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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 23 - 30 (8page)
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The inhibition effect of thioureido imidazoline inhibitor (TAI) for flow accelerated corrosion (FAC) at differentlocations for an X65 carbon steel elbow was studied by array electrode and computational fluid dynamics(CFD) simulations. The distribution of the inhibition efficiency measured by electrochemical impedancespectroscopy (EIS) is in good accordance with the distribution of the hydrodynamic parameters at the elbow.
The inhibition efficiencies at the outer wall are higher than those at the inner wall meaning that the lowerinhibition efficiency is associated with a higher flow velocity, shear stress, and turbulent kinetic energyat the inner wall of the elbow, as well as secondary flow at the elbow rather than the mass transport ofinhibitor molecules. Compared to the static condition, the inhibition efficiency of TAI for FAC was relativelylow. It is also due to a drastic turbulence flow and high wall shear stress during the FAC test, whichprevents the adsorption of inhibitor and/or damages the adsorbed inhibitor film.
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