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对垂直下降管内油包水型（Ｗ／Ｏ）和水包油型（Ｏ／Ｗ）油水乳状液的流动特性进行了深入的实验研究，根据实验结果分析得出了一个新的油水乳状液表观粘度的表达式；同时也得出了一个新的油水乳状液发生相转变的判别式，并提出了采用Ｒｅ和摩擦阻力系数的关联式计算摩擦阻力的方法，也得到了判别油水乳状液为牛顿流体和非牛顿流体的方法。
The flow characteristics of water-in-oil (W / O) and oil-in-water (O / W) oil-in-water emulsions in a vertical descending tube were investigated experimentally. Based on the experimental results, a new oil-water emulsion A new expression for the phase transition of oil-water emulsion was also obtained. A new method to calculate the frictional resistance by Re and the frictional resistance coefficient was also proposed. The results showed that the oil-water emulsion was Newtonian fluids and non-Newtonian fluids.