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Proceedings Papers

An Analysis of the Aeroelastic Behaviour of a Typical Fan-Blade With Emphasis on the Flutter Mechanism

Proc. ASME. GT1996, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General, V005T14A009, June 10–13, 1996

Paper No: 96-GT-078

DOI: https://doi.org/10.1115/96-GT-078

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Topics: Blades, Flutter (Aerodynamics), Aeroelasticity, Flow (Dynamics), Boundary-value problems, Fluid structure interaction, Fluids, Geometry, NASA, Rotors

Proceedings Papers

A Review of Analysis Techniques for Blade Tip-Timing Measurements

S. Heath, M. Imregun

Proc. ASME. GT1997, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, V004T15A016, June 2–5, 1997

Paper No: 97-GT-213

DOI: https://doi.org/10.1115/97-GT-213

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Topics: Blades, Rotors, Vibration, Manufacturing, Probes, Disks, Engineering standards, Lasers, Steam turbines, Strain gages

Proceedings Papers

Predicted Influence of Intake Acoustics Upon Part-Speed Fan Flutter

J. W. Chew, M. Vahdati, M. Imregun

Proc. ASME. GT1998, Volume 2: Aircraft Engine; Marine; Microturbines and Small Turbomachinery, V002T02A018, June 2–5, 1998

Paper No: 98-GT-558

DOI: https://doi.org/10.1115/98-GT-558

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Topics: Acoustics, Flutter (Aerodynamics), Computational fluid dynamics, Acoustical properties, Aerodynamics, Approximation, Blades, Damping, Ducts, Engines

Proceedings Papers

A Resonance Tracking Algorithm for the Prediction of Turbine Forced Response With Friction Dampers

C. Bréard, J. S. Green, M. Vahdati, M. Imregun

Proc. ASME. GT2000, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V004T03A015, May 8–11, 2000

Paper No: 2000-GT-0372

DOI: https://doi.org/10.1115/2000-GT-0372

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Topics: Algorithms, Dampers, Friction, Resonance, Turbines, Blades, Rotors, Computation, Excitation, Flow (Dynamics)

Proceedings Papers

An Integrated Time-Domain Aeroelasticity Model for the Prediction of Fan Forced Response Due to Inlet Distortion

C. Bréard, M. Vahdati, A. I. Sayma, M. Imregun

Proc. ASME. GT2000, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V004T03A016, May 8–11, 2000

Paper No: 2000-GT-0373

DOI: https://doi.org/10.1115/2000-GT-0373

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Topics: Aeroelasticity, Blades, Damping, Pressure, Boundary-value problems, Computation, Ducts, Fans, Finite element analysis, Fluctuations (Physics)

Proceedings Papers

Aerodynamics and Aeroelasticity of Impeller Vane Interactions in a High Pressure Ratio Centrifugal Compressor

S. K. Krishnababu, M. Imregun, J. S. Green, D. Hoyniak

Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 1201-1208, June 14–18, 2010

Paper No: GT2010-22595

DOI: https://doi.org/10.1115/GT2010-22595

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Topics: Aerodynamics, Aeroelasticity, Compressors, High pressure (Physics), Impellers, Diffusers, Annulus, Blades, Computation, Modeling

Journal Articles

Thermoelastic Modeling of Rotor Response With Shaft Rub

S. Ziaei-Rad, E. Kouchaki, M. Imregun

J. Appl. Mech. November 2010, 77(6): 061010.

DOI: https://doi.org/10.1115/1.4000904

Published Online: August 20, 2010

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Topics: Heat transfer, Rotors, Vibration, Friction, Modeling, Heat

Journal Articles

A Numerical Study of Labyrinth Seal Flutter

L. di Mare, M. Imregun, J. S. Green, A. I. Sayma

J. Tribol. April 2010, 132(2): 022201.

DOI: https://doi.org/10.1115/1.3204774

Published Online: April 6, 2010

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Topics: Cavities, Flow (Dynamics), Flutter (Aerodynamics), Pressure, Stability, Steady state, Damping, Aerodynamics, Finite element analysis

