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Juan Manuel Gallardo
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Journal Articles

Numerical Study of Low Engine Order Excitations Due to Manufacturing Variability Part II: An Efficient Approach for Stochastic Studies

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Juan Manuel Gallardo, Óscar Pérez Escobar
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2025, 147(6): 061004.
Paper No: GTP-24-1508
https://doi.org/10.1115/1.4066538
Published Online: November 14, 2024
View Articletitled, Numerical Study of Low Engine Order Excitations Due to Manufacturing Variability Part II: An Efficient Approach for Stochastic Studies
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Topics: Airfoils, Blades, Computational fluid dynamics, Electromagnetic scattering, Engines, Excitation, Flow (Dynamics), Geometry, Manufacturing, Simulation
Journal Articles

Numerical Study of Low Engine Order Excitations Due to Manufacturing Variability Part I: Characterization of the Geometric Scatter and Its Effect on Forced Response

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Óscar Pérez Escobar, Vicente Timón, Juan Manuel Gallardo
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2025, 147(6): 061003.
Paper No: GTP-24-1524
https://doi.org/10.1115/1.4066585
Published Online: November 14, 2024
View Articletitled, Numerical Study of Low Engine Order Excitations Due to Manufacturing Variability Part I: Characterization of the Geometric Scatter and Its Effect on Forced Response
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Topics: Airfoils, Electromagnetic scattering, Engines, Geometry, Manufacturing, Vibration, Rotors, Excitation, Design, Blades
Proceedings Papers

Numerical Study of Low Engine Order Excitations due to Manufacturing Variability Part 2: An Efficient Approach for Stochastic Studies

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Juan Manuel Gallardo, Óscar Pérez Escobar
Proc. ASME. GT2024, Volume 10A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing, V10AT21A010, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126570
https://doi.org/10.1115/GT2024-126570
View Paper titled, Numerical Study of Low Engine Order Excitations due to Manufacturing Variability Part 2: An Efficient Approach for Stochastic Studies
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Topics: Engines, Excitation, Geometry, Manufacturing, Electromagnetic scattering, Flow (Dynamics), Engineering simulation, Simulation, Airfoils, Blades
Proceedings Papers

Numerical Study of Low Engine Order Excitations due to Manufacturing Variability Part 1: Characterization of the Geometric Scatter and its Effect on Forced Response

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Óscar Pérez Escobar, Vicente Timón, Juan Manuel Gallardo
Proc. ASME. GT2024, Volume 10A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing, V10AT21A011, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126586
https://doi.org/10.1115/GT2024-126586
View Paper titled, Numerical Study of Low Engine Order Excitations due to Manufacturing Variability Part 1: Characterization of the Geometric Scatter and its Effect on Forced Response
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Topics: Electromagnetic scattering, Engines, Excitation, Geometry, Manufacturing, Airfoils, Aerodynamics, Blades, Aeroelasticity, Computational fluid dynamics
Journal Articles

Experimental Research Into Aeroelastic Phenomena in Turbine Rotor Blades Inside ARIAS EU Project

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Juan Manuel Gallardo, Oscar Bermejo, Julen Hernández, Gadea García, Jon Gallego, Daniel Knappett, Vsevolod Kharyton, Mike Wurl, Roque Corral
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2024, 146(7): 071009.
Paper No: TURBO-23-1308
https://doi.org/10.1115/1.4065621
Published Online: June 10, 2024
View Articletitled, Experimental Research Into Aeroelastic Phenomena in Turbine Rotor Blades Inside ARIAS EU Project
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Topics: Blades, Dampers, Design, Flutter (Aerodynamics), Rotors, Turbines, Vibration, Signals, Pressure, Excitation
Journal Articles

