Aerodynamic Sound and Flow-induced vibration of an Elastically Supported Circular Cylinder in a Uniform Air-flow

This paper deals experimentally with aerodynamic sound generated by an elastically supported circular cylinder in a uniform air-flow. The circular cylinder is supported by two. plate springs-at both ends. The air-flow induces vibrations on the circular cylinder and generates aerodynamic sounds. In the experiment, the frequency spectra of cylinder vibration and radiated sound are analyzed. As a result, it becomes clear that the sound generated from the elastically supported circular cylinder is larger than the sound from the fixed one, when the frequency of Karman vortex agrees with the natural frequency of the circular cylinder