Numerical Simulation of Vortex⁃Induced Vibration of Cylinder with Porous Media

doi:10.12422/j.issn.1672-6952.2025.06.007

Abstract

Abstract:

Vortex-induced vibration represents a critical mechanism of structural damage,which not only reduced service life of workpieces but can also lead to structural deformation and failure,thereby posing safety risks or causing economic losses. This study conducts a numerical simulation of vortex-induced vibrations in porous media cylinders using CFD software, employing the k-ω turbulence model and SIMPLE pressure-velocity coupling method.Simulations were carried out on single porous media cylinders, three porous media cylinders,and transversely arranged cylinders in matrix configurations to study vortex-induced vibration problems under various scenarios.By comparative analysis,the study examined the impact of porous media on cylinder vortex-induced vibrations in different arrangement scenarios.The results indicate that in all arrangement scenarios, the addition of porous media can result in uniform force distribution on the cylinders and a more stable flow field,effectively eliminating the occurrence of vortex-induced vibrations.This extends the service life of the workpieces,enhances efficiency,and demonstrates significant practical value and application prospects.

Key words: Vortex?induced vibration, Porous media, Flow around a cylinder, Vortex shedding, Numerical simulation

摘要：

涡激振动是导致结构破坏的主要原因之一，该现象不仅会缩短工件的使用寿命，还可能使原本稳定的结构变形失效，进而引发安全隐患或造成经济损失。基于CFD软件，采用k-ω湍流模型、SIMPLE压力速度耦合方法对多孔介质圆柱体涡激振动进行了数值模拟。对单多孔介质圆柱体、三多孔介质圆柱体和矩阵排列圆柱体中横向排列的多种场景下的涡激振动问题分别开展了模拟研究，对比分析了不同排列方式下多孔介质对圆柱体涡激振动的影响。结果表明，在各种排列方式下，添加多孔介质可使圆柱体受力均匀、流场更稳定，显著抑制涡激振动现象的发生；同时，还可延长工件的使用寿命，进一步提高经济效益，具有良好的使用价值和应用前景。

关键词: 涡激振动, 多孔介质, 圆柱绕流, 涡旋脱落, 数值模拟

CLC Number:

TE953

Yangxi GAI, Ligang CHENG, Shengyi WU, Li FU, Hao PANG. Numerical Simulation of Vortex⁃Induced Vibration of Cylinder with Porous Media[J]. Journal of Liaoning Petrochemical University, 2025, 45(6): 53-60.

盖阳曦, 程利刚, 伍盛一, 付丽, 庞浩. 多孔介质降低圆柱体涡激振动的数值模拟分析[J]. 辽宁石油化工大学学报, 2025, 45(6): 53-60.

Figures/Tables 15

Fig.1 Three?dimensional vortex?induced vibration geometric model diagram

Fig.2 Grid division diagram of porous media watershed。

Fig.3 Results of mesh independence verification

Table 1 Comparison between simulation results and literature results

序号	文献	阻力系数平均值	升力系数幅值	斯特劳哈尔数
1	[15]	1.310	0.650	0.190
2	[16]	1.240	0.620	0.210
3	[17]	1.371	0.740	0.200
4	[18]	1.350	0.500	0.180
5	本文	1.465	0.770	0.200

Fig.4 Velocity distribution cloud diagram in single cylinder flow field

Fig.5 Velocity variation curve in the single cylinder flow field

Fig.6 Pressure cloud inside the flow field of single cylinder

Fig.7 Pressure variation curve in the single cylinder flow field

Fig.8 Curves of velocity distribution and pressure distribution in the single cylinder flow

Fig.9 Velocity distribution cloud diagram in the three?cylinder flow field

Fig.10 Pressure variation curve in the three?cylinder flow field

Fig.11 Velocity distribution curve in the three?cylinder flow field

Fig.12 Velocity distribution cloud diagram in the flow field of four cylinders arranged in a square

Fig.13 Pressure variation curve in the flow field of four cylinders arranged in a square

Fig.14 Pressure distribution curve in the flow field of four cylinders arranged in a square

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