In this paper, a fluid-structure interaction model based on Surface vorticity Method (SVM) is used for studying flow-induced vibration of tube bundle. The flow-induced vibration of four tubes in rotated square arrangement and a staggered tube bundle of three rows five columns at high sub-critical Reynolds number range are simulated. The fluid force, tube response and vorticity maps are presented. It can be seen that the vorticity maps of four rotated square tubes change dramatically when the tubes become flexible. From the vorticity maps and vibration response of a staggered tube bundle at different structural parameters it was found that with the decrease of tube natural frequency, the maximal vibration response moved from the third row to the first row. The results also show that when the tubes are more flexible, the flow pattern changes drastically and the fluid-structure interaction poses a dominant impact on the flow.
展开▼
