Numerical Prediction of Mode Splitting on Rotating Disks
This project aims to develop a numerical tool for predicting accurately resonance frequencies of high-heads hydraulic turbines. Both the presence of water and the rotation of the disk-like structure induce shifts in these frequencies compared to a standing disk in air, respectively added mass and mode split. The project is articulated around the following steps: 1) understanding the physical phenomenon causing mode split, 2) developing the numerical tool for natural frequency prediction of a disk, 3) comparing model results with experimental data (communicated by Andritz Hydro) and 4) if time permits, adapt the model to real turbine geometry.
The developed tool will enable the prevention of resonance induced fatigue, which may cause turbines to fail prematurely. TO BE CONT'D