Application of BEM to cathodic protection of seawater pump
- Ebara Research Co., Ltd., Fujisawa, Kanagawa (Japan)
- Tokyo Inst. of Technology (Japan)
A three-dimensional boundary element method (3D-BEM) was developed to quantitatively estimate cathodic protection and macro-cell corrosion. To confirm the validity and usefulness of the BEM for analysis of fluid machines handling seawater with complex 3D fields, experiments and analyses were performed. A cast iron vertical pump with Zn anodes for cathodic protection, was submerged in seawater and operated. Potential distributions inside the pump and anodic currents on the Zn anodes were measured. Polarization characteristics of the pump material were also examined as functions of flow rate, time and temperature. Extremely accurate analyses on potential and current density distributions were performed by reflecting the polarization characteristics in the boundary conditions, and by means of appropriate modeling that takes account of the symmetry of the object being analyzed.
- OSTI ID:
- 113458
- Report Number(s):
- CONF-950304-; TRN: IM9544%%418
- Resource Relation:
- Conference: Corrosion `95: National Association of Corrosion Engineers (NACE) international annual conference and corrosion show, Orlando, FL (United States), 26-31 Mar 1995; Other Information: PBD: 1995; Related Information: Is Part Of Corrosion/95 conference papers; PB: 5788 p.
- Country of Publication:
- United States
- Language:
- English
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