Traveling Wave Method for Pipe Fluid-Structure Interaction
Ren Jiantin,Lin Lei,Jiang Jiesheng
(Northwestern Polytechnical University, Xi'an, 710072)

Abstract: The vibration induced from fluid-structure interaction in liquid-filled pipes is analyzed by the traveling wave method. The longitudinal and transverse wave-guide equation of the coupling system are developed respectively. The coordinate transformation matrix is constructed to assemble each element matrix to the global matrix of the pipe system, and the scattering model of the coupled fluid-structure system is obtained. The vibration characters in two types of coupled problems such as the Poisson's and the junction interaction in liquid-filled pipes, and the pipe vibration stability are analyzed. The numerical examples verify the flexibility and efficiency of this method.
Keywords: liquid-filled pipe, fluid-structure interaction, traveling wave method.