Effects of superficial gas/liquid velocities and water volume fraction on the frictional pressure drop of three-phase flow in vertical downward pipe (40 mm i. d. ) are experimentally investigated.

• 对垂直下降钢管内油气水三相流动的摩擦压降受折算液速、折算气速和油水混合物中含水率的影响进行了试验研究。