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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.4 pt.B: Fluid-Structure Interaction >NUMERICAL SIMULATION OF THE MULTIPLE BRANCH TRANSVERSE RESPONSE OF A LOW MASS RATIO ELASTICALLY SUPPORTED CIRCULAR CYLINDER
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NUMERICAL SIMULATION OF THE MULTIPLE BRANCH TRANSVERSE RESPONSE OF A LOW MASS RATIO ELASTICALLY SUPPORTED CIRCULAR CYLINDER

机译：低质量比弹性支撑圆柱的多分支横向响应的数值模拟

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摘要

The paper presents the results of a numerical investigation of the transverse Vortex-Induced Vibrations of an undamped, low mass ratio elastically supported circular cylinder that was subjected to a uniform flow that resulted in a Reynolds number of 10~4. The numerical simulations were performed using a two-dimensional Large Eddy Simulation model. The computed cylinder response exhibits three branches; the initial, upper and lower branches. The computed initial and lower branches, which exhibit 2S and 2P modes of shedding respectively, show many similarities to those reported from experiments. However, the computed upper branch, on which a maximum amplitude of response of O.83D was achieved, shows some dissimilarities to those reported from experiments. The failure to correctly simulate the upper branch response is thought to be due to the high degree of flow three-dimensionality that has been reported to exist on the upper branch.
机译：本文介绍了对无阻尼，低质量比的弹性支承圆柱进行横向涡流振动的数值研究的结果，该圆柱受到均匀流动，产生的雷诺数为10〜4。使用二维大涡模拟模型进行数值模拟。计算出的圆柱体响应表现出三个分支。最初的，上部和下部分支。计算出的初始分支和下部分支分别显示2S和2P脱落模式，显示出与实验报道的许多相似之处。但是，计算得到的上部分支（在该分支上达到了O.83D的最大响应幅度）显示出与实验报告的那些相似。未能正确模拟上部分支响应的原因被认为是由于据报道存在于上部分支上的高流动三维度。

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