基于ALE法的输电塔-风流固耦合振动特性研究

Study on Coupling Vibration Characteristic of Fluid-Structure on Transmission Tower Based on ALE Method

基于ALE(拉格朗日-欧拉)法推导了结构-风场联合作用的流固耦合方程,并对结构的运动方程与流体控制方程进行了空间离散及迭代求解。应用此方法,分析输电塔-风耦联自由振动特性,得到在耦合场作用下输电塔结构的振动特性,计算结果表明了本文采用方法求解非线性耦合振动问题的有效性。

The fluid-structure coupling equations of fluid-structure interaction are deduced based on the Arbitrary Lagrangian-Eulerian description.The Navier-Stokes equations and the equation of the motion of the structure are discreted and iteratived.In this paper,the vibration charecteristics of transmission tower-wind are analyzed, and the results show that the use of this method for solving nonlinear vibration problem is valid.