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Journal Articles

A New Nonlinear Time-Domain Flutter Analysis Approach for Distorted Flows

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Roque Corral, Salvador Rodríguez-Blanco, Venkata Y. T. Chennuru, Mehdi Vahdati, Fanzhou Zhao
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2025, 147(7): 071014.
Paper No: TURBO-24-1249
https://doi.org/10.1115/1.4067245
Published Online: December 17, 2024
View Articletitled, A New Nonlinear Time-Domain Flutter Analysis Approach for Distorted Flows
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Topics: Blades, Damping, Flow (Dynamics), Flutter (Aerodynamics), Simulation, Vibration, Pressure, Stability
Journal Articles

Scale-Resolving Simulations of Turbulent Flow Retaining the Exact Blade Count With the Time-Inclined Method

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Miguel Montiel, Roque Corral
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2025, 147(3): 031013.
Paper No: TURBO-24-1276
https://doi.org/10.1115/1.4067247
Published Online: December 17, 2024
View Articletitled, Scale-Resolving Simulations of Turbulent Flow Retaining the Exact Blade Count With the Time-Inclined Method
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Topics: Blades, Cascades (Fluid dynamics), Engineering simulation, Flow (Dynamics), Pressure, Simulation, Turbulence, Wakes, Inflow, Modeling
Journal Articles

Validation of a Methodology to Assess the Flutter Limit Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part II: Rotational Speed Effects

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Alvaro Escudero, Salvador Rodríguez-Blanco, Roque Corral
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2025, 147(6): 061002.
Paper No: GTP-24-1534
https://doi.org/10.1115/1.4066584
Published Online: November 14, 2024
View Articletitled, Validation of a Methodology to Assess the Flutter Limit Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part II: Rotational Speed Effects
Open the PDF for Validation of a Methodology to Assess the Flutter Limit Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part II: Rotational Speed Effects in another window
Topics: Blades, Flutter (Aerodynamics), Pressure, Rotors, Vibration, Damping, Turbines, Friction, Mach number, Bladed disks
Journal Articles

Validation of a Methodology to Assess the Flutter Limit-Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part I: Mach Number Effects

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Alvaro Escudero, Salvador Rodríguez-Blanco, Roque Corral
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2025, 147(6): 061001.
Paper No: GTP-24-1526
https://doi.org/10.1115/1.4066587
Published Online: November 14, 2024
View Articletitled, Validation of a Methodology to Assess the Flutter Limit-Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part I: Mach Number Effects
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Topics: Blades, Flutter (Aerodynamics), Mach number, Pressure, Rotors, Vibration, Cycles, Damping, Design, Turbines
Journal Articles

Fan Non-Synchronous Forced Vibration Under Crosswind

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Venkata Y. T. Chennuru, Roque Corral, Salvador Rodríguez-Blanco, Mehdi Vahdati, Fanzhou Zhao
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2025, 147(5): 051005.
Paper No: TURBO-24-1256
https://doi.org/10.1115/1.4066915
Published Online: November 12, 2024
View Articletitled, Fan Non-Synchronous Forced Vibration Under Crosswind
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Topics: Blades, Flow (Dynamics), Separation (Technology), Vibration, Excitation, Signals, Pressure, Rotors, Computational fluid dynamics
Journal Articles

Conceptual Analysis on the Impact of Acoustic Liners in Fan Flutter

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Javier González-Monge, José Miguel Pérez, Roque Corral, Fanzhou Zhao, Mehdi Vahdati
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2025, 147(4): 041001.
Paper No: TURBO-24-1272
https://doi.org/10.1115/1.4066740
Published Online: October 25, 2024
View Articletitled, Conceptual Analysis on the Impact of Acoustic Liners in Fan Flutter
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Topics: Acoustics, Flutter (Aerodynamics), Waves, Ducts, Reflection, Stability
Proceedings Papers

Conceptual Analysis on the Impact of Acoustic Liners in Fan Flutter

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Javier González-Monge, José Miguel Pérez, Roque Corral, Fanzhou Zhao, Mehdi Vahdati
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, V10AT21A022, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129249
https://doi.org/10.1115/GT2024-129249
View Paper titled, Conceptual Analysis on the Impact of Acoustic Liners in Fan Flutter
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Topics: Acoustics, Flutter (Aerodynamics), Waves, Reflection, Axial flow, Blades, Ducts, Electromagnetic scattering, Radiation scattering, Scattering (Physics)
Proceedings Papers

Validation of a Methodology to Assess the Flutter Limit Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed-Disks - Part I: Mach Number Effects

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Alvaro Escudero, Salvador Rodríguez-Blanco, Roque Corral
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, V10AT21A017, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129074
https://doi.org/10.1115/GT2024-129074
View Paper titled, Validation of a Methodology to Assess the Flutter Limit Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed-Disks - Part I: Mach Number Effects
Open the PDF for Validation of a Methodology to Assess the Flutter Limit Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed-Disks - Part I: Mach Number Effects in another window
Topics: Bladed disks, Flutter (Aerodynamics), Limit cycles, Mach number, Oscillations, Pressure, Turbines, Damping, Vibration, Blades
Proceedings Papers

Validation of a Methodology to Assess the Flutter Limit Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed-Disks - Part II: Shaft Speed Effects

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Alvaro Escudero, Salvador Rodríguez-Blanco, Roque Corral
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, V10AT21A018, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129134
https://doi.org/10.1115/GT2024-129134
View Paper titled, Validation of a Methodology to Assess the Flutter Limit Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed-Disks - Part II: Shaft Speed Effects
Open the PDF for Validation of a Methodology to Assess the Flutter Limit Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed-Disks - Part II: Shaft Speed Effects in another window
Topics: Bladed disks, Flutter (Aerodynamics), Limit cycles, Oscillations, Pressure, Turbines, Vibration, Dry friction, Friction, Aerodynamics
Proceedings Papers

