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Journal Articles

Noise Source Identification for the Unsteady Low-Pressure Turbine Flow Fields

Lanyi Yan, Daniele Simoni, Yigang Luan, Tao Sun, Dario Barsi, Pietro Zunino
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2025, 147(5): 051007.
Paper No: TURBO-24-1127
https://doi.org/10.1115/1.4066917
Published Online: November 12, 2024
View Article titled, Noise Source Identification for the Unsteady Low-Pressure Turbine Flow Fields
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Topics: Flow (Dynamics), Noise (Sound), Pressure, Rotors, Stators, Turbines, Turbulence, Principal component analysis, Blades
Proceedings Papers

Noise Source Identification for the Unsteady Low Pressure Turbine Flow Fields

Lanyi Yan, Daniele Simoni, Yigang Luan, Tao Sun, Dario Barsi, Pietro Zunino
Proc. ASME. GT2024, Volume 12D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V12DT36A003, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-122178
https://doi.org/10.1115/GT2024-122178
View Paper titled, Noise Source Identification for the Unsteady Low Pressure Turbine Flow Fields
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Topics: Flow (Dynamics), Noise (Sound), Pressure, Principal component analysis, Rotors, Stators, Turbines
Proceedings Papers

Numerical Investigation of Laidback Fan-Shaped Film Cooling Holes With Large Eddy Simulation

Lianfeng Yang, Francesca Satta, Dario Barsi, Pietro Zunino, Yigang Luan
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A045, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83961
https://doi.org/10.1115/GT2022-83961
View Paper titled, Numerical Investigation of Laidback Fan-Shaped Film Cooling Holes With Large Eddy Simulation
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Topics: Cooling, Film cooling, Large eddy simulation, Turbine blades
Proceedings Papers

Research on the Effects of Dimples and Protrusions on Flow and Heat Transfer in Matrix Cooling Channels in Turbine Blades

Yigang Luan, Lianfeng Yang, Yue Yin, Pietro Zunino
Proc. ASME. GT2019, Volume 5A: Heat Transfer, V05AT11A010, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90830
https://doi.org/10.1115/GT2019-90830
View Paper titled, Research on the Effects of Dimples and Protrusions on Flow and Heat Transfer in Matrix Cooling Channels in Turbine Blades
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Topics: Cooling, Flow (Dynamics), Gas turbines, Heat transfer, Turbine blades
Proceedings Papers

Aerodynamic Loading Distribution Effects on Off-Design Performance of Highly Loaded LP Turbine Cascades Under Steady and Unsteady Incoming Flows

Marco Berrino, Daniele Simoni, Marina Ubaldi, Pietro Zunino, Francesco Bertini
Proc. ASME. GT2016, Volume 2B: Turbomachinery, V02BT38A048, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57580
https://doi.org/10.1115/GT2016-57580
View Paper titled, Aerodynamic Loading Distribution Effects on Off-Design Performance of Highly Loaded LP Turbine Cascades Under Steady and Unsteady Incoming Flows
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Topics: Design, Flow (Dynamics), Turbines, Reynolds number, Boundary layers, Cascades (Fluid dynamics), Inflow, Robustness, Blades, Physics
Proceedings Papers

Analysis of a LPT Rotor Blade for a Geared Engine: Part II — Characterization of the Time-Varying Flow Field in a Single Stage Research Turbine

Daniele Infantino, Francesca Satta, Daniele Simoni, Marina Ubaldi, Pietro Zunino, Francesco Bertini
Proc. ASME. GT2016, Volume 2B: Turbomachinery, V02BT38A051, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57725
https://doi.org/10.1115/GT2016-57725
View Paper titled, Analysis of a LPT Rotor Blade for a Geared Engine: Part II — Characterization of the Time-Varying Flow Field in a Single Stage Research Turbine
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Topics: Blades, Engines, Flow (Dynamics), Rotors, Turbines, Stators, Wakes, Vortices, Arches, Design
Proceedings Papers

Multi-Disciplinary Optimization of a Centrifugal Compressor for Micro-Turbine Applications

Andrea Perrone, Luca Ratto, Gianluca Ricci, Francesca Satta, Pietro Zunino
Proc. ASME. GT2016, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T23A025, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57278
https://doi.org/10.1115/GT2016-57278
View Paper titled, Multi-Disciplinary Optimization of a Centrifugal Compressor for Micro-Turbine Applications
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Topics: Compressors, Optimization, Turbines, Computation, Computational fluid dynamics, Mechanical behavior, Reynolds-averaged Navier–Stokes equations, Aerodynamics, Blades, Cycles
Journal Articles

