输油管道弯管固液两相流流动特性数值模拟
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摘要
为了除去输油管道弯管低洼处的泥沙颗粒杂质,利用Fluent进行数值模拟,研究油流流速、弯管上倾角、颗粒粒径对泥沙颗粒运动规律的影响,利用Origin对模拟数据进行拟合处理,分别得到油流流速、颗粒粒径、弯管上倾角与压力梯度的函数关系式。结果表明:随着油流流速增快、弯管上倾角增大、颗粒粒径减小,管道压力梯度增大;油流流速与压力梯度的函数关系式斜率最大,说明油流流速对弯管压力梯度的影响最大。此外,对上倾角与压力梯度、颗粒层迁移速度之间的关系进行了分析,在所研究的模拟工况下,应选取小于30°的弯管上倾角。(图4,参25)
In order to eliminate sediment particles at the low point of the bend of oil pipeline, numerical simulation was conducted by Fluent to study the effects of oil flowing velocity, bend's updip angle and particle size on the movement laws of sediment particles. Then, the simulation data was fitted by Origin, and the function relations of oil flowing velocity, bend's updip angle and particle size to pressure gradient were established. It is shown that the pressure gradient of pipeline increases with the increase of oil flowing velocity and updip angle and the decrease of particle size. The slope of the function relation between oil flowing velocity and pressure gradient is the biggest, so the effect of oil flowing velocity on bend's pressure gradient is the greatest. Finally, the relationships of updip angle vs. pressure gradient and particle moving speed were analyzed. It is recommended to set the bend's updip angle less than 30° under the simulated conditions of this study.(4 Figures, 25 References)
In order to eliminate sediment particles at the low point of the bend of oil pipeline, numerical simulation was conducted by Fluent to study the effects of oil flowing velocity, bend's updip angle and particle size on the movement laws of sediment particles. Then, the simulation data was fitted by Origin, and the function relations of oil flowing velocity, bend's updip angle and particle size to pressure gradient were established. It is shown that the pressure gradient of pipeline increases with the increase of oil flowing velocity and updip angle and the decrease of particle size. The slope of the function relation between oil flowing velocity and pressure gradient is the biggest, so the effect of oil flowing velocity on bend's pressure gradient is the greatest. Finally, the relationships of updip angle vs. pressure gradient and particle moving speed were analyzed. It is recommended to set the bend's updip angle less than 30° under the simulated conditions of this study.(4 Figures, 25 References)
引文
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[14]周双,张根广,王新雷,等.均匀泥沙相对暴露度的试验研究[J].泥沙研究,2015(6):40-45.ZHOU S,ZHANG G G,WANG X L,et al.Study on relative exposure degree of uniform sediment[J].Journal of Sediment Research,2015(6):40-45.
[15]窦国仁.论泥沙启动流速[J].水利学报,1960(4):46-62.DOU G R.Incipient motion of coarse and fine sediment[J].Journal of Hydraulic Engineering,1960(4):46-62.
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[17]谢玉姝,范念念,刘兴年.非均匀推移质颗粒的扩散与分选试验研究[J].四川大学学报(工程科学版),2016,48(5):58-65.XIE Y S,FAN N N,LIU X N.Experimental study on diffusion and sorting characteristics of mixture bed-load particles[J].Journal of Sichuan University(Engineering Science Edition),2016,48(5):58-65.
[18]陈超,张庆河.基于能量原理的悬移质泥沙沿岸输沙率横向分布公式[J].泥沙研究,2015(4):66-73.CHEN C,ZHANG Q H.An energetics type formula for the cross-shore distribution of suspended-load longshore sediment transport rate[J].Journal of Sediment Research,2015(4):66-73.
[19]付刚才,马金宝,吴慧琴,等.悬移质含沙量垂线分布[J].水道港口,2014,35(1):38-42.FU G C,MA J B,WU H Q,et al.Vertical distribution of suspended sediment[J].Journal of Waterway and Harbor,2014,35(1):38-42.
[20]马晓阳,武传宇,陈洪立,等.水平90°弯管内固液两相流动的数值模拟[J].浙江理工大学学报,2014,31(3):228-234.MA X Y,WU C Y,CHEN H L,et al.Numerical simulation of solid-liquid two-phase flow in a horizontal 90°elbow pipe[J].Journal of Zhejiang Sci-Tech University,2014,31(3):228-234.
[21]隋冰,刘刚,李博,等.颗粒在起伏成品油管道中的沉积运移规律[J].石油学报,2016,37(4):523-530.SUI B,LIU G,LI B,et al.Deposition and movement laws of particles in fluctuating oil product pipelines[J].Acta Petrolei Sinica,2016,37(4):523-530.
