摘要
为计算含蜡原油管道再启动过程压力,根据流体连续性方程、运动方程及流变性方程,建立压力、流变性及剪切力相互耦合的再启动数学模型.该模型考虑含蜡原油的压缩性、屈服应力及沿管道位置和时间变化的流变性影响.停输后原油的流变性方程采用宾汉模型,并考虑屈服应力的逐时变化.管道内含蜡原油层流和紊流的压力和不可压缩CNR模型结果相比,此模型更接近于含蜡原油再启动的真实情况.
The pressure calculation of the restart of waxy crude oil pipeline makes for safety restart and restart design.The coupled model is studied with continuity equation,motion equation and theology equation.The restart model takes into account the compressibility and longitudinal variations.The theology of the gelled oil is modeled based on Bingham model,yield stress varies with time.Both laminar and turbulent flows are considered in the model.Pressure is calculated by numerical procedure.Compared to the previous model based on incompressible CNR,the present model gives a more realistic prediction.
出处
《大庆石油学院学报》
CAS
北大核心
2008年第5期45-47,54,共4页
Journal of Daqing Petroleum Institute
基金
黑龙江省教育厅基金资助项目(11513006)
关键词
再启动压力
含蜡原油
压缩性
流变性
管道
restart pressure
waxy crude oil
compressibility
theology
pipeline
