Abstract A novel eccentric annular T-junction tube was designed for oil–water separation. The separation characteristics of the eccentric annular T-junction tube were investigated by performing experiments and numerical analyses. The Eulerian model combined with the standard k-e turbulence model was used to numerically analyze the flow characteristics. Combining the dynamic separation principle of the T-junction tubes with the shallow pond theory, the eccentric annular T-junctions can achieve better overall separation performance than the regular T-junctions. The experimental results indicated that reducing the degree of mixing of the two-phases at the inlet improved the phase separation in the eccentric annular T-junction tubes. The flow pattern had a larger effect on the separation performance than the mixture velocity. The floating oil tube was beneficial to the oil–water separation, particularly at a low mixture velocity and high oil content. The results can be used for the design and operation of tube separators.

中文翻译：

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偏心环形 T 型接头管中的油水分流—实验和 CFD 分析

摘要 设计了一种用于油水分离的新型偏心环形T型接头管。通过实验和数值分析研究了偏心环形T型接头管的分离特性。采用欧拉模型结合标准ke湍流模型对流动特性进行数值分析。将T形接头管的动态分离原理与浅池理论相结合，偏心环形T形接头可以实现比常规T形接头更好的整体分离性能。实验结果表明，降低入口处两相的混合程度可以改善偏心环形T型管中的相分离。流型对分离性能的影响大于混合速度。浮动油管有利于油水分离，特别是在低混合速度和高含油量的情况下。结果可用于管式分离器的设计和操作。