Abstract:

Based on Fluent 6, numerical simulation code for solving aeroelastic problems is first presented by using loosely coupled method in this paper. The fluid domain can be solved by adopting serial or parallel computation method, and the structure domain is solved by adopting Newmark method, and finally the interface coupling between the fluid and structure domains is implemented through dynamic mesh technique. The calculation process and the special method to deal with the parallel computation in fluid domain are then introduced. Finally, numerical simulation of vortexexcited vibration of a 2D square cylinder at Reynolds number of 22000 is done. The computed results and the comparison with those in literatures could verify the validity of the present program.

Key words: vibration and wave, 2D square cylinder, aeroelasticity, vortexinduced vibration, numerical simulation

摘要：

基于流体软件Fluent 6，采用松耦合方法搭建了求解气动弹性问题的数值计算平台，其中流体域可采用串行或并行计算，结构域采用Newmark法编程，流体域和结构域界面的耦合采用动网格技术实现。然后，主要介绍求解气动弹性问题数值计算平台的计算流程和流体域采用并行计算时的特别处理方法。最后，采用该计算平台进行了Re=22000时二维方柱横风向涡激振动的数值模拟，通过与已有文献结果的比较验证了其有效性。

关键词: 振动与波, 二维方柱, 气动弹性, 涡激振动, 数值模拟