Oil–water two-phase flow is common in the ocean engineering, petroleum, and chemical industries, among others. In the transportation process, the elbow system – as a paramount component – usually suffers from internal corrosion. In order to investigate the corrosion-prone characteristics of elbow systems, the volume of fluid (VOF) method and the renormalization group (RNG) k-ε model were used to study the oil–water flow in three different elbow configurations. The results indicate that the maximum wall shear stress and mass transfer coefficient are located at the intrados of the elbow for all flow configurations. Nevertheless, for horizontal-upward and horizontal-horizontal elbow flows, water does not come into direct contact with the intrados of the elbow, meaning it is much less susceptible to corrosion. Thus, a multiparameter model which also takes into account the water-volume fraction is necessary for characterizing the corrosion process. When this was combined with an analysis of the water wetting process, the horizontal-downward elbow flow was found to exhibit the largest corrosion risk among the three configurations examined, the horizontal-upward elbow flow was the least susceptible and the horizontal-horizontal elbow flow was in the middle.

油水两相流在海洋工程，石油和化学工业中很常见。在运输过程中，肘管系统（最重要的组成部分）通常会遭受内部腐蚀。为了研究弯头系统易腐蚀的特性，采用流体体积（VOF）方法和重归一化组（RNG）k - ε该模型用于研究三种不同弯头配置中的油水流动。结果表明，对于所有流动配置，最大的壁面剪应力和传质系数都位于弯头的内部。但是，对于水平向上和水平水平的弯头流，水不会直接与弯头的内腔接触，这意味着它不易受到腐蚀。因此，为表征腐蚀过程，还必须考虑水体积分数的多参数模型。将其与水润湿过程的分析相结合时，发现在所检查的三种配置中，水平向下的弯头流动表现出最大的腐蚀风险，