抄録
Flow accelerated corrosion (FAC) is one of the important topics of interest associated with wall thinning phenomena in an aged power plant. For the reliability and the safety of operating nuclear power plant, it is necessary to clarify the process of wall thinning due to FAC. From the previous study, it is expected that FAC can be predicted by measuring mass transfer coefficient, k. However, the distribution of k in the bend pipe has not been investigated experimentally. We measured mass transfer coefficient in the bend pipe under turbulent condition. We found that the position of maximum value of mass transfer coefficient is not changed by Re number. We also found that the fluctuational frequency of maximum value of k is higher than the fluctuational frequency of k at straight pipe condition.
