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Journal Articles

Experimental Validation of a Seal Flutter Model

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 Article titled, 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

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

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

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 Article titled, 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

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 Article titled, Nonlinear Flutter Analysis of Labyrinth Seals
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Topics: Cavities, Clearances (Engineering), Cycles, Flutter (Aerodynamics), Pressure, Stability, Vibration, Flow (Dynamics), Torsion
Journal Articles

Low Reduced Frequency Theory of Airfoils Vibrating in Complex Modes

Roque Corral, Yago Blando, Aitor Pitarch
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2023, 145(4): 041020.
Paper No: GTP-22-1575
https://doi.org/10.1115/1.4056102
Published Online: December 13, 2022
View Article titled, Low Reduced Frequency Theory of Airfoils Vibrating in Complex Modes
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Topics: Airfoils, Cycles, Pressure, Torsion, Damping, Mode shapes
Proceedings Papers

Validation of Broadband Noise Prediction Methodology Based on Linearised Navier-Stokes Analyses

Ricardo Blazquez-Navarro, Roque Corral
Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT33A020, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-84013
https://doi.org/10.1115/GT2022-84013
View Paper titled, Validation of Broadband Noise Prediction Methodology Based on Linearised Navier-Stokes Analyses
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Topics: Noise (Sound), Reynolds-averaged Navier–Stokes equations, Turbulence
Proceedings Papers

Low Reduced Frequency Theory of Airfoils Vibrating in Complex Modes

Roque Corral, Yago Blando, Aitor Pitarch
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT21A020, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82704
https://doi.org/10.1115/GT2022-82704
View Paper titled, Low Reduced Frequency Theory of Airfoils Vibrating in Complex Modes
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Topics: Airfoils, Cycles, Blades, Acoustics, Aerodynamics, Mode shapes, Navier-Stokes equations, Pressure, Resonance, Stability
Proceedings Papers

Non-Linear Flutter Analysis of Labyrinth Seals

Roque Corral, Michele Greco, Luis Matabuena
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT21A014, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82142
https://doi.org/10.1115/GT2022-82142
View Paper titled, Non-Linear Flutter Analysis of Labyrinth Seals
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Topics: Flutter (Aerodynamics), Vibration, Stability, Clearances (Engineering), Cycles, High pressure (Physics), Momentum, Pressure
Journal Articles

Effective Clearance and Differential Gapping Impact on Seal Flutter Modeling and Validation

Roque Corral, Michele Greco, Almudena Vega
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2022, 144(7): 071010.
Paper No: TURBO-21-1238
https://doi.org/10.1115/1.4053290
Published Online: March 2, 2022
View Article titled, Effective Clearance and Differential Gapping Impact on Seal Flutter Modeling and Validation
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Topics: Cavities, Kinetic energy, Pressure, Stability, Clearances (Engineering), Simulation, Flutter (Aerodynamics), Flow (Dynamics), Discharge coefficient, Computational fluid dynamics
Proceedings Papers

Effective Clearance And Differential Gapping Impact on Seal Flutter Modelling and Validation

Roque Corral, Michele Greco, Almudena Vega
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT23A006, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58846
https://doi.org/10.1115/GT2021-58846
View Paper titled, Effective Clearance And Differential Gapping Impact on Seal Flutter Modelling and Validation
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Topics: Clearances (Engineering), Flutter (Aerodynamics), Modeling, Stability, Accounting, Cavities, Computer simulation, Engineering simulation, Kinetic energy, Navier-Stokes equations
Journal Articles

Higher Order Conceptual Model for Labyrinth Seal Flutter

Roque Corral, Michele Greco, Almudena Vega
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2021, 143(7): 071006.
Paper No: TURBO-20-1261
https://doi.org/10.1115/1.4050334
Published Online: April 9, 2021
View Article titled, Higher Order Conceptual Model for Labyrinth Seal Flutter
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Topics: Cavities, Computational fluid dynamics, Cycles, Flow (Dynamics), Flutter (Aerodynamics), Pressure, Stability, Torsion, Simulation, Vibration
Journal Articles

Nonlinear Stability Analysis of a Generic Fan With Distorted Inflow Using Passage-Spectral Method

