Coupled three-dimensional aeroelastic stability analysis of bladed disks
- Univ. Pierre and Marie Curie, Paris (France)
In the present work an algorithm for the coupled aeromechanical computation of three-dimensional compressor cascades vibrating in a traveling-wave mode is presented and applied to the determination of aeroelastic stability of a transonic fan rotor. The initial vibratory modes are computed using a finite-element structural analysis code. The unsteady flow field response to blade vibration is estimated by numerical integration of the three-dimensional unsteady Euler equations. Coupling relations are formulated in the frequency domain, using a mode-modification technique, based on modal projection. The vibratory mode is updated at the end of the aerodynamic simulation of each period, and the updated mode is used for the simulation of the next period. A number of results illustrate the method's potential.
- OSTI ID:
- 5746419
- Journal Information:
- Journal of Turbomachinery; (United States), Vol. 115:4; ISSN 0889-504X
- Country of Publication:
- United States
- Language:
- English
Similar Records
An analysis system for blade forced response
Inlet distortion generated forced response of a low-aspect-ratio transonic fan