Forced Response Analysis of a Highly-Loaded Low-Pressure Compressor Stage With Inlet Distortions

Toracchio, Riccardo; Stapelfeldt, Sina; Hillewaert, Koen; Fontaneto, Fabrizio

doi:10.1115/gt2023-103881

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Forced Response Analysis of a Highly-Loaded Low-Pressure Compressor Stage With Inlet Distortions

Toracchio, Riccardo; Stapelfeldt, Sina; Hillewaert, Koen et al.

2023 • In Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics

Peer reviewed

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https://hdl.handle.net/2268/307508

DOI
10.1115/gt2023-103881

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Keywords :

Compressor; Distortion; NLH; Flutter; Forced-response

Abstract :

[en] Abstract Due to modern evolutions in propulsion, in view of obtaining higher propulsive efficiency, turbofan engines are subjected to ever higher inlet flow distortions. In these systems, structural damage can be induced by distortion patterns with excitation close to the blade natural frequency. To fill the gap currently present in literature about the impact of inlet distortions on the aeroelastic behaviour of engine components, this paper presents an aerodynamic damping and forced-response analysis on a highly-loaded axial compressor subjected to intake total pressure distortions. First, a stability analysis for the vibrational mode with natural frequency close to the resonance condition at the nominal speed of the machine is performed. Blade deformations are then computed through a distortion induced forced-response analysis at different distortion amplitudes. This work aims at studying the aeromechanical behaviour of a modern compressor, highlighting that the amplitude of the blade vibration does not increase linearly with the distortion amplitude.

Disciplines :

Mechanical engineering

Author, co-author :

Toracchio, Riccardo ; Université de Liège - ULiège > Aérospatiale et Mécanique (A&M) ; von Karman Institute for Fluid Dynamics , Rhode-St-Genèse, Belgium

Stapelfeldt, Sina; Imperial College London , London, Londonshire, United Kingdom

Hillewaert, Koen ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Design of Turbomachines

Fontaneto, Fabrizio; VKI - Von Karman Institute for Fluid Dynamics [BE] > Turbomachinery and Propulsion Department

Language :

English

Title :

Forced Response Analysis of a Highly-Loaded Low-Pressure Compressor Stage With Inlet Distortions

Publication date :

26 June 2023

Event name :

ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition

Event organizer :

American Society of Mechanical Engineers

Event place :

Boston, United States

Event date :

26 June 2023

Audience :

International

Main work title :

Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics

Publisher :

American Society of Mechanical Engineers, New York, United States

Peer reviewed :

Peer reviewed

Additional URL :

https://asmedigitalcollection.asme.org/GT/proceedings-pdf/doi/10.1115/GT2023-103881/7045179/v11at21a017-gt2023-103881.pdf

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since 06 October 2023

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