Mitigating Corrosion Probability in Systems by Addressing Bubble Hydrodynamic Behavior During the Condensation Process

The effect of contact angle, phase change process, and channel’s inclination angle on hydrodynamic behavior of bubble were investigated. For this purpose, transient flow along with a two-dimensional channel, was used. Moreover, VOF approach was used to simulate multiphase flow in the channel. Besides that, Lee model is mass transfer model that is utilized in current research. Results showed that increasing inclination angle of the channel has negative effect on the time which bubble quits the fluid’s media. In other words, due to reducing the velocity of flow, the exit time increased, in spite of increasing pressure gradient force. Furthermore, results showed that the exit time of bubble in presence of condensation process is slightly lower than the condition without presence of condensation process. This is owing to the reduction of the bubble's mass caused by the phase change. Last but not least, using hydrophobic walls in channel is worse than using hydrophilic surfaces due to corrosion considerations.

Keywords:

Condensation , Hydrodynamic behavior of bubble , Corrosion , Exit time , Inclination angle