Abstract
This paper presents numerical results for in-line and cross-flow oscillations of an elastically supported circular cylinder which is located in a uniform flow. The in-line oscillation of the circular cylinder has been investigated by many researchers, and the interested phenomena with respect to the oscillation have been found in a wide range of the Scruton number. For the in-line oscillation, there are two peaks of amplitudes at back and forth of velocity of a half of the critical reduced velocity. However, characteristics of excitation mechanism in the ranges in which two peaks of amplitudes appear are quite different. On the other hand, the cross-flow oscillation appears at the high reduced velocity. Therefore, we compute the in-line and cross-flow oscillations by three-dimensional simulation and the numerical results are compared with experimental
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