Computational fluid dynamics (CFD) modeling was developed for uniform carbon dioxide corrosion, especially for steam condenser application. The electrochemical reactions of hydrogen ion reduction, carbonic acid reduction, and anodic dissolution of iro...
Computational fluid dynamics (CFD) modeling was developed for uniform carbon dioxide corrosion, especially for steam condenser application. The electrochemical reactions of hydrogen ion reduction, carbonic acid reduction, and anodic dissolution of iron were taken into account. A single-phase model in aqueous carbon dioxide solutions was tuned with available experimental results and was expanded to homogeneous vapor-liquid mixture flow. The corrosion rate was analyzed while varying operating temperature, pH, fluid velocity, liquid volume fraction, and liquid droplet diameter. It was found that pH and temperature impact the corrosion rate significantly while the other variables showed relatively minor effects. The detailed electrochemical reaction modeling for computational fluid dynamics was described along with the limitations of two-phase flow application.