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A numerical investigation of the effects of Reynolds number on vortex-induced vibration of the cylinders with different mass ratios and frequency ratios

  • Kang, Zhuang (College of Shipbuilding Engineering, Harbin Engineering University) ;
  • Zhang, Cheng (College of Shipbuilding Engineering, Harbin Engineering University) ;
  • Chang, Rui (College of Shipbuilding Engineering, Harbin Engineering University) ;
  • Ma, Gang (College of Shipbuilding Engineering, Harbin Engineering University)
  • Received : 2018.10.02
  • Accepted : 2019.02.19
  • Published : 2019.02.18

Abstract

The numerical simulations for the Vortex-induced Vibration (VIV) of the cylinders with different combinations of mass ratio and frequency ratio were performed under the Reynolds (Re) number ranges of 1450-10200, 5800-40800 and 13050-91800 by using the embedded programs in OpenFoam. By combining with the modified SST k-ω turbulence model, the coupled Unsteady Reynolds-Average Navier-Stokes equations and double-degree-of-freedom vibration equations were solved. After analyzing the results, it is found that the some characteristics of the VIV have changed with the increase of the range of Re number, and the effects of Re number on vibration characteristics are also different under different combinations of mass ratio and frequency ratio. On this basis, the influence law of Re number on the characteristics of VIV of the cylinders is summarized, which can provide a reference for the research of VIV under higher Re number.

Acknowledgement

Supported by : Central Universities, National Natural Science Foundation of China, Natural Science Foundation of Heilongjiang Province of China

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