| 化怡龙，侯静，牛智搏，冯现洪，付世晓，许玉旺.导流板旋转失效状态下刚性圆柱涡激振动数值模拟研究[J].海洋工程,2025,(5):15~25 |
| 导流板旋转失效状态下刚性圆柱涡激振动数值模拟研究 |
| Numerical simulation of vortex-induced vibration of a rigid cylinder with rotating failure fairing |
| 投稿时间：2024-08-25 修订日期：2024-09-30 |
| DOI：10.16483/j.issn.1005-9865.2025.05.002 |
| 中文关键词: 导流板 旋转失效 涡激振动 特征长度 数值模拟 |
| 英文关键词:fairing rotational failure VIV characteristic length numerical simulation |
| 基金项目:山东省重点研发计划项目（2021SFGC0701） |
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| 中文摘要: |
| 导流板是海洋工程中广泛使用的涡激振动抑制装置之一，通常能够绕立管自由旋转以适应不同来流方向。但在实际应用中，导流板可能会丧失转动自由度，旋转失效状态下的导流板可能导致严重的驰振。基于OpenFOAM开源软件，使用有限体积法结合雷诺时均N-S（Reynolds-averaged Navier-Stokes，简称RANS）方程和SST k-ω湍流模型，研究了刚性圆柱在导流板旋转失效后的涡激振动响应特性。结果表明：在导流板旋转失效的情况下，当约化速度较低（Vr<5）时，导流板能够延后涡泄，不会出现驰振现象；随着约化速度增大，尾涡会附着在导流板上，导致圆柱出现剧烈的驰振。此外，导流板的特征长度越大，驰振的幅值及激发驰振的约化速度范围越大。 |
| 英文摘要: |
| The fairing is a widely used passive vortex-induced vibration (VIV) suppression device in ocean engineering. Typically, fairings can rotate freely to align with the incoming flow direction. However, in practical applications, fairings may lose their rotational freedom, resulting in severe galloping. This study investigates the VIV response of a rigid cylinder with rotational failure fairing using the finite volume method based on the Reynolds-averaged Navier-Stokes(RANS) equations and SST k-ω model in OpenFOAM. The results indicate that, under rotational failure fairing, vortex shedding is delayed and galloping does not occur at low reduced velocities (Vr<5). However, as the reduced velocity increases, the vortex attaches to the fairing, triggering significant galloping. Furthermore, a larger characteristic length leads to greater galloping amplitude and a wider range of reduced velocities that induce galloping. |
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