Simulation of Abrasion Characteristics of Polar Ship Seawater Pipelines under the Coupling of Ice Particles and Vibration
| Autor: | Jie Li, Qiang Sun, Li Xu, Zong-Qiang Liu, Guan-Chen Liu, Hai-Wen Chen |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
ice packing factor 02 engineering and technology seawater pipeline Computational fluid dynamics Atomic packing factor lcsh:Technology Abrasion (geology) lcsh:Chemistry 0203 mechanical engineering General Materials Science seawater–ice two-phase flow lcsh:QH301-705.5 Instrumentation Fluid Flow and Transfer Processes lcsh:T business.industry Process Chemistry and Technology Multiphase flow General Engineering Mechanics erosion 021001 nanoscience & nanotechnology lcsh:QC1-999 Computer Science Applications Pipeline transport Vibration 020303 mechanical engineering & transports lcsh:Biology (General) lcsh:QD1-999 Flow velocity lcsh:TA1-2040 Seawater vibration lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology business lcsh:Physics |
| Zdroj: | Applied Sciences, Vol 10, Iss 4, p 1349 (2020) Applied Sciences Volume 10 Issue 4 |
| ISSN: | 2076-3417 |
| Popis: | Under the erosion of seawater&ndash ice two-phase flow, seawater in pipelines of polar ships can cause the pipeline failures that threaten the safety of navigations. The discrete phase model (DPM) and erosion wear model (EWM) were established by using the computational fluid dynamics (CFD) method for numerical analysis of the 90° elbow with relatively severe erosion. This paper explores the erosion effect of pipelines under different conditions and puts forward optimal measures for pipeline protection. Compared with the existing multiphase flow research, the novelty of this study is that vibration conditions are considered and parameters such as two-phase flow velocity, ice packing factor (IPF), ice particle diameter and ice particle rotation characteristics are combined with vibration conditions. Combined with the comprehensive analysis of erosion effects of static pipelines, a general law of seawater pipeline wear under vibration is obtained. The results show that pipeline wear under vibration is more serious than under static conditions. Under static conditions, the wear of the same section in the pipeline increases with the increases of two-phase flow velocity and IPF. However, under vibration conditions, when the velocity is less than 3 m/s, the wear of the pipeline has no significant change, while when the velocity is over 3 m/s, the wear rate increases significantly. The particle diameter has little effect on the wear of static pipes, but under the vibration condition, the pipe wear rate decreases with the increase of particle diameter, and it starts to stabilize when the diameter exceeds 0.3 mm. If the rotation characteristics of ice particles are taken into account, the wear rate along the pipeline is significantly higher than that without particle rotation. |
| Databáze: | OpenAIRE |
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