A Simplified Model Predicting the Kelvin–Helmholtz Instability Frequency for Laminar Separated Flows

Daniele Simoni, Marina Ubaldi, Pietro Zunino
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Technical Briefs
J. Turbomach. April 2016, 138(4): 044501.
Paper No: TURBO-15-1014
https://doi.org/10.1115/1.4032162
Published Online: December 29, 2015
View Article titled, A Simplified Model Predicting the Kelvin–Helmholtz Instability Frequency for Laminar Separated Flows
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Topics: Boundary layers, Flow (Dynamics), Pressure gradient, Reynolds number, Separation (Technology), Shear (Mechanics), Stability, Waves, Airfoils, Blades
Proceedings Papers

Radial Inflow Turbine Design Through Multi-Disciplinary Optimisation Technique

Dario Barsi, Andrea Perrone, Luca Ratto, Daniele Simoni, Pietro Zunino
Proc. ASME. GT2015, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T23A009, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42702
https://doi.org/10.1115/GT2015-42702
View Paper titled, Radial Inflow Turbine Design Through Multi-Disciplinary Optimisation Technique
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Topics: Design, Inflow, Optimization, Turbines, Finite element analysis, Blades, Computational fluid dynamics, Mesh generation, Aerodynamics, Artificial neural networks
Proceedings Papers

Phase-Locked Investigation of Secondary Flows Perturbed by Passing Wakes in a High-Lift LPT Turbine Cascade

Daniele Infantino, Francesca Satta, Daniele Simoni, Marina Ubaldi, Pietro Zunino, Francesco Bertini
Proc. ASME. GT2015, Volume 2C: Turbomachinery, V02CT44A008, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42480
https://doi.org/10.1115/GT2015-42480
View Paper titled, Phase-Locked Investigation of Secondary Flows Perturbed by Passing Wakes in a High-Lift LPT Turbine Cascade
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Topics: Cascades (Fluid dynamics), Flow (Dynamics), Turbines, Wakes, Turbulence, Vortices, Aerodynamics, Blades, Displacement, Pressure
Journal Articles

Off-Design Performance of a Highly Loaded Low Pressure Turbine Cascade Under Steady and Unsteady Incoming Flow Conditions

Daniele Simoni, Marco Berrino, Marina Ubaldi, Pietro Zunino, Francesco Bertini
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. July 2015, 137(7): 071009.
Paper No: TURBO-14-1280
https://doi.org/10.1115/1.4029200
Published Online: July 1, 2015
View Article titled, Off-Design Performance of a Highly Loaded Low Pressure Turbine Cascade Under Steady and Unsteady Incoming Flow Conditions
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Topics: Blades, Boundary layers, Cascades (Fluid dynamics), Design, Flow (Dynamics), Inflow, Pressure, Suction, Wakes, Turbulence
Proceedings Papers

Measurements of Secondary Flows and Turbulence in a Turbine Cascade Passage

Pietro Zunino, Marina Ubaldi, Antonio Satta
Proc. ASME. GT1987, Volume 1: Turbomachinery, V001T01A036, May 31–June 4, 1987
Publisher: American Society of Mechanical Engineers
Paper No: 87-GT-132
https://doi.org/10.1115/87-GT-132
View Paper titled, Measurements of Secondary Flows and Turbulence in a Turbine Cascade Passage
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Topics: Cascades (Fluid dynamics), Flow (Dynamics), Turbines, Turbulence, Kinetic energy, Blades, Energy dissipation, Pressure, Probes, Rotors
Proceedings Papers

A Comparison Between Measurements and Turbulence Models in a Turbine Cascade Passage

Pietro Zunino, Marina Ubaldi, Antonio Satta, Enrico Peisino
Proc. ASME. GT1988, Volume 1: Turbomachinery, V001T01A082, June 6–9, 1988
Publisher: American Society of Mechanical Engineers
Paper No: 88-GT-226
https://doi.org/10.1115/88-GT-226
View Paper titled, A Comparison Between Measurements and Turbulence Models in a Turbine Cascade Passage
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Topics: Cascades (Fluid dynamics), Turbines, Turbulence, Blades, Flow (Dynamics), Rotors, Stress
Proceedings Papers

Experimental Investigation of the Stalled Flow in a Centrifugal Pump-Turbine With Varied Diffuser

Marina Ubaldi, Pietro Zunino
Proc. ASME. GT1990, Volume 1: Turbomachinery, V001T01A069, June 11–14, 1990
Publisher: American Society of Mechanical Engineers
Paper No: 90-GT-216
https://doi.org/10.1115/90-GT-216
View Paper titled, Experimental Investigation of the Stalled Flow in a Centrifugal Pump-Turbine With Varied Diffuser
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Topics: Diffusers, Flow (Dynamics), Pump turbines, Pressure, Impellers, Pumps, Fourier transforms, Probes, Signals, Wire
Proceedings Papers

