Numerical simulation for effects of pipeline internal flow on vibration of flexible marine pipe

被引：0
|
作者：
Liu B. [1 ]
Chen Z. [1 ,2 ]
Bao J. [1 ]
Cui Z. [3 ]
机构：
[1] College of Naval Architecture and Mechanical-Electrical Engineering, Zhejiang Ocean University, Zhoushan
[2] State Key Lab of Coastal and Offshore Engineering, Dalian University of Technology, Dalian
[3] College of Mathematics, Physics & Information Science, Zhejiang Ocean University, Zhoushan
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 17期
关键词：
Fatigue damage; Flexible pipe; Internal flow; Numerical simulation;
D O I：
10.13465/j.cnki.jvs.2020.17.024
中图分类号：
学科分类号：
摘要：
Pipeline internal flow is an important vibration-inducing factor for marine elastic pipelines, but at present, there are few related theories. Here, based on the CFD single and double directional fluid-structure interaction analysis method, effects of internal flow propagating along pipe-span on vibration responses of flexible marine pipe/riser were investigated. Contrastive analysis between results of model tests and numerical simulation ones only considering external flow showed that the simulated results using the proposed analysis method and test ones agree better when external flow velocity is low. Under the working condition simultaneously considering internal and external flows, it was shown that different internal flow velocities can have different degrees of influence on vibration frequency and amplitude of flexible marine pipe/riser; when internal flow velocity is relatively small, internal flow has little influence on vibration frequency and amplitude of flexible pipe; when internal flow velocity is relatively large, internal flow has more obvious influence on flexible pipe's transverse flow vibration amplitude and forward flow vibration mode to make flexible pipe easily have resonance within a low frequency range and increase the possibility of its fatigue damage; the study results can provide a reference for structural strength design and fatigue analysis of elastic/flexible pipelines. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：177 / 185and202
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