A numerical study on the effects of mass moment and moment of inertia on hydrofoil&rsquo;s flow-induced vibration and noise

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (4) : 213-221.

A numerical study on the effects of mass moment and moment of inertia on hydrofoil’s flow-induced vibration and noise

LIU Long ZHANG Huaixin YAO Huilan

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Abstract

The flow-induced vibration and sound radiation problem of three-dimensional hydrofoil with two-degree of freedom (2DOF) was studied in this paper with the URANS method.The hydrofoil’s vibration was implemented with calculating the hydrofoil’s motion equations,the flow field was calculated with the k-ω SST turbulence model.First of all,the mesh independent verification and time step verification were carried out.The method was validated by comparing the simulation results with that of experiment and the Theodorsen’s theory,which shows quantitatively agreement.Furthermore,the impact of mass moment and moment of inertia to the vibration and the sound radiation problems were calculated.The calculation results show that the effects of mass moment and moment of inertia to the vibration of hydrofoil are significant,and the hydrofoil’s vibration will increase the noise.

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Three Dimensional Hydrofoil / Flow-induced Vibration / Sound Radiation

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LIU Long ZHANG Huaixin YAO Huilan. A numerical study on the effects of mass moment and moment of inertia on hydrofoil’s flow-induced vibration and noise[J]. Journal of Vibration and Shock, 2019, 38(4): 213-221

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