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RISValidation of a Methodology to Assess the Flutter Limit Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part II: Rotational Speed Effects
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effect of the operating conditions on the vibration amplitude trends of an isolated low-pressure turbine rotor is described. The study utilizes an analytical model correlating the aerodynamic and dry-friction work ...
Validation of a Methodology to Assess the Flutter Limit-Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part I: Mach Number Effects
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a methodology to estimate the vibration amplitude of fluttering low-pressure turbine (LPT) blades saturated due to friction effects. The study utilizes an analytical model that balances aerodynamic work ...
A New Nonlinear Time-Domain Flutter Analysis Approach for Distorted Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper aims to establish an efficient and accurate computational fluid dynamic (CFD) method for calculating the flutter stability of fan blades in the presence of inlet distortion due to crosswind. Due to the asymmetry ...
Fan Non-Synchronous Forced Vibration Under Crosswind
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, a new aeroelastic phenomena for fans, referred to as non-synchronous forced vibration (NSFV), is presented. This type of aeroelastic instability can occur at high crosswind conditions when the flow at the ...