[22]张钦礼,姜志良,王石,等.高浓度超细全尾砂充填料浆管道输送阻力模型[J].科技导报,2014,32(24):51-55.ZHANG Q L,JIANG Z L,WANG S,et al.Pipeline resistance model of the filling slurry transportation with high concentration and superfine total tailing[J].Science&Technology Review,2014,32(24):51-55.
[23]凌燕,张宏兵,潘益鑫,等.水平弯曲管道中固液多相流分相体积含率数值模拟[J].测井技术,2018(2):135-139.LING Y,ZHANG H B,PAN Y X,et al.Numerical simulation for phase volume fraction of solid-liquid multiphase flows in horizontal curved pipe[J].Well Logging Technology,2018(2):135-139.
[24]杜强,李洋,曾祥国.数值模拟油气管线弯管处固液两相流场特性及冲刷腐蚀预测[J].腐蚀与防护,2017,38(10):751-755.DU Q,LIN Y,ZENG X G.Prediction of flow field characteristics of solid-liquid phases and erosion corrosion in elbows of oil-gas pipelines using numerical simulation[J].Corrosion&Protection,2017,38(10):751-755.
[25]陈建宏,陈峤曦,张欣礼,等.基于Fluent的充填料浆管道输送阻力模拟[J].科技导报,2015,33(9):64-68.CHEN J H,CHEN Q X,ZHANG X L,et al.Computer simulation of filling slurry pipeline transportation using Fluent[J].Science&Technology Review,2015,33(9):64-68.
[2]赵胜超.浅析油田采出液中的泥沙除去方法[J].江汉石油职工大学学报,2011,24(4):34-36.ZHAO S C.On how to remove the sediment from oily produced fluid[J].Journal of Jianghan Petroleum University of Staff and Workers,2011,24(4):34-36.
[3]张文欣,周晓红,陈宏举,等.海底管道砂沉积模拟研究[J].石油化工高等学报,2016,29(1):86-92.ZHANG W X,ZHOU X H,CHEN H J,et al.Numerical simulation of sand depositional rule in subsea multiphase pipeline[J].Journal of Petrochemical Universities,2016,29(1):86-92.
[4]刘康,陈国明,魏超南.浮式生产系统泄漏天然气扩散规律与危险区域[J].石油学报,2015,36(8):1018-1028.LIU K,CHEN G M,WEI C N.Combustible gas diffusion law and hazardous area of FPSO[J].Acta Petrolei Sinica,2015,36(8):1018-1028.
[5]ENGELUND F,FREDSOE J.A sediment transport model for straight alluvial channel[J].Nordic Hydrology,1976,7(5):293-306.
[6]刘春嵘,邓丽颖,呼和敖德.复杂流动下泥沙起动概率的图像测量[J].湖南大学学报(自然科学版),2008,35(3):24-27.LIU C R,DENG L Y,HUHE A D.Image measurement of the probability of sediment incipience under complex flow[J].Journal of Hunan University(Natural Sciences),2008,35(3):24-27.
[7]孙志林,张超凡,杜利华,等.非均匀悬移质输沙率[J].水利学报,2016,47(4):501-508.SUN Z L,ZHANG C F,DU L H,et al.Transport rate of nonuniform suspended load[J].Journal of Hydraulic Engineering,2016,47(4):501-508.
[8]熊润东.不同粒径下悬移质含沙量垂线分布公式的验证与比较[J].水资源与水工程学报,2014,25(3):234-240.XIONG R D.Verification of vertical distribution formula of suspended sediment concentration under different sediment grain sizes[J].Journal of Water Resources and Water Engineering,2014,25(3):234-240.
[9]马菲,韩其为,李大鸣.非均匀沙分组起动流速[J].天津大学学报,2010,43(11):977-980.MA F,HAN Q W,LI D M.Incipient velocity of individual fractions of non-uniform sediment[J].Journal of Tianjin University,2010,43(11):977-980.
[10]孟震,杨文俊.基于三维泥沙颗粒的相对隐蔽度初步分析[J].泥沙研究,2011(3):17-22.MENG Z,YANG W J.Preliminary analysis of 3-D hidden degree of sediment particles[J].Journal of Sediment Research,2011(3):17-22.
[11]李昌华,孙梅秀.床面上泥沙绕流上举力系数的间接确定[J].泥沙研究,1984(4):60-63.LI C H,SUN M X.Indirect determination of the lift coefficient about flow around on the bed surface[J].Journal of Sediment Research,1984(4):60-63.