A Conceptual Model for the Flutter Mechanism in Interlocked Turbine Blades

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Juan Manuel Gallardo, Óscar Pérez Escobar
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2023, 145(11): 111015.
Paper No: GTP-23-1314
https://doi.org/10.1115/1.4063313
Published Online: September 29, 2023
View Articletitled, A Conceptual Model for the Flutter Mechanism in Interlocked Turbine Blades
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Topics: Blades, Flutter (Aerodynamics), Torsion, Finite element methods, Damping, Stability, Mode shapes, Turbines
Proceedings Papers

Analytical, Numerical and Experimental Study of Flutter in a Realistic Labyrinth Seal

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Oscar Bermejo, Juan Manuel Gallardo, Adrian Sotillo, Arnau Altuna, Roberto Alonso, Andoni Puente
Proc. ASME. GT2023, Volume 13C: Turbomachinery — Deposition, Erosion, Fouling, and Icing; Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V13CT32A016, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101907
https://doi.org/10.1115/GT2023-101907
View Paper titled, Analytical, Numerical and Experimental Study of Flutter in a Realistic Labyrinth Seal
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Topics: Flutter (Aerodynamics)
Proceedings Papers

A Conceptual Model for the Flutter Mechanism in Interlocked Turbine Blades

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Juan Manuel Gallardo, Óscar Pérez Escobar
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT21A004, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101677
https://doi.org/10.1115/GT2023-101677
View Paper titled, A Conceptual Model for the Flutter Mechanism in Interlocked Turbine Blades
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Topics: Flutter (Aerodynamics), Turbine blades
Journal Articles

Study of the Effect of the Scatter of Acoustic Modes on Turbine Flutter

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Juan Manuel Gallardo, Adrián Sotillo, Óscar Bermejo
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2019, 141(10): 101010.
Paper No: TURBO-18-1306
https://doi.org/10.1115/1.4043909
Published Online: September 30, 2019
View Articletitled, Study of the Effect of the Scatter of Acoustic Modes on Turbine Flutter
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Topics: Acoustics, Flutter (Aerodynamics), Waves, Simulation, Reflection, Electromagnetic scattering, Turbines
Proceedings Papers

Study of the Impact of Multi-Row Interaction on Flutter Analysis for a Representative LPT Geometry

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Adrian Sotillo, Juan Manuel Gallardo
Proc. ASME. GT2018, Volume 7C: Structures and Dynamics, V07CT36A011, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75762
https://doi.org/10.1115/GT2018-75762
View Paper titled, Study of the Impact of Multi-Row Interaction on Flutter Analysis for a Representative LPT Geometry
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Topics: Flutter (Aerodynamics), Geometry, Blades, Acoustics, Spin (Aerodynamics), Spinning (Textile), Computation, Computational fluid dynamics, Damping, Engineering simulation
Proceedings Papers

Conceptual Analysis of the Non-Linear Forced Response of Aerodynamically Unstable Bladed-Discs

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Roque Corral, Juan Manuel Gallardo, Rahul Ivaturi
Proc. ASME. GT2013, Volume 7A: Structures and Dynamics, V07AT32A001, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-94851
https://doi.org/10.1115/GT2013-94851
View Paper titled, Conceptual Analysis of the Non-Linear Forced Response of Aerodynamically Unstable Bladed-Discs
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Topics: Disks, Excitation, Friction, Vibration, Flutter (Aerodynamics), Blades, Energy dissipation, Engines, Limit cycles, Springs
Proceedings Papers

Non-Linear Dynamics of Multi-Mode Unstable Bladed-Disks: Part I—Description of a Canonical Model and Phenomenological Results

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Roque Corral, Juan Manuel Gallardo
Proc. ASME. GT2011, Volume 6: Structures and Dynamics, Parts A and B, 1331-1341, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-45983
https://doi.org/10.1115/GT2011-45983
View Paper titled, Non-Linear Dynamics of Multi-Mode Unstable Bladed-Disks: Part I—Description of a Canonical Model and Phenomenological Results
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Topics: Disks, Nonlinear dynamics, Dynamics (Mechanics), Blades, Rotors, Airfoils, Dry friction, Pressure, Steady state, Traveling waves
Proceedings Papers