David Romera, Roque Corral
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. June 2021, 143(6): 061001.
Paper No: TURBO-20-1296
https://doi.org/10.1115/1.4050144
Published Online: April 7, 2021
View Article titled, Nonlinear Stability Analysis of a Generic Fan With Distorted Inflow Using Passage-Spectral Method
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Topics: Stability, Pressure, Simulation, Annulus, Flow (Dynamics), Rotors, Blades
Journal Articles

Numerical and Experimental Investigation of the Reynolds Number and Reduced Frequency Effects on Low-Pressure Turbine Airfoils

M. Bolinches-Gisbert, David Cadrecha Robles, Roque Corral, Fernando Gisbert
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. February 2021, 143(2): 021004.
Paper No: TURBO-20-1230
https://doi.org/10.1115/1.4049612
Published Online: February 1, 2021
View Article titled, Numerical and Experimental Investigation of the Reynolds Number and Reduced Frequency Effects on Low-Pressure Turbine Airfoils
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Topics: Airfoils, Boundary layers, Cascades (Fluid dynamics), Flow (Dynamics), Pressure, Reynolds number, Turbines, Turbulence, Wakes, Bubbles
Proceedings Papers

Higher-Order Conceptual Model for Labyrinth Seal Flutter

Roque Corral, Michele Greco, Almudena Vega
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT24A003, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14387
https://doi.org/10.1115/GT2020-14387
View Paper titled, Higher-Order Conceptual Model for Labyrinth Seal Flutter
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Topics: Flutter (Aerodynamics), Cavities, Flow (Dynamics), High pressure (Physics), Cycles, Design, Engineering simulation, Simulation, Stability, Torsion
Proceedings Papers

Nonlinear Stability Analysis of a Generic Fan With Distorted Inflow Using Passage-Spectral Method

David Romera, Roque Corral
Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A038, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14948
https://doi.org/10.1115/GT2020-14948
View Paper titled, Nonlinear Stability Analysis of a Generic Fan With Distorted Inflow Using Passage-Spectral Method
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Topics: Inflow, Stability, Pressure, Annulus, Simulation, Approximation, NASA, Rotors, Blades, Compressors
Proceedings Papers

Numerical and Experimental Investigation of the Reynolds Number and Reduced Frequency Effects on Low-Pressure Turbine Airfoils

Marc Bolinches-Gisbert, David Cadrecha, Roque Corral, Fernando Gisbert
Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET41A003, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14224
https://doi.org/10.1115/GT2020-14224
View Paper titled, Numerical and Experimental Investigation of the Reynolds Number and Reduced Frequency Effects on Low-Pressure Turbine Airfoils
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Topics: Airfoils, Pressure, Reynolds number, Turbines, Cascades (Fluid dynamics), Unsteady flow, Boundary layers, Graphics processing units, Runge-Kutta methods, Shear (Mechanics)
Proceedings Papers

Incompatible Boundary Conditions in Heat Equation Coupled With Air System Models

Jose M. Chaquet, Roque Corral
Proc. ASME. GT2020, Volume 7C: Heat Transfer, V07CT14A001, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14011
https://doi.org/10.1115/GT2020-14011
View Paper titled, Incompatible Boundary Conditions in Heat Equation Coupled With Air System Models
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Topics: Boundary-value problems, Heat, Fluids, Temperature, Air flow, Design, Engineering simulation, Flow (Dynamics), Heat transfer, Melting point
Journal Articles

Efficient Passage-Spectral Method For Unsteady Flows Under Stall Conditions

David Romera, Roque Corral
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. December 2020, 142(12): 121007.
Paper No: TURBO-19-1176
https://doi.org/10.1115/1.4047934
Published Online: November 16, 2020
View Article titled, Efficient Passage-Spectral Method For Unsteady Flows Under Stall Conditions
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Topics: Annulus, Blades, Flow (Dynamics), Pressure, Rotors, Simulation, Unsteady flow, Compressors, Stall inception, NASA
Journal Articles

Conceptual Flutter Analysis of Stepped Labyrinth Seals

Roque Corral, Almudena Vega, Michele Greco
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2020, 142(7): 071001.
Paper No: GTP-19-1745
https://doi.org/10.1115/1.4046419
Published Online: June 12, 2020
View Article titled, Conceptual Flutter Analysis of Stepped Labyrinth Seals
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Topics: Cavities, Cycles, Flutter (Aerodynamics), Pressure, Stability, Torsion