Finally, frictional pressure drop of annular flow in horizontal and vertical pipe was investigated under rolling condition.
最后,分析研究了摇摆状态下水平和竖直管内环状流的摩擦压降,结果表明Chisholm模型不适合直接用来预测摇摆状态环状流摩擦压降。
参考来源 - 摇摆状态下气水两相流流型及阻力特性研究On the aspect of coupling flow with reservoir, only frictional pressure drop in wellbore is considered just for convenience, acceleration pressure drop and inflow effects are ignored.
在和油藏渗流结合方面,为了处理方便,只是考虑井筒中的摩擦压降,没有考虑加速度压降和壁面流入产生的附加压降。
参考来源 - 水平井变质量流与油藏渗流耦合研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The additional frictional pressure drop for vertical tubes due to its connection with the bend was accounted into the frictional component due to return flow.
回弯压力降除考虑回弯头的局部阻力外，还包括相连直管段受回弯影响而增加的压力降。
Experiments on heat transfer and frictional pressure drop of kerosene of single phase flow in the internally ribbed tube were conducted and compared with those of smooth tube.
对煤油在内螺纹管中的单相紊流传热和摩擦阻力特性进行了实验研究，并将实验结果同煤油在光管中的实验结果作了比较。
To calculate discharge port pressure, this article considers the influence on frictional pressure drop in the gas and liquid two-phase flow between rod and tubing owing to rotation of rods.
在计算排出口压力计算过程中，考虑了由于抽油杆柱旋转引起杆管环空气液两相流摩阻的影响。
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