外部流体作用下管道输送流固耦合效应偏移分析

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (13) : 142-146.

论文

外部流体作用下管道输送流固耦合效应偏移分析

周知进1，阳宁3，王钊1，袁毅1 ，罗柏文2

作者信息 +

Analysis on pipe’s offset considering fluid-solid coupling effects for pipeline transporting under the action of external fluid

ZHOU Zhi-jin1,YNANG Ning3, WANG Zhao1, YUAN Yi1,LUO Bo-wen2

Author information +

文章历史 +

摘要

采用数值方法分析管道结构-外部流体相互耦合效应对管道输送过程中管道自由端偏移的影响。这次调查中管道结构-流体耦合效应被充分考虑，流体域与结构域通过拉格朗日-欧拉公式化来表述。以垂直悬臂提升管道为研究对象，应用有限元软件ADINA对其外部流体-管道结构进行流固耦合特性研究。研究结果表明：（1）管道上端不论是采取固接还是铰接支撑，外部流场以不同速度冲击管道时，整个管道偏移变化不明显，在同一流速下对管道偏移变化较为显著的地方集中在管道自由端，最大偏移则出现在自由端顶点处；（2）管道上端无论是固结还是铰接，随着管外流体速度增加，X方向最大偏移的增量总是小于Y方向最大偏移的增量；而X方向的最小偏移变化量则大于Y方向相应偏移；（3）同一流速冲击下，固结时Y方向的最小偏移略大于铰接时Y方向的最小偏移，且两者在外部流速为时出现极大值。

Abstract

Computational methods were used to analyse the fluid-structure interaction of the internal fluid and pipe and exterior fluid coupled system.In essence, a fully coupled fluid–structure interaction (FSI) analysis was utilized in this investigation. Moreover, the fluid domain is described by an Arbitrary-Lagrangian–Eulerian (ALE) formulation that is fully coupled to the structure domain. This study analyzes the effect of the flow conditions and the geometric variation of the vertical transporting pipelines on the pipe’s natural frequency changes due to internal or exterior fluid using a finite element fluid–structure interaction (FSI) model. Both coupling model analysis on fluid structure interaction of pipe—outer fluid in lifting pipeline was researched by finite element software ADINA. These results are shown：（1）whether fixed or hinged suppor, the impacts of the external flow at different speeds to pipe’s offset did not change significantly.The maxium offset located on free end.(2).the maxium offset of X-direction is always less than the growth of Y-direction offset;the minimum offset changed in the X-direction is bigger corresponding than that of Y-direction.(3) the minimum offst of Y-direction in the fixed conncention is slightly bigger that that of Y-direction in the articulated connection,because the degreeof freedom of Y-rotation would not be constrainted.

导出引用

周知进;阳宁;王钊;袁毅;罗柏文. 外部流体作用下管道输送流固耦合效应偏移分析[J]. 振动与冲击, 2013, 32(13): 142-146

ZHOU Zhi-jin;YNANG Ning;WANG Zhao;YUAN Yi;LUO Bo-wen. Analysis on pipe’s offset considering fluid-solid coupling effects for pipeline transporting under the action of external fluid [J]. Journal of Vibration and Shock, 2013, 32(13): 142-146