串列圆柱体尾流和尾涡耦合振动试验研究

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (22) : 26-29.

论文

串列圆柱体尾流和尾涡耦合振动试验研究

关德宝;黄维平;宋虹;田会元;耿翱翔;魏立波

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Experimental investigation of wake flow and wave-vortex coupling induced vibration of two tandem and cylinders

GUAN De-bao, HUANG Wei-ping, SONG Hong, TIAN Hui-yuan, GENG Ao-xiang, WEI li-bo

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摘要

基于模型试验的方法，设计一套试验装置，能够抑制上游立管涡旋的产生，研究不同工况下上游立管对下游立管的影响。分别对上游立管部产生涡激振动和产生涡激振动两种试验模型进行不同流速、不同间距条件下的流致振动试验，通过观察涡旋脱落和测量模型的振动分析上游立管有无抑涡设备，上游立管对下游立管横向振动的影响。研究表明，由于上游立管的存在对下游立管的振动产生影响，不再与孤立单管相同。上游无抑涡设备时，下游游立管的横向振动随立管间距的先增大后减小。有抑涡设备时，上游立管的横向振动在某倍管径后稳定在某个定值基本不变。

Abstract

In order to research upstream riser’s effect on downstream riser different conditions, we design a device which can inhibit the upstream vortex by model test method. The experiments concentrate on the vortex-induced vibration of isolated upstream riser and it with improved variety equipment under different flow rate, different spacing conditions. Analysis the impact on downstream riser result from upstream riser through researching vortex shedding and measuring model vibration with inhibit vortex device or not. After that, we conclude that downstream riser is different to isolated standpipe under the influence of upstream standpipe. The lateral vibration of the downstream riser have minimum like arch with tube spacing increases without any inhibit device, while it become stable after some tube diameter with the improved variety equipment.

导出引用

关德宝;黄维平;宋虹;田会元;耿翱翔;魏立波 . 串列圆柱体尾流和尾涡耦合振动试验研究[J]. 振动与冲击, 2014, 33(22): 26-29

GUAN De-bao;HUANG Wei-ping;SONG Hong;TIAN Hui-yuan;GENG Ao-xiang;WEI li-bo. Experimental investigation of wake flow and wave-vortex coupling induced vibration of two tandem and cylinders[J]. Journal of Vibration and Shock, 2014, 33(22): 26-29