Response Analysis of Fluid-structure Interaction in Pipelines Transporting Fluids

the present work,the transient response of structure and fluid in the pipelines with a changing flow velocity are studied by using the finite element method for structure and the CFD method for fluid. On the basis of this study,the hi-directional coupling is achieved,the time history curve of hydrodynamic pressure of fluid and the displacement in pile wall are obtained. And the response frequencies of structure and fluid are calculated by MATLAB through frequency domain conversion.