A method to quickly predict aeroelastic stability or instability of blade row complex vibration modes is described. The computational approach is based on a time-linearized Navier-Stokes aeroelastic solver, and a specifically developed program. Time is saved by doing a few fundamental solver computations and then superposing the solutions to analyze each complex mode. Test results on two low pressure turbines are presented.
A Method to Assess Flutter Stability of Complex Modes / A. Arnone; F. Poli; C. Schipani. - STAMPA. - Unsteady Aerodynamics, Aeroacoustics and Aeroelasticity of Turbomachines:(2003), pp. 31-40. (Intervento presentato al convegno 10th International Symposium on Unsteady Aerodynamics, Aeroacustics and Aeroelasticity of Turbomachines (ISUAAAT) tenutosi a Durham, NC, USA nel 7-11 September).
A Method to Assess Flutter Stability of Complex Modes
ARNONE, ANDREA;POLI, FRANCESCO;
2003
Abstract
A method to quickly predict aeroelastic stability or instability of blade row complex vibration modes is described. The computational approach is based on a time-linearized Navier-Stokes aeroelastic solver, and a specifically developed program. Time is saved by doing a few fundamental solver computations and then superposing the solutions to analyze each complex mode. Test results on two low pressure turbines are presented.
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