Analysis of Flow on Grooving Corrosion at the Weld of a Carbon Steel pipe made by Electrical Resistance Welding

전기저항 용접강관의 홈부식에 미치는 유동 해석

Lots of researches were gone already about grooving corrosion mechanism of ERW carbon steel pipe. But there is seldom study for water hammer happened by fluid and acceleration of corrosion rate by incresed flow velocity. Therefore, in this study carried out the analysis based on hydrodynamic and fracture mechanics. Analyzed stress that act on a pipe using ANSYS as a program, and also FLUENT and STAR-CD were used for flow phenomenon confirmation. As the result, fatigue failure is happened by water hammer and corrosion rate was increased because of turbulent flow.