Abstract
A finite element method based on ALE formulation has been adopted in order to examine the effect of periodic velocity excitation on the aerodynamic characteristics of an oscillating circular cylinder. Periodic excitation, which was placed on the cylinder surface, stimulated the separated shear layers around the cylinder, and numerical results showed that some excitation can reduce negative damping, which is caused by unsteady lift force, and thereby stabilize the aerodynamics of the cylinder. Furthermore, the change of lift phase caused by periodic excitation seems to be important in stabilizing the aerodynamics of the cylinder. The simulation also confirmed that periodic excitation can suppress the vortex-induced vibration of the cylinder.
| Original language | English |
|---|---|
| Pages (from-to) | 269-278 |
| Number of pages | 10 |
| Journal | International Journal of Computational Fluid Dynamics |
| Volume | 12 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - 1999 |
Keywords
- Aerodynamic instability
- Circular cylinder
- Finite element method
- Periodic excitation
- Vibration control
- Vortex-induced vibration
ASJC Scopus subject areas
- Computational Mechanics
- Aerospace Engineering
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Mechanics of Materials
- Mechanical Engineering