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Tiziano Ghisu
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Proceedings Papers

Combustor Traverse Optimization to Lower High-Pressure Turbine Rotor Temperatures

Mario Carta, Tiziano Ghisu, Shahrokh Shahpar
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A040, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128054
https://doi.org/10.1115/GT2024-128054
View Paper titled, Combustor Traverse Optimization to Lower High-Pressure Turbine Rotor Temperatures
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Topics: Combustion chambers, Heat transfer, High pressure (Physics), Jet engines, Optimization, Rotors, Simulation, Temperature, Turbines, High temperature
Proceedings Papers

Secondary Flow Control of Turbomachinery Blades Using Vortex Generators

Roberto Putzu, Tiziano Ghisu, Shahrokh Shahpar
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A040, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103769
https://doi.org/10.1115/GT2023-103769
View Paper titled, Secondary Flow Control of Turbomachinery Blades Using Vortex Generators
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Topics: Blades, Flow control, Generators, Turbomachinery, Vortices, Flow (Dynamics), Compressors, Fans, Aerodynamics, Boundary layers
Proceedings Papers

Multi-Fidelity Heat Transfer Analysis of Shrouded High-Pressure Turbine Rotor Blades

Mario Carta, Tiziano Ghisu, Shahrokh Shahpar
Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A038, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103789
https://doi.org/10.1115/GT2023-103789
View Paper titled, Multi-Fidelity Heat Transfer Analysis of Shrouded High-Pressure Turbine Rotor Blades
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Topics: Blades, Geometry, Heat transfer, High pressure (Physics), Rotors, Simulation, Turbines
Proceedings Papers

Extending Highly Loaded Axial Fan Operability Range Through Novel Blade Design

Diego I. Lopez, Tiziano Ghisu, Timoleon Kipouros, Shahrokh Shahpar, Mark Wilson
Proc. ASME. GT2022, Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V10AT29A016, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81748
https://doi.org/10.1115/GT2022-81748
View Paper titled, Extending Highly Loaded Axial Fan Operability Range Through Novel Blade Design
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Topics: Blades, Design, Momentum, Clearances (Engineering), Stability, Computer simulation, Compressors, Computation, Engineering simulation, Leakage flows
Proceedings Papers

High-Fidelity CFD Analysis of In-Serviced Shrouded High-Pressure Turbine Rotor Blades

Mario Carta, Tiziano Ghisu, Shahrokh Shahpar
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A019, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82171
https://doi.org/10.1115/GT2022-82171
View Paper titled, High-Fidelity CFD Analysis of In-Serviced Shrouded High-Pressure Turbine Rotor Blades
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Topics: Blades, Computational fluid dynamics, Damage, High pressure (Physics), Reverse engineering, Rotors, Turbines
Proceedings Papers

Digital Shadow and Robust Optimization of in Service Squealer Tip Turbine Blades

Irene Virdis, Tiziano Ghisu, Shahrokh Shahpar, Iñaki de la Puerta, Haidong Li
Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT34A009, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81779
https://doi.org/10.1115/GT2022-81779
View Paper titled, Digital Shadow and Robust Optimization of in Service Squealer Tip Turbine Blades
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Topics: High pressure (Physics), Optimization, Shades and shadows, Turbine blades, Uncertainty quantification
Journal Articles

Extending Highly Loaded Axial Fan Operability Range Through Novel Blade Design

Diego I. Lopez, Tiziano Ghisu, Timoleon Kipouros, Shahrokh Shahpar, Mark Wilson
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. December 2022, 144(12): 121009.
Paper No: TURBO-22-1121
https://doi.org/10.1115/1.4055350
Published Online: September 19, 2022
View Article titled, Extending Highly Loaded Axial Fan Operability Range Through Novel Blade Design
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Topics: Blades, Design, Computational fluid dynamics, Flow (Dynamics), Stability, Pressure, Momentum, Leakage flows, Leakage
Journal Articles

High-Fidelity Computational Fluid Dynamics Analysis of In-Serviced Shrouded High-Pressure Turbine Rotor Blades