Proceedings Papers

Numerical Investigation of Labyrinth Seal Aeroelastic Stability

R. Phibel, L. di Mare, J. S. Green, M. Imregun

Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 573-583, June 8–12, 2009

Paper No: GT2009-60017

DOI: https://doi.org/10.1115/GT2009-60017

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Topics: Stability, Cavities, Fluids, Acoustics, Aircraft engines, Boundary-value problems, Damping, Design, Engineering simulation, Flow (Dynamics)

Journal Articles

Parameters Identification for Nonlinear Dynamic Systems Via Genetic Algorithm Optimization

A. C. Gondhalekar, E. P. Petrov, M. Imregun

J. Comput. Nonlinear Dynam. October 2009, 4(4): 041002.

DOI: https://doi.org/10.1115/1.3187213

Published Online: August 24, 2009

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Topics: Algorithms, Clearances (Engineering), Genetic algorithms, Optimization, Stiffness, Noise (Sound), Nonlinear dynamical systems

Proceedings Papers

Forced Response Assessment Using Modal Force Based Indicator Functions

M. Vahdati, C. Breard, G. Simpson, M. Imregun

Proc. ASME. GT2008, Volume 5: Structures and Dynamics, Parts A and B, 665-672, June 9–13, 2008

Paper No: GT2008-50306

DOI: https://doi.org/10.1115/GT2008-50306

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Topics: Blades, Compressors, Design, Finite element analysis, Finite element model, Flow (Dynamics), Navier-Stokes equations, Pressure, Rotors, Stators

Proceedings Papers

Analysis of Low-Pressure Turbine Flutter for Different Shroud Interfaces

X. Wu, M. Vahdati, C. Schipani, M. Imregun

Proc. ASME. GT2007, Volume 5: Turbo Expo 2007, 629-636, May 14–17, 2007

Paper No: GT2007-27377

DOI: https://doi.org/10.1115/GT2007-27377

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Topics: Flutter (Aerodynamics), Pressure, Turbines, Wear, Design, Rotors, Annulus, Blades, Damping, Finite element analysis

Proceedings Papers

Influence of Stagger Angle Variation on Aerodynamic Damping and Frequency Shifts

I. Sladojevic´, A. I. Sayma, M. Imregun

Proc. ASME. GT2007, Volume 5: Turbo Expo 2007, 683-700, May 14–17, 2007

Paper No: GT2007-28166

DOI: https://doi.org/10.1115/GT2007-28166

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Topics: Damping, Blades, Aircraft engines, Mechanical properties, Rotors

Proceedings Papers

A Numerical Investigation of Aeroacoustic Fan Blade Flutter

X. Wu, M. Vahdati, A. I. Sayma, M. Imregun

Proc. ASME. GT2003, Volume 4: Turbo Expo 2003, 357-364, June 16–19, 2003

Paper No: GT2003-38454

DOI: https://doi.org/10.1115/GT2003-38454

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Topics: Blades, Flutter (Aerodynamics), Ducts, Manufacturing, Pressure, Acoustical properties, Aeroelasticity, Flow (Dynamics), Flow separation, Nozzles

Proceedings Papers

Investigation of the Influence of Aerodynamic Coupling on Response Levels of Mistuned Bladed Discs With Weak Structural Coupling

I. Sladojevic´, E. P. Petrov, A. I. Sayma, M. Imregun, J. S. Green

Proc. ASME. GT2005, Volume 4: Turbo Expo 2005, 543-551, June 6–9, 2005

Paper No: GT2005-69050

DOI: https://doi.org/10.1115/GT2005-69050

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Topics: Disks, Blades, Aerodynamics, Annulus, Computational fluid dynamics, Finite element analysis, Fluid-dynamic forces, Gaussian distribution, Vibration

Proceedings Papers

Forced Response Variation of Aerodynamically and Structurally Mistuned Turbo-Machinery Rotors

I. Sladojevic´, E. P. Petrov, M. Imregun, A. I. Sayma

Proc. ASME. GT2006, Volume 5: Marine; Microturbines and Small Turbomachinery; Oil and Gas Applications; Structures and Dynamics, Parts A and B, 961-971, May 8–11, 2006

