|
| Simulation Study on Influence of Flow Velocity and Bending Angle on Corrosion Behavior of Elbow |
| Received:November 06, 2019 Revised:December 03, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.06.004 |
| KeyWord:elbow corrosion bending angle flow rate |
| Author | Institution |
| ZHENG Fei |
Ocean University of China, Qingdao , China;State Key Laboratory for Marine Corrosion and Protection, Luoyang ship Material Research Institute, Qingdao , China |
| XING Shao-hua |
State Key Laboratory for Marine Corrosion and Protection, Luoyang ship Material Research Institute, Qingdao , China |
| HE Hua |
Dalian Shipbuilding Industry Group Engineering and Research Institute Co., Ltd, Dalian , China |
| GAO Rong-jie |
Ocean University of China, Qingdao , China |
| XU Li-kun |
State Key Laboratory for Marine Corrosion and Protection, Luoyang ship Material Research Institute, Qingdao , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The paper aims to study the corrosion law of copper-nickel alloy pipes with different curvature under seawater scouring, to lay a foundation for elbow corrosion control. The corrosion behavior of three elbows of 30°, 45° and 90° at different flow rates was simulated by the k-ε turbulence model using polarization curves of copper-nickel alloy as boundary conditions. After the fluid entered the elbow, the flow velocity of inner side was obviously accelerated, and that of outer side was reduced, resulting in serious corrosion of the inner pipe wall. The corresponding corrosion rate increased with the increase of the bending angle; and at the same time, the serious corrosion zone moved backward. Meanwhile, as the inlet flow rate increased, the corrosion rate of the elbow wall was increased, but the maximum corrosion location within the elbow was not changed. The elbow corrosion rate is closely related to the flow rate and bending angle. The higher the flow rate and the greater the bending angle, the greater the corrosion rate of the tube wall. |
| Close |
|
|
|