Verification of the Vibration Amplitude Prediction of Self-Excited LPT Rotor Blades Using a Fully Coupled Time-Domain Non-Linear Method and Experimental Data

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Roque Corral, Juan Manuel Gallardo
Proc. ASME. GT2008, Volume 5: Structures and Dynamics, Parts A and B, 835-847, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-51416
https://doi.org/10.1115/GT2008-51416
View Paper titled, Verification of the Vibration Amplitude Prediction of Self-Excited LPT Rotor Blades Using a Fully Coupled Time-Domain Non-Linear Method and Experimental Data
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Topics: Blades, Rotors, Vibration, Airfoils, Disks, Dry friction, Pressure, Turbines, Aerodynamics, Energy budget (Physics)
Proceedings Papers

A Conceptual Flutter Analysis of a Packet of Vanes Using a Mass-Spring Model

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Roque Corral, Juan Manuel Gallardo, Carlos Martel
Proc. ASME. GT2007, Volume 5: Turbo Expo 2007, 599-607, May 14–17, 2007
Publisher: American Society of Mechanical Engineers
Paper No: GT2007-27090
https://doi.org/10.1115/GT2007-27090
View Paper titled, A Conceptual Flutter Analysis of a Packet of Vanes Using a Mass-Spring Model
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Topics: Flutter (Aerodynamics), Springs, Mode shapes, Aerodynamics, Airfoils, Damping, Fluid-dynamic forces, Stiffness, Approximation, Dynamics (Mechanics)
Journal Articles

A Conceptual Flutter Analysis of a Packet of Vanes Using a Mass-Spring Model

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Roque Corral, Juan Manuel Gallardo, Carlos Martel
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2009, 131(2): 021016.
https://doi.org/10.1115/1.2952364
Published Online: January 29, 2009
View Articletitled, A Conceptual Flutter Analysis of a Packet of Vanes Using a Mass-Spring Model
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Topics: Aerodynamics, Damping, Flutter (Aerodynamics), Springs, Stators
Proceedings Papers

Linear Stability Analysis of LPT Rotor Packets: Part II — Three-Dimensional Results and Mistuning Effects

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Roque Corral, Juan Manuel Gallardo, Carlos Vasco
Proc. ASME. GT2004, Volume 6: Turbo Expo 2004, 563-572, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-54120
https://doi.org/10.1115/GT2004-54120
View Paper titled, Linear Stability Analysis of LPT Rotor Packets: Part II — Three-Dimensional Results and Mistuning Effects
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Topics: Rotors, Stability, Disks, Damping, Airfoils, Accounting, Blades, Cantilevers, Design, Flutter (Aerodynamics)
Proceedings Papers

A Methodology for the Vibration Amplitude Prediction of Self-Excited Rotors Based on Dimensional Analysis

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Roque Corral, Juan Manuel Gallardo
Proc. ASME. GT2006, Volume 5: Marine; Microturbines and Small Turbomachinery; Oil and Gas Applications; Structures and Dynamics, Parts A and B, 1101-1113, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90668
https://doi.org/10.1115/GT2006-90668
View Paper titled, A Methodology for the Vibration Amplitude Prediction of Self-Excited Rotors Based on Dimensional Analysis
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Topics: Dimensional analysis, Rotors, Vibration, Blades, Airfoils, Aerodynamics, Disks, Dry friction, Excitation, Friction
Journal Articles

Aeroelastic Stability of Welded-in-Pair Low Pressure Turbine Rotor Blades: A Comparative Study Using Linear Methods

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Roque Corral, Juan Manuel Gallardo, Carlos Vasco
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. January 2007, 129(1): 72–83.
https://doi.org/10.1115/1.2366512
Published Online: March 1, 2004
View Articletitled, Aeroelastic Stability of Welded-in-Pair Low Pressure Turbine Rotor Blades: A Comparative Study Using Linear Methods
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Topics: Airfoils, Blades, Damping, Disks, Pressure, Rotors, Stability, Flutter (Aerodynamics), Turbines, Torsion