爬坡管道顺序输送混油特性的数值模拟

我国长输管道所经地区地形比较复杂,部分管道不可避免地需要承担存在较大落差的爬坡输送任务,而爬坡管道的倾角和输送顺序对混油特性有很大影响.针对此现象,借助VOF多相流模型,以三维直管为研究对象,分别就不同倾角和输送顺序对混油特性的影响进行了数值模拟.研究结果表明:当轻油先行重油后行时,随着倾角的增大混油量逐渐减小;当重油...

Numerical Simulation of Mixed Oil Characteristics for Climbing Pipeline of Batch Transportation

Due to the complexity of China’s long-distance pipeline via regions,parts of the pipeline assume the big gap transportation inevitably.And dip angles and batch transportation both make great influence on mixed oil characteristics.Aiming at the issue,based on VOF multiphase flow model three-dimensional straight tube is the research subject to simulate numerically the dip angles and the batch transportation’s influence on mixed oil characteristics respectively.The results show that the mixed oil concentration decreases gradually with the increase of the dip angle under the conditions of light oil first and heavy one trailing,and when the heavy oil is first and the light one is trailing,the concentration of mixed oil increases gradually as the angles increased.And in the case of heavy oil first,the characteristics of mixed oil is impacted greater by the angle.