Paper No: GT2006-90948

DOI: https://doi.org/10.1115/GT2006-90948

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Topics: Aircraft engines, Annulus, Blades, Damping, Disks, Elasticity, Finite element model, Flutter (Aerodynamics), Rotors, Turbomachinery

Proceedings Papers

Unsteady Flow and Aeroelasticity Behaviour of Aero-Engine Core Compressors During Rotating Stall and Surge

M. Vahdati, G. Simpson, M. Imregun

Proc. ASME. GT2006, Volume 6: Turbomachinery, Parts A and B, 153-163, May 8–11, 2006

Paper No: GT2006-90308

DOI: https://doi.org/10.1115/GT2006-90308

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Topics: Aeroelasticity, Aircraft engines, Compressors, Surges, Unsteady flow, Flow (Dynamics), Engines, Pressure, Annulus, Blades

Journal Articles

Unsteady Flow and Aeroelasticity Behavior of Aeroengine Core Compressors During Rotating Stall and Surge

M. Vahdati, G. Simpson, M. Imregun

J. Turbomach. July 2008, 130(3): 031017.

DOI: https://doi.org/10.1115/1.2777188

Published Online: May 6, 2008

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Topics: Blades, Compressors, Flow (Dynamics), Pressure, Rotors, Surges, Unsteady flow, Engines, Annulus, Steady state

Journal Articles

Multibladerow Forced Response Modeling in Axial-Flow Core Compressors

M. Vahdati, A. I. Sayma, M. Imregun, G. Simpson

J. Turbomach. April 2007, 129(2): 412–420.

DOI: https://doi.org/10.1115/1.2436892

Published Online: June 3, 2005

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Topics: Blades, Compressors, Computation, Excitation, Flow (Dynamics), Vibration, Damping, Engines, Stators, Modeling

Journal Articles

On the Use of Atmospheric Boundary Conditions for Axial-Flow Compressor Stall Simulations

M. Vahdati, A. I. Sayma, C. Freeman, M. Imregun

J. Turbomach. April 2005, 127(2): 349–351.

DOI: https://doi.org/10.1115/1.1861912

Published Online: August 27, 2004

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Topics: Axial flow, Blades, Boundary-value problems, Compressors, Nozzles, Simulation, Computational fluid dynamics, Flow (Dynamics), Pressure

Journal citation

NARROW

An Analysis of the Aeroelastic Behaviour of a Typical Fan-Blade With Emphasis on the Flutter Mechanism

A Review of Analysis Techniques for Blade Tip-Timing Measurements

Predicted Influence of Intake Acoustics Upon Part-Speed Fan Flutter

A Resonance Tracking Algorithm for the Prediction of Turbine Forced Response With Friction Dampers

An Integrated Time-Domain Aeroelasticity Model for the Prediction of Fan Forced Response Due to Inlet Distortion

Aerodynamics and Aeroelasticity of Impeller Vane Interactions in a High Pressure Ratio Centrifugal Compressor

Thermoelastic Modeling of Rotor Response With Shaft Rub

A Numerical Study of Labyrinth Seal Flutter

Numerical Investigation of Labyrinth Seal Aeroelastic Stability

Parameters Identification for Nonlinear Dynamic Systems Via Genetic Algorithm Optimization

Forced Response Assessment Using Modal Force Based Indicator Functions

Analysis of Low-Pressure Turbine Flutter for Different Shroud Interfaces

Influence of Stagger Angle Variation on Aerodynamic Damping and Frequency Shifts

A Numerical Investigation of Aeroacoustic Fan Blade Flutter

Investigation of the Influence of Aerodynamic Coupling on Response Levels of Mistuned Bladed Discs With Weak Structural Coupling

Forced Response Variation of Aerodynamically and Structurally Mistuned Turbo-Machinery Rotors

Unsteady Flow and Aeroelasticity Behaviour of Aero-Engine Core Compressors During Rotating Stall and Surge

Unsteady Flow and Aeroelasticity Behavior of Aeroengine Core Compressors During Rotating Stall and Surge

Multibladerow Forced Response Modeling in Axial-Flow Core Compressors

On the Use of Atmospheric Boundary Conditions for Axial-Flow Compressor Stall Simulations

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