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。
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。
With oil, gas, water as working fluids, the experiment studies of frictional pressure drop characteristics of oil gas, gas water two phase flow in vertical helically coiled tubes were carried out.
分别以油气、气水为工质，对立式螺旋管内气液两相流的摩擦阻力特性进行实验研究。
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。
According to the flowing conditions of the fluid in rotator, the factors causing the pressure drop due to the frictional and centrifugal forces are analyzed.
根据流体在管道中的流动状况，分析了阻力压降损失和离心压降损失。
According to the flowing conditions of the fluid in rotator, the factors causing the pressure drop due to the frictional and centrifugal forces are analyzed.
根据流体在管道中的流动状况，分析了阻力压降损失和离心压降损失。
应用推荐