Author/Authors :
Tao,Shi-bo Key Lab of Structures Dynamic Behavior and Control - Harbin Institute of Technology - Ministry of Education, China , Tang, Ai-ping Key Lab of Structures Dynamic Behavior and Control - Harbin Institute of Technology - Ministry of Education, China , Xin,Da-bo Key Lab of Structures Dynamic Behavior and Control - Harbin Institute of Technology - Ministry of Education, China , Liu,Ke-tong Key Lab of Structures Dynamic Behavior and Control - Harbin Institute of Technology - Ministry of Education, China , Zhang1,Hong-fu Key Lab of Structures Dynamic Behavior and Control - Harbin Institute of Technology - Ministry of Education, China
Abstract :
The vortex-induced vibration is one of the most important factors to make the engineering failure in wind engineering. This paper focuses on the suppression method of vortex-induced vibration that occurs on a circular cylinder fitted with vortex generators, based on the wind tunnel experiment. The effect of the vortex generators is presented with comparisons including the bare cylinder. The experimental results reveal that the vortex generators can efficiently suppress vortex-induced vibration of the circular cylinder. Vortex generator control can make the boundary layer profile fuller and hence more resistant to separation. The selections of skew angles and the angular position have a significant influence on the vortex generator control effect. By correlation analysis, it can be concluded that the vortex generators can inhibit the communication between the two shear layers and produce streamwise vortices to generate a disturbance in the spanwise direction.
Keywords :
Vortex Generators , Vortex-Induced , Circular Cylinder , Vibration Suppression
