]ZAMANI M,SEDDIGHI S,NAZIF H R.Erosion of Natural Gas Elbows Due to Rotating Particles in Turbulent Gas-Solid Flow[J].Journal of Natural Gas Science&Engineering,2017,40:91-113.
[2]VIEIRA R E,MANSOURI A,MCLAURY B S,et al.Experimental And Computational Study of Erosion In Elbows Due To Sand Particles in Air Flow[J].Powder Technology,2016,288:339-353.
[3]PENG W S,CAO X W.Numerical Prediction of Erosion Distributions and Solid Particle Trajectories in Elbows for Gas-Solid Flow[J].Journal of Natural Gas Science and Engineering,2016,30:455-470.
[4]张俪安,钱付平,胡笳,等.通风管路90°弯管壁面颗粒磨损的数值模拟[J].过程工程学报,2016,16(3):394-401.
[5]彭文山,曹学文.固体颗粒对液/固两相流弯管冲蚀作用分析[J].中国腐蚀与防护学报,2015,35(6):556-562.
[6]WANG K,LI X F,WANG Y S,et al.Numerical Investigation of the Erosion Behavior in Elbows of Petroleum Pipelines[J].Powder Technology,2017,314:490-499.
[7]CHEN J K,WANG Y S,LI X F,et al.Erosion Prediction of Liquid-Particle Two-Phase Flow in Pipeline Elbows Via CFD-DEM Coupling Method[J].Powder Technology,2015,275:182-187.
[8]王凯,李秀峰,王跃社,等.液固两相流中固体颗粒对弯管冲蚀破坏的位置预测[J].工程热物理学报,2014,35(4):691-694.
[9]ZHU H J,LI S.Numerical Analysis of Mitigating Elbow Erosion with a Rib[J].Powder Technology,2018,330:445-460.
[10]OESTERLéB,BUI DINH T.Experiments on the Lift of a Spinning Sphere in a Range of Intermediate Reynolds Numbers[J].Experiments in Fluids,1998,25(1):16-22.
[11]DENNIS S C R,SINGH S N,INGHAM D B.The Steady Flow Due to a Rotating Sphere at Low and Moderate Reynolds Numbers[J].Journal of Fluid Mechanics,2006,101(2):257-279.
[12]FORDER A,THEW M,HARRISON D.A Numerical Investigation of Solid Particle Erosion Experienced Within Oilfield Control Valves[J].Wear,1998,216(2):184-193.
[13]FINNIE I.Erosion of Surfaces by Solid Particles[J].Wear,1960,3(2):87-103.
[14]MCLAURY B S,SHIRAZI S A,SHADLEY J R,et al.Modeling Erosion in Chokes[J].ASME Fluids Engineering Division,1996,236(1):773-781.
[15]OKA Y I,OKAMURA K,YOSHIDA.Practical Estimation of Erosion Damage Caused by Solid Particle Impact:Part 1:Effects of Impact Parameters on a Predictive Equation[J].Wear,2005,259(1):102-109.
[16]PARSI M,NAJMI K,NAJAFIFARD F,et al.AComprehensive Review of Solid Particle Erosion Modeling for Oil and Gas Wells and Pipelines Applications[J].Journal of Natural Gas Science&Engineering,2014,21:850-873.
[17]CHEN X G,MCLAURY B S,SHIRAZI S A.Application and Experimental Validation of a Computational Fluid Dynamics(CFD)-Based Erosion Prediction Model in Elbows and Plugged Tees[J].Computers&Fluids,2004,33(10):1251-1272.
[2]VIEIRA R E,MANSOURI A,MCLAURY B S,et al.Experimental And Computational Study of Erosion In Elbows Due To Sand Particles in Air Flow[J].Powder Technology,2016,288:339-353.
[3]PENG W S,CAO X W.Numerical Prediction of Erosion Distributions and Solid Particle Trajectories in Elbows for Gas-Solid Flow[J].Journal of Natural Gas Science and Engineering,2016,30:455-470.
[4]张俪安,钱付平,胡笳,等.通风管路90°弯管壁面颗粒磨损的数值模拟[J].过程工程学报,2016,16(3):394-401.
[5]彭文山,曹学文.固体颗粒对液/固两相流弯管冲蚀作用分析[J].中国腐蚀与防护学报,2015,35(6):556-562.
[6]WANG K,LI X F,WANG Y S,et al.Numerical Investigation of the Erosion Behavior in Elbows of Petroleum Pipelines[J].Powder Technology,2017,314:490-499.
[7]CHEN J K,WANG Y S,LI X F,et al.Erosion Prediction of Liquid-Particle Two-Phase Flow in Pipeline Elbows Via CFD-DEM Coupling Method[J].Powder Technology,2015,275:182-187.
[8]王凯,李秀峰,王跃社,等.液固两相流中固体颗粒对弯管冲蚀破坏的位置预测[J].工程热物理学报,2014,35(4):691-694.
[9]ZHU H J,LI S.Numerical Analysis of Mitigating Elbow Erosion with a Rib[J].Powder Technology,2018,330:445-460.
[10]OESTERLéB,BUI DINH T.Experiments on the Lift of a Spinning Sphere in a Range of Intermediate Reynolds Numbers[J].Experiments in Fluids,1998,25(1):16-22.
[11]DENNIS S C R,SINGH S N,INGHAM D B.The Steady Flow Due to a Rotating Sphere at Low and Moderate Reynolds Numbers[J].Journal of Fluid Mechanics,2006,101(2):257-279.
[12]FORDER A,THEW M,HARRISON D.A Numerical Investigation of Solid Particle Erosion Experienced Within Oilfield Control Valves[J].Wear,1998,216(2):184-193.
[13]FINNIE I.Erosion of Surfaces by Solid Particles[J].Wear,1960,3(2):87-103.
[14]MCLAURY B S,SHIRAZI S A,SHADLEY J R,et al.Modeling Erosion in Chokes[J].ASME Fluids Engineering Division,1996,236(1):773-781.
[15]OKA Y I,OKAMURA K,YOSHIDA.Practical Estimation of Erosion Damage Caused by Solid Particle Impact:Part 1:Effects of Impact Parameters on a Predictive Equation[J].Wear,2005,259(1):102-109.
[16]PARSI M,NAJMI K,NAJAFIFARD F,et al.AComprehensive Review of Solid Particle Erosion Modeling for Oil and Gas Wells and Pipelines Applications[J].Journal of Natural Gas Science&Engineering,2014,21:850-873.
[17]CHEN X G,MCLAURY B S,SHIRAZI S A.Application and Experimental Validation of a Computational Fluid Dynamics(CFD)-Based Erosion Prediction Model in Elbows and Plugged Tees[J].Computers&Fluids,2004,33(10):1251-1272.