Fan Non-Synchronous Forced Vibration Under Crosswind

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Venkata Y. T. Chennuru, Roque Corral García, Salvador Rodríguez-Blanco, Mehdi Vahdati, Fanzhou Zhao
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, V10AT21A008, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126523
https://doi.org/10.1115/GT2024-126523
View Paper titled, Fan Non-Synchronous Forced Vibration Under Crosswind
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Topics: Separation (Technology), Vibration
Proceedings Papers

Parametric Study on the Duct Intake Reflection Coefficients for Fan Flutter Analyses

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Jose Miguel Perez, Roque Corral
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, V10AT21A019, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129159
https://doi.org/10.1115/GT2024-129159
View Paper titled, Parametric Study on the Duct Intake Reflection Coefficients for Fan Flutter Analyses
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Topics: Ducts, Flutter (Aerodynamics), Reflectance, Acoustics, Waves, Aircraft engines, Reflection, Mach number, Noise (Sound), Vibration
Proceedings Papers

A New Non-Linear Time-Domain Flutter Analysis Approach for Distorted Flows

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Roque Corral, Salvador Rodríguez-Blanco, Venkata Y. T. Chennuru, Mehdi Vahdati, Fanzhou Zhao
Proc. ASME. GT2024, Volume 12C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V12CT32A056, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129404
https://doi.org/10.1115/GT2024-129404
View Paper titled, A New Non-Linear Time-Domain Flutter Analysis Approach for Distorted Flows
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Topics: Flow (Dynamics), Flutter (Aerodynamics), Damping, Blades, Computational fluid dynamics, Computation, Computer simulation, Electromagnetic scattering, Manufacturing, Pressure
Proceedings Papers

Scale-Resolving Simulations of Turbulent Flow Retaining The Exact Blade Count With the Time-Inclined Method

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Miguel Montiel, Roque Corral
Proc. ASME. GT2024, Volume 12C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V12CT32A025, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125689
https://doi.org/10.1115/GT2024-125689
View Paper titled, Scale-Resolving Simulations of Turbulent Flow Retaining The Exact Blade Count With the Time-Inclined Method
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Topics: Blades, Engineering simulation, Simulation, Turbulence, Wakes, Cascades (Fluid dynamics), Modeling, Pressure, Turbines
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

Block Spectral Method Analysis for Turbomachinery Applications

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Roque Corral, David Romera, Miguel Montiel
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2024, 146(7): 071007.
Paper No: TURBO-23-1206
https://doi.org/10.1115/1.4065411
Published Online: May 23, 2024
View Articletitled, Block Spectral Method Analysis for Turbomachinery Applications
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Topics: Annulus, Blades, Flow (Dynamics), Simulation, Turbomachinery, Wave equations, Wavelength, Rotors, Fourier transforms
Journal Articles

Experimental Validation of a Seal Flutter Model

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Roque Corral, Michele Greco
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. December 2023, 145(12): 121010.
Paper No: TURBO-23-1174
https://doi.org/10.1115/1.4063514
Published Online: October 19, 2023
View Articletitled, Experimental Validation of a Seal Flutter Model
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Topics: Cavities, Computational fluid dynamics, Engineering simulation, Flutter (Aerodynamics), Pressure, Simulation, Stability, Flow (Dynamics), Kinetic energy, Damping
Proceedings Papers

Experimental Validation of a Seal Flutter Model

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Roque Corral, Michele Greco
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT21A011, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102600
https://doi.org/10.1115/GT2023-102600
View Paper titled, Experimental Validation of a Seal Flutter Model
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Topics: Flutter (Aerodynamics), Engineering simulation, Pressure, Simulation, Cavities, Centrifugal force, Clearances (Engineering), Computer simulation, Deformation, Flow (Dynamics)
Proceedings Papers

Adapting Artificial Neural Networks Training Algorithms to Adjoint-Based Aerodynamic Shape Optimization

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Fernando Gisbert, David Cadrecha, Jaime Quintanal, Adrián Sotillo, Jesús Pueblas, Aida Serrano, Ricardo Puente, Roque Corral
Proc. ASME. GT2023, Volume 13D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V13DT34A021, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103906
https://doi.org/10.1115/GT2023-103906
View Paper titled, Adapting Artificial Neural Networks Training Algorithms to Adjoint-Based Aerodynamic Shape Optimization
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Topics: Algorithms, Artificial neural networks, Shape optimization, Design, Pressure, Blades, Computation, Artificial intelligence, Columns (Structural), Construction
Journal Articles

Validation of Broadband Noise Prediction Methodology Based on Linearized Navier–Stokes Analyses

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Ricardo Blázquez-Navarro, Roque Corral
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. September 2023, 145(9): 091002.
Paper No: TURBO-22-1309
https://doi.org/10.1115/1.4062398
Published Online: May 22, 2023
View Articletitled, Validation of Broadband Noise Prediction Methodology Based on Linearized Navier–Stokes Analyses
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Topics: Noise (Sound), Reynolds-averaged Navier–Stokes equations, Turbulence, Wakes, Simulation, Spectra (Spectroscopy)
Journal Articles

Nonlinear Flutter Analysis of Labyrinth Seals

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Roque Corral, Michele Greco, Luis Matabuena
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2023, 145(7): 071007.
Paper No: TURBO-22-1326
https://doi.org/10.1115/1.4056701
Published Online: February 10, 2023
View Articletitled, Nonlinear Flutter Analysis of Labyrinth Seals
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Topics: Cavities, Clearances (Engineering), Cycles, Flutter (Aerodynamics), Pressure, Stability, Vibration, Flow (Dynamics), Torsion