Mario Carta, Tiziano Ghisu, Shahrokh Shahpar
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. December 2022, 144(12): 121001.
Paper No: TURBO-22-1122
https://doi.org/10.1115/1.4055267
Published Online: September 13, 2022
View Article titled, High-Fidelity Computational Fluid Dynamics Analysis of In-Serviced Shrouded High-Pressure Turbine Rotor Blades
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Topics: Blades, Computational fluid dynamics, Damage, Rotors, Shapes, Turbines, Reverse engineering, High pressure (Physics), Flow (Dynamics), Airfoils
Journal Articles

Global Optimization of a Transonic Fan Blade Through AI-Enabled Active Subspaces

Diego I. Lopez, Tiziano Ghisu, Shahrokh Shahpar
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2022, 144(1): 011013.
Paper No: TURBO-21-1141
https://doi.org/10.1115/1.4052136
Published Online: September 21, 2021
View Article titled, Global Optimization of a Transonic Fan Blade Through AI-Enabled Active Subspaces
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Topics: Blades, Design, Optimization, Computational fluid dynamics, Artificial neural networks
Proceedings Papers

Global Optimisation of a Transonic Fan Blade Through AI-Enabled Active Subspaces

Diego I. Lopez, Tiziano Ghisu, Shahrokh Shahpar
Proc. ASME. GT2021, Volume 2A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V02AT31A026, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59166
https://doi.org/10.1115/GT2021-59166
View Paper titled, Global Optimisation of a Transonic Fan Blade Through AI-Enabled Active Subspaces
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Topics: Artificial neural networks, Blades, Computational fluid dynamics, Design, Optimization
Journal Articles

A Comparison of Different Approaches to Estimate the Efficiency of Wells Turbines

Fabio Licheri, Francesco Cambuli, Pierpaolo Puddu, Tiziano Ghisu
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. May 2021, 143(5): 051205.
Paper No: FE-20-1442
https://doi.org/10.1115/1.4049686
Published Online: February 9, 2021
View Article titled, A Comparison of Different Approaches to Estimate the Efficiency of Wells Turbines
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Topics: Blades, Entropy, Flow (Dynamics), Rotors, Turbines, Turbulence, Wells, Simulation, Engineering simulation, Torque
Journal Articles

A Critical Examination of the Hysteresis in Wells Turbines Using Computational Fluid Dynamics and Lumped Parameter Models

Tiziano Ghisu, Francesco Cambuli, Pierpaolo Puddu, Irene Virdis, Mario Carta, Fabio Licheri
Journal: Journal of Offshore Mechanics and Arctic Engineering
Publisher: ASME
Article Type: Research Papers
J. Offshore Mech. Arct. Eng. October 2020, 142(5): 052001.
Paper No: OMAE-19-1103
https://doi.org/10.1115/1.4046379
Published Online: March 11, 2020
View Article titled, A Critical Examination of the Hysteresis in Wells Turbines Using Computational Fluid Dynamics and Lumped Parameter Models
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Topics: Computational fluid dynamics, Flow (Dynamics), Lumped parameter models, Simulation, Torque, Turbines, Wells, Pistons
Journal Articles

Discussion: “Unsteady RANS Simulations of Wells Turbine Under Transient Flow Conditions” (Hu and Li, ASME J. Offshore Mech. Arct. Eng., 140(1), p. 011901)

Tiziano Ghisu, Francesco Cambuli, Pierpaolo Puddu, Irene Virdis, Mario Carta
Journal: Journal of Offshore Mechanics and Arctic Engineering
Publisher: ASME
Article Type: Discussions
J. Offshore Mech. Arct. Eng. August 2019, 141(4): 045501.
Paper No: OMAE-18-1072
https://doi.org/10.1115/1.4042875
Published Online: March 14, 2019
View Article titled, Discussion: “Unsteady RANS Simulations of Wells Turbine Under Transient Flow Conditions” (Hu and Li, ASME J. Offshore Mech. Arct. Eng., 140(1), p. 011901)
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Topics: Simulation, Turbines, Wells, Airfoils, Engineering simulation, Reynolds-averaged Navier–Stokes equations, Ocean engineering, Unsteady flow
Journal Articles