Combined Cycle Power Plant Thermo-Economic Multi-Objective Optimization Using Evolutionary Algorithm

Roberto Canepa, Giulio Croce, Pietro Zunino
Proc. ASME. IMECE2014, Volume 6B: Energy, V06BT07A058, November 14–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2014-37815
https://doi.org/10.1115/IMECE2014-37815
View Paper titled, Combined Cycle Power Plant Thermo-Economic Multi-Objective Optimization Using Evolutionary Algorithm
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Topics: Combined cycle power stations, Evolutionary algorithms, Pareto optimization, Thermoeconomics, Modeling, Optimization, Design, Heat recovery steam generators, Power stations, Pressure
Proceedings Papers

Relative Flow and Turbulence Measurements Downstream of a Backward Centrifugal Impeller

Marina Ubaldi, Pietro Zunino, Andrea Cattanei
Proc. ASME. GT1992, Volume 1: Turbomachinery, V001T01A073, June 1–4, 1992
Publisher: American Society of Mechanical Engineers
Paper No: 92-GT-212
https://doi.org/10.1115/92-GT-212
View Paper titled, Relative Flow and Turbulence Measurements Downstream of a Backward Centrifugal Impeller
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Topics: Flow (Dynamics), Impellers, Turbulence, Pressure, Wakes, Blades, High pressure (Physics), Kinematics, Pressure transducers, Probes
Proceedings Papers

Turbulence Measurements Downstream of a Turbine Cascade at Different Incidence Angles and Pitch-Chord Ratios

Vincenzo Dossena, Antonio Perdichizzi, Marina Ubaldi, Pietro Zunino
Proc. ASME. GT1993, Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, V001T03A020, May 24–27, 1993
Publisher: American Society of Mechanical Engineers
Paper No: 93-GT-052
https://doi.org/10.1115/93-GT-052
View Paper titled, Turbulence Measurements Downstream of a Turbine Cascade at Different Incidence Angles and Pitch-Chord Ratios
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Topics: Cascades (Fluid dynamics), Chords (Trusses), Turbines, Turbulence, Design, Energy dissipation, Flow (Dynamics), Blades, Flow measurement, Stress
Proceedings Papers

An Experimental Investigation of Stator Induced Unsteadiness on Centrifugal Impeller Outflow

Marina Ubaldi, Pietro Zunino, Glovanna Barigozzi, Andrea Cattanel
Proc. ASME. GT1994, Volume 1: Turbomachinery, V001T01A002, June 13–16, 1994
Publisher: American Society of Mechanical Engineers
Paper No: 94-GT-005
https://doi.org/10.1115/94-GT-005
View Paper titled, An Experimental Investigation of Stator Induced Unsteadiness on Centrifugal Impeller Outflow
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Topics: Impellers, Outflow, Stators, Diffusers, Flow (Dynamics), Probes, Blades, Flow measurement, Pressure, Pressure transducers
Proceedings Papers

Detailed Velocity and Turbulence Measurements of the Profile Boundary Layer in a Large Scale Turbine Cascade

Marina Ubaldi, Pietro Zunino, Ugo Campora, Andrea Ghiglione
Proc. ASME. GT1996, Volume 1: Turbomachinery, V001T01A010, June 10–13, 1996
Publisher: American Society of Mechanical Engineers
Paper No: 96-GT-042
https://doi.org/10.1115/96-GT-042
View Paper titled, Detailed Velocity and Turbulence Measurements of the Profile Boundary Layer in a Large Scale Turbine Cascade
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Topics: Boundary layers, Cascades (Fluid dynamics), Turbines, Turbulence, Fibers, Flow (Dynamics), Gages, Lasers, Pressure, Stress
Proceedings Papers

Off-Design Performance of a Highly Loaded LP Turbine Cascade Under Steady and Unsteady Incoming Flow Conditions

Marco Berrino, Daniele Simoni, Marina Ubaldi, Pietro Zunino, Francesco Bertini
Proc. ASME. GT2014, Volume 2D: Turbomachinery, V02DT44A005, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-25396
https://doi.org/10.1115/GT2014-25396
View Paper titled, Off-Design Performance of a Highly Loaded LP Turbine Cascade Under Steady and Unsteady Incoming Flow Conditions
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Topics: Cascades (Fluid dynamics), Design, Flow (Dynamics), Turbines, Inflow, Pressure, Blades, Wakes, Aerodynamics, Bearings