Abstract
Experiments were conducted to investigate the basic mechanism of Flow Accelerated Corrosion (FAC), which is a main cause of pipe wall thinning phenomena in power plants. FAC was observed in a contracted rectangular duct where carbon steel test specimen was installed. FAC thinning rate was measured optically by laser displacement sensor and time variance data of thinning surface geometry were obtained. In parallel, numerical calculation was also conducted to clarify the local flow field affecting FAC in the experiment system. Maximum thinning rate showed a trend proportional to the square of mean velocity in terms of contraction flow in a pipe or a duct. Local thinning rate showed a proportional trend to both local velocity and fluctuation velocity on the surface, except few exceeded thinning data. For future prediction of quantitative thinning rate, effects of local average velocity and local turbulence must be evaluated separately in the FAC experiments.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