Affordable Uncertainty Quantification for Industrial Problems: Application to Aero-Engine Fans

Tiziano Ghisu, Shahrokh Shahpar
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. May 2018, 140(6): 061005.
Paper No: TURBO-17-1198
https://doi.org/10.1115/1.4038982
Published Online: April 27, 2018
View Article titled, Affordable Uncertainty Quantification for Industrial Problems: Application to Aero-Engine Fans
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Topics: Blades, Design, Geometry, Polynomials, Pressure, Uncertainty, Uncertainty quantification, Fans, Chaos, Flow (Dynamics)
Proceedings Papers

Toward Affordable Uncertainty Quantification for Industrial Problems: Part I — Theory and Validation

Tiziano Ghisu, Shahrokh Shahpar
Proc. ASME. GT2017, Volume 2C: Turbomachinery, V02CT47A019, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64842
https://doi.org/10.1115/GT2017-64842
View Paper titled, Toward Affordable Uncertainty Quantification for Industrial Problems: Part I — Theory and Validation
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Topics: Uncertainty quantification, Polynomials, Uncertainty, Approximation, Chaos, Deflection, Least squares approximations, Tensors
Proceedings Papers

Toward Affordable Uncertainty Quantification for Industrial Problems: Part II — Turbomachinery Application

Tiziano Ghisu, Shahrokh Shahpar
Proc. ASME. GT2017, Volume 2C: Turbomachinery, V02CT47A021, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64845
https://doi.org/10.1115/GT2017-64845
View Paper titled, Toward Affordable Uncertainty Quantification for Industrial Problems: Part II — Turbomachinery Application
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Topics: Turbomachinery, Uncertainty quantification, Uncertainty, Manufacturing, Shapes, Blades, Design, Chaos, Engineering simulation, Fans
Journal Articles

Physical Explanation of the Hysteresis in Wells Turbines: A Critical Reconsideration

Tiziano Ghisu, Pierpaolo Puddu, Francesco Cambuli
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. November 2016, 138(11): 111105.
Paper No: FE-15-1895
https://doi.org/10.1115/1.4033320
Published Online: July 15, 2016
View Article titled, Physical Explanation of the Hysteresis in Wells Turbines: A Critical Reconsideration
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Topics: Blades, Flow (Dynamics), Turbines, Wells, Geometry
Journal Articles

Balancing Configuration and Refinement in the Design of Two-Spool Multistage Compression Systems

Jerome P. Jarrett, Tiziano Ghisu
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. September 2015, 137(9): 091008.
Paper No: TURBO-15-1036
https://doi.org/10.1115/1.4030051
Published Online: September 1, 2015
View Article titled, Balancing Configuration and Refinement in the Design of Two-Spool Multistage Compression Systems
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Topics: Compression, Design, Optimization, Surges
Proceedings Papers

Balancing Configuration and Refinement in the Design of Two-Spool Multistage Compression Systems

Jerome P. Jarrett, Tiziano Ghisu
Proc. ASME. GT2014, Volume 2B: Turbomachinery, V02BT39A028, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-26371
https://doi.org/10.1115/GT2014-26371
View Paper titled, Balancing Configuration and Refinement in the Design of Two-Spool Multistage Compression Systems
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Topics: Compression, Design, Computational fluid dynamics, Degrees of freedom, Optimization, Optimization algorithms, Physics, Pressure, Surges, Turbofans
Proceedings Papers

Characterisation of the Uncertainties of the Operating Conditions in Turbomachinery Design

Timoleon Kipouros, Vassilios Pachidis, Tiziano Ghisu, Ioannis Templalexis
Proc. ASME. GT2010, Volume 3: Controls, Diagnostics and Instrumentation; Cycle Innovations; Marine, 793-802, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-23253
https://doi.org/10.1115/GT2010-23253
View Paper titled, Characterisation of the Uncertainties of the Operating Conditions in Turbomachinery Design
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Topics: Design, Turbomachinery, Uncertainty, Compression, Compressors, Flow (Dynamics), Density, Engineering design, Engines, Gas turbines