Research on the Influence of Fluid Velocity Changes on the Vibration of Pipeline

Pipeline will vibrate due to fluid-solid coupling, and the vibration is often harmful, so how to reduce the vibration becomes an important research topic. In this paper, the finite element analysis method is used to study the stress changes of the pipe bending part and the vibration of the straight pipe section under various conditions of fluid velocity changing. The results show that in order to reduce the maximum stress and vibration, the fluid velocity should increase steadily, and in the finite increasing time, the later increase of the fluid velocity should be as gentle as possible. It can provide guidance for the operation of valves or other fluid control components in the pipeline for practical operation.