局部强剪切流作用下柔性圆柱的涡激振动响应

Pub Date : 1900-01-01 DOI:10.1115/OMAE2009-79899

Yoo-Chul Kim, Fumihiro Suzuki, C. Rheem

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引用次数: 0

摘要

对柔性立管在局部强剪切流作用下的涡激振动进行了分析。立管模型由聚四氟乙烯制成，长9.5m，直径0.0127m，厚度0.001m。立管沿线安装了11个二维加速度计。实验在东京大学模型流域进行，该模型流域宽度为10m，深度为5m，长度为50m。该模型安装在约30度的斜坡上，淹没在总长度的99%。在均匀电流中加入浸没0.72m的叶轮型加速剂产生的加速流，形成局部强剪切流。施加的顶部张力为2-8kgf，间隔为2kgf。文中还介绍了离散涡法(DVM)在类似条件下的计算结果。ASME版权所有©2009

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VIV Response of a Flexible Cylinder Under Locally Strong Sheared Flow

The vortex-induced vibration (VIV) analysis of a flexible riser under locally strong sheared flow is presented. The riser model is made of Teflon and has 9.5m length, 0.0127m diameter, and 0.001m thickness. 11 2-dimensional accelerometers are installed along the riser. The experiment is conducted at the model basin in the University of Tokyo whose width is 10m, depth is 5m, and length is 50m. The model is installed at about 30 degree of slope and submerged by 99% of the overall length. Locally strong sheared flow is made by adding accelerated flow generated by an impeller-type accelerator submerged by 0.72m to uniform current. The applied top tensions are 2–8kgf by 2kgf interval. The results of CFD calculation in the similar condition using discrete vortex method (DVM) are also presented.Copyright © 2009 by ASME

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