Abstract
ABSTRACT Numerical simulations were performed to investigate the wall water wetting process relating to the internal corrosion in an elbow system. In the simulations, the standard k-ε model and VOF method were used to reveal the water wetting mechanism. The water wetting time and frequency are proposed to characterize the internal corrosion. The results indicate that the wetting process is mainly controlled by the inner layer. For the case with a larger water fraction, the water tends to form a long-lasting low-frequency wetting process. However, for the case with a smaller water fraction, the water may be trapped into the oil phase and it appears as a discrete water wetting. At the elbow part, there is an increment of the wetting process when the angle is less than 30° and then it goes down. Combining the results of this study with the results of previous studies, the regions with a longer wetting time and a higher wetting frequency can be viewed as the high-risk corrosion zone.
Published Version
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