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Journal of Shanghai Jiaotong University (Science)

, Volume 24, Issue 1, pp 113–121 | Cite as

Numerical Research of Flow past a Circular Cylinder with Splitter Plate at a Subcritical Reynolds Number Region

  • Xinyu An (安新宇)Email author
  • Baowei Song (宋保维)
  • Wenlong Tian (田文龙)
  • Congcong Ma (马聪聪)
Article
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Abstract

Numerical research of flow past a circular cylinder with a splitter at the subcritical Reynolds number region of 5 × 104—9 × 104 was researched based on Computational Fluid Dynamics (CFD) through solving twodimensional incompressible unsteady Reynolds-averaged Navier-Stokes (URANS) equations with the shear stress transport (SST) k-ω turbulence model. Three different grid resolutions were employed in the verification and validation study of the adopted turbulence model. Various fluid characteristics such as Strouhal number, lift coefficient of the cylinder and the splitter with respect to various splitter lengths and different Reynolds numbers were investigated. It was revealed that the lift coefficient ratio of the splitter over the cylinder remains near 1.6 when the splitter length is 1.5—4 times the cylinder’s diameter. Vortex shedding is strongly inhibited when the splitter length is greater than a critical value of around four times the cylinder’s diameter. The phase difference of the lift coefficient on the upper and lower surface of the splitter varies between −30° and 30°. The maximal lift coefficients are reached when the splitter length is about 2 times the cylinder’s diameter. Besides, the splitter length has little influence on the separation angle around the cylinder.

Key words

splitter plate lift force vortex shedding high Reynolds number URANS 

CLC number

O 351.2 

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Copyright information

© Shanghai Jiaotong University and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Xinyu An (安新宇)
    • 1
    Email author
  • Baowei Song (宋保维)
    • 1
  • Wenlong Tian (田文龙)
    • 1
  • Congcong Ma (马聪聪)
    • 2
  1. 1.School of Marine Science and TechnologyNorthwestern Polytechnical UniversityXi’anChina
  2. 2.Laboratoire RobervalUniversité de Technologie de CompiègneCompiègneFrance

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