This is a course on the multi-disciplinary subject of turbomachinery aeromechanics. The subject combines the sub-topics of unsteady aerodynamics, structural dynamics and turbomachinery. The course will focus on the two main aeromechanical problems (flutter and forced response) that affect axial turbomachines. The students will learn the standard methods that are used to analyze aeromechanical problems and the assumption behind these standard methods. The students will also gain experience in reading literature on the field. The course will also give the students experience in performing a state-of-the-art aeromechanical analyses using commercial software that is currently used in industry. The students will also gain experience in presenting the results from aeromechanical analyses
The following topics will be covered in the course:
- Modelling of blade motion through modal analysis
- Application of FEM (Finite Element Method) on blade geometries
- Theory of unsteady aerodynamics for aeromechanics (forcing, damping, linear assumption)
- Coupling of structural-dynamic and fluid-dynamic equations
- Theory of flutter and Travelling Wave Modes (TWM)
- Theory of Forced Response and Campbell diagrams
- Industrial perspective of turbomachinery aeromechanics
- Analysis of the current literature
- Using ANSYS CFX software to solve a flutter problem (this include mesh generation, setup and running of steady-state simulations, setting up unsteady flow simulation with moving mesh, running unsteady flow simulation, post processing results for unsteady flow simulation)
- Flutter analysis and reporting