基于ANSYS的输流管道液固耦合有限元仿真

Simulation of Fluid-structure Interaction in Fluid Conveying Pipes by ANSYS

本文利用ANSYS软件建立输流直管有限元模型,仿真给定输入流体流速脉冲时管道在3种不同支撑方式下的动力学响应;分析不同支撑条件下管道振动(固支点反作用力、特征点、截面位移及截面应力)的情况,并根据分析结果对输流管路的支撑方式提出建议,以减小液固耦合引起的管路振动及其对管道支撑结构的破坏,计算结果对管道系统的优化设计和振动对策有一定的指导意义。

This paper establishes a finite element model of a straight fluid conveying pipe by ANSYS.The dynamic responses of the pipeline with a given input fluid flow rate pulse,in three different supported modes,were simulated using the finite element method and the method of computational fluid dynamics.The results of pipe vibration,including the displacement of pipe wall points,fixed pivot reacting force,cross-sectional displacement and stress,were analyzed.According to the analysis results,proper support types of fluid conveying pipe were recommended with the aim to reduce pipeline vibration and damage to the support structure of pipeline caused by the fluid-solid interaction.