Last modified: 2016-06-23
Abstract
Vibration is a common problem in the operation process of the pumping station. This long-term vibration has influence on the equipment and the health of staff. Serious vibration affects the safety and reliability of the pump station. As a result, for the pumping stations with steel passageways, a new type structure of pumping station, it is very crucial to predict and assess the vibration response of the pumping station structure including steel passageways.
Although a lot of research was carried on the flow-excited vibration analysis of the pump, fluid-solid interaction is usually not taken into account, especially the steel passageway. In this study, in order to obtain the pressure pulsations occurred in the large axial-flow pump and to study the mechanics of the flow-excited vibration, impressible continuity equation, Reynolds average Navier-Stokes equation and turbulent equations are used to simulate the 3D whole channel unsteady turbulent flow of the axial-flow pump of steel passageway pumping station. Advanced sliding mesh technology are used to simulate the interaction between the rotor and the stator in the unit. Velocity and pressure distributions of the flow passage are analyzed.
FSI model considering the interactions of the 3D unsteady turbulent flow with the structure and steel passageway is proposed in the frame of FEM by ADINA. The suitable interface condition in the interface of fluid and structure is used for the energy transition between them. At last, FSI vibration analysis for a pumping station is used to predict the dynamic responses of fluid and structure.