螺旋分离器单相流动的数值模拟与实验  

Numerical simulation and experimental research of flow field in spiral separator

作　　者：郑焕军[1] 孟玲莉[2] 韩洪升[3] 

机构地区：[1]大庆油田有限责任公司第六采油厂,黑龙江大庆163114 [2]大庆油田有限责任公司第一采油厂,黑龙江大庆163001 [3]东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318

出　　处：《大庆石油学院学报》2011年第2期68-72,119-120,共5页Journal of Daqing Petroleum Institute

摘　　要：利用PHOENICS数值模拟软件与PIV实验技术结合方法,分析不同质量浓度、流量、工作介质的螺旋分离器螺旋流流场分布、压力场分布和涡量分布.结果表明:在螺旋分离器螺旋流中,其切向速度远大于轴向速度、径向速度,但径向速度很小,一般可以忽略;随着流量、聚合物质量浓度的增加,压力下降速度也增大;在螺旋分离器内部压力呈阶梯状下降,且压力变化并不均匀,靠近螺旋入口端的压力变化小于靠近螺旋出口端的;涡旋并没有在整个螺旋叶片间的旋转流道内产生,只是产生在贴近叶片上壁和下壁处,即在近壁处更易产生涡旋.该结果可为螺旋分离器内部螺旋流流场的研究提供借鉴.Using the methods of numerical simulation for PHOENICS and PIV experiment,the paper gives a quantitative analysis of the distribution of flow field,distribution of pressure field and distribution of vortex for different viscosity and different flow rates.The results show that in the spiral flow,its tangential velocity is much larger than the axial velocity and radial velocity,while radial velocity is so small that its impact can generally be ignored.With the increasing of the flow rate and polymer concentration,the speed for pressure drop is increasing.Internal pressure within the separator is stepped down,and this change is not uniform,the change of pressure near the inlet of screw is less than near the outlet of screw.In the spiral flow,the vortex is not appeared in the whole spiral flow between the rotating field,but only appears on the wall of the spiral leaves and under the wall,that means it's more prone to appear vortex near the wall.The simulation results and experimental results could supply reference for future research about spiral flow field within the spiral separator.

关 键 词：螺旋分离器 螺旋流 PHOENICS PIV 幂律流体 

分 类 号：TE992[石油与天然气工程—石油机械设备]