Three-dimensional computation for flow-induced vibrations in in-line and cross-flow directions of a circular cylinder
We present numerical results for in-line and cross-flow vibrations of a circular cylinder, which is immersed in a uniform flow and is elastically supported by damper-spring systems to compute vibrations of a rigid cylinder. In the case of a circular cylinder with a low Scruton number, it is well-known that two types of self-excited vibrations appear in the in-line direction in the range of low reduced velocities. On the other hand, a cross-flow vibration of the circular cylinder can be excited in the range of high reduced velocities. Therefore, we compute the flow-induced vibrations of the circular cylinder in the wide range of the reduced velocities at low and high Scruton numbers and discuss about excitation mechanisms in the in-line and cross-flow directions. Copyright (c) 2011 John Wiley & Sons, Ltd.
circular cylinder in-line and cross-flow vibrations vibration characteristics third-order upwind finite element method arbitrary lagrangian-eulerian method 3-d computation