Investigating the effect of the location of flow controllers on the reduction of vortices around the cylinder

Document Type : Original Article

Authors

1 Master's student, Imam Hossein University (AS), Tehran, Iran

2 Ph.D., Imam Hossein University (AS), Tehran, Iran

Abstract

Controlling the flow on the cylinder and postponing the flow separation area from the surface of the cylinder, Shrinking the wake area and reduces the drop of vortices and increases the life of the structure. The phenomenon of fatigue, which is caused by loading and fluctuating stresses on the structures, causes depreciation and reduces the life of the structures. Flow controllers play an inhibitory role in creating the phenomenon of fatigue. In this research, the effect of two control cylinders for different distances from the main cylinder at Reynolds 140 was evaluated. The main goal of this research is to find a certain distance to place the control cylinders from the main cylinder in which the vortex shedding distance is reduced to an optimal level and neutralized. For this purpose, transient numerical analysis was performed by Fluent software. The results of this research indicate that there is a certain distance to neutralize the fall of vortices. This distance, for Reynolds 140, is equal to 0.8 of the diameter of the main cylinder, and it can be referred to as the golden distance, which is considered an important component in the design.

Keywords

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References

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History

  • Receive Date: 21 October 2022
  • Revise Date: 15 December 2022
  • Accept Date: 29 December 2022
  • Publish Date: 20 February 2023

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