[12]李林林,张根广,吴彰松,等.正负坡上均匀散粒体泥沙起动流速的研究[J].泥沙研究,2016(5):54-59.LI L L,ZHANG G G,WU Z S,et al.Incipient motion velocity of non-cohesive uniform sediment particles on the positive and negative slopes[J].Journal of Sediment Research,2016(5):54-59.
[13]韦新东,纪宁,陆海.浆体管道运输阻力影响因素分析[J].中国资源综合利用,2015,33(6):54-57.WEI X D,JI N,LU H.The analysis of factors of slurry transport in pipeline by the resistance[J].China Resources Comprehensive Utilization,2015,33(6):54-57.
[14]周双,张根广,王新雷,等.均匀泥沙相对暴露度的试验研究[J].泥沙研究,2015(6):40-45.ZHOU S,ZHANG G G,WANG X L,et al.Study on relative exposure degree of uniform sediment[J].Journal of Sediment Research,2015(6):40-45.
[15]窦国仁.论泥沙启动流速[J].水利学报,1960(4):46-62.DOU G R.Incipient motion of coarse and fine sediment[J].Journal of Hydraulic Engineering,1960(4):46-62.
[16]韩其为.泥沙起动规律及起动流速[J].泥沙研究,1982(6):11-26.HAN Q W.Characteristics of incipient sediment motion and incipient velocity[J].Journal of Sediment Research,1982(6):11-26.
[17]谢玉姝,范念念,刘兴年.非均匀推移质颗粒的扩散与分选试验研究[J].四川大学学报(工程科学版),2016,48(5):58-65.XIE Y S,FAN N N,LIU X N.Experimental study on diffusion and sorting characteristics of mixture bed-load particles[J].Journal of Sichuan University(Engineering Science Edition),2016,48(5):58-65.
[18]陈超,张庆河.基于能量原理的悬移质泥沙沿岸输沙率横向分布公式[J].泥沙研究,2015(4):66-73.CHEN C,ZHANG Q H.An energetics type formula for the cross-shore distribution of suspended-load longshore sediment transport rate[J].Journal of Sediment Research,2015(4):66-73.
[19]付刚才,马金宝,吴慧琴,等.悬移质含沙量垂线分布[J].水道港口,2014,35(1):38-42.FU G C,MA J B,WU H Q,et al.Vertical distribution of suspended sediment[J].Journal of Waterway and Harbor,2014,35(1):38-42.
[20]马晓阳,武传宇,陈洪立,等.水平90°弯管内固液两相流动的数值模拟[J].浙江理工大学学报,2014,31(3):228-234.MA X Y,WU C Y,CHEN H L,et al.Numerical simulation of solid-liquid two-phase flow in a horizontal 90°elbow pipe[J].Journal of Zhejiang Sci-Tech University,2014,31(3):228-234.
[21]隋冰,刘刚,李博,等.颗粒在起伏成品油管道中的沉积运移规律[J].石油学报,2016,37(4):523-530.SUI B,LIU G,LI B,et al.Deposition and movement laws of particles in fluctuating oil product pipelines[J].Acta Petrolei Sinica,2016,37(4):523-530.
[22]张钦礼,姜志良,王石,等.高浓度超细全尾砂充填料浆管道输送阻力模型[J].科技导报,2014,32(24):51-55.ZHANG Q L,JIANG Z L,WANG S,et al.Pipeline resistance model of the filling slurry transportation with high concentration and superfine total tailing[J].Science&Technology Review,2014,32(24):51-55.
[23]凌燕,张宏兵,潘益鑫,等.水平弯曲管道中固液多相流分相体积含率数值模拟[J].测井技术,2018(2):135-139.LING Y,ZHANG H B,PAN Y X,et al.Numerical simulation for phase volume fraction of solid-liquid multiphase flows in horizontal curved pipe[J].Well Logging Technology,2018(2):135-139.
[24]杜强,李洋,曾祥国.数值模拟油气管线弯管处固液两相流场特性及冲刷腐蚀预测[J].腐蚀与防护,2017,38(10):751-755.DU Q,LIN Y,ZENG X G.Prediction of flow field characteristics of solid-liquid phases and erosion corrosion in elbows of oil-gas pipelines using numerical simulation[J].Corrosion&Protection,2017,38(10):751-755.
[25]陈建宏,陈峤曦,张欣礼,等.基于Fluent的充填料浆管道输送阻力模拟[J].科技导报,2015,33(9):64-68.CHEN J H,CHEN Q X,ZHANG X L,et al.Computer simulation of filling slurry pipeline transportation using Fluent[J].Science&Technology Review,2015,33(9):64-68.