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| Simulation Analysis and Prediction of Erosion-corrosion of Seawater Pipelines in Ships |
| Received:May 22, 2021 Revised:June 30, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.09.010 |
| KeyWord:seawater pipeline erosion-corrosion simulation corrosion prediction |
| Author | Institution |
| PENG Wen-shan |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China |
| ZHAO Jian-cang |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China |
| SUN Jia-yu |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China;School of Materials Science and Engineering, China University of Petroleum East China, Qingdao , China |
| XING Shao-hua |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China |
| LIU Feng |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China |
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| Abstract: |
| This paper aims to obtain the erosion-corrosion law of the bend in the marine pipeline system under the influence of different factors and predict the erosion-corrosion rate. Based on the combination of test and numerical simulation, the scour corrosion regularity of bend in pipeline system under the influence of different seawater velocity, pipe diameter and ratio of bending radius to diameter is studied. Grey correlation analysis is used to analyze the influence of various factors on erosion-corrosion. Finally, the prediction equation of erosion-corrosion rate is established. With the increase of flow rate, the maximum erosion-corrosion rate first increases and then tends to be stable; with the increase of pipe diameter, the maximum erosion-corrosion rate of pipe wall gradually decreases; with the increase of ratio of bending radius to diameter, the maximum erosion-corrosion rate of pipe wall first decreases and then slightly increases. The sequence of the influence of different factors on the erosion-corrosion rate from high to low is the ratio of bending radius to diameter, velocity and pipe diameter. Numerical simulation method can quickly obtain the influence of pipeline parameters on erosion-corrosion rate. The prediction equation of erosion-corrosion rate based on the simulation results can predict the erosion-corrosion under the influence of different factors and has high prediction accuracy. |
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