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Volume 50 Issue 3
Mar.  2024
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Journal of Beijing University of Aeronautics and Astronautics  > 2024  >  50(3): 706-715.
ZOU L，WU W N，LIU J，et al. Numerical simulation of flow around two tandem wavy conical cylinders at subcritical Reynolds number[J]. Journal of Beijing University of Aeronautics and Astronautics，2024，50（3）：706-715 （in Chinese） doi: 10.13700/j.bh.1001-5965.2022.0285
Citation: ZOU L，WU W N，LIU J，et al. Numerical simulation of flow around two tandem wavy conical cylinders at subcritical Reynolds number[J]. Journal of Beijing University of Aeronautics and Astronautics，2024，50（3）：706-715 （in Chinese） doi: 10.13700/j.bh.1001-5965.2022.0285
shu

Numerical simulation of flow around two tandem wavy conical cylinders at subcritical Reynolds number

doi: 10.13700/j.bh.1001-5965.2022.0285

  • School of Mechanical and Electronic Engineering，Wuhan University of Technology，Wuhan 430000，China

Funds:  National Natural Science Foundation of China (11972268)
More Information
  • Corresponding author: E-mail：l.zou@163.com
  • Received Date: 27 Apr 2022
  • Accepted Date: 16 Aug 2022
    • Available Online: 19 Aug 2022
  • Publish Date: 19 Aug 2022
    Abstract

  • Regarding the arrangement of wind energy harvesting structures, based on the large eddy simulation (LES) method, the lift-drag characteristics and flow structures of two tandem wavy conical cylinders are studied with a subcritical Reynolds number (Re = 3900) and the spacing ratio. Results show that due to the influence of the upstream wavy conical cylinder, the fluctuating lift coefficients of the downstream wavy conical cylinder increase substantially. When the spacing ratio is 3, the distribution form of the time-averaged pressure coefficient is different from that of other spacing ratios, showing a reverse distribution. With the increasing spacing ratio, a large number of rib vortices are generated after the wake of the upstream wavy conical cylinder is fully developed, causing impact on the surface of the downstream wavy conical cylinder and generating a large fluctuating lift. Compared with the single straight cylinder, the two tandem wavy conical cylinders increase the fluctuating lift coefficient by about 15.3 times, and reduce the drag coefficient by about 0.172. These results can provide a useful reference for the arrangement of wind energy harvesting structures.

     

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