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Nicholas J. Hills
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Journal Articles

Transient Shutdown Cooling Simulation of a Gas Turbine Test Rig Configuration Under Ventilated Natural Convection

Zixiang Sun, Dario Amirante, Christopher J. Barnes, Nicholas J. Hills, Daniel Fahy
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2025, 147(3): 031011.
Paper No: GTP-24-1438
https://doi.org/10.1115/1.4066373
Published Online: October 4, 2024
View Article titled, Transient Shutdown Cooling Simulation of a Gas Turbine Test Rig Configuration Under Ventilated Natural Convection
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Topics: Computational fluid dynamics, Cooling, Cylinders, Finite element analysis, Flow (Dynamics), Heat transfer, Natural convection, Radiation (Physics), Simulation, Temperature
Journal Articles

Transient Aero-Thermo-Mechanical Multidimensional Analysis of a High Pressure Turbine Assembly Through a Square Cycle

Vladislav Ganine, John W. Chew, Nicholas J. Hills, Sulfi Noor Mohamed, Matthew M. Miller
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2021, 143(8): 081008.
Paper No: GTP-20-1506
https://doi.org/10.1115/1.4049498
Published Online: March 31, 2021
View Article titled, Transient Aero-Thermo-Mechanical Multidimensional Analysis of a High Pressure Turbine Assembly Through a Square Cycle
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Topics: Cavities, Cycles, Engines, Flow (Dynamics), Fluids, High pressure (Physics), Pressure, Simulation, Transients (Dynamics), Turbines
Journal Articles

A Multifidelity Aero-Thermal Design Approach for Secondary Air Systems

Dario Amirante, Paolo Adami, Nicholas J. Hills
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2021, 143(3): 031012.
Paper No: GTP-20-1650
https://doi.org/10.1115/1.4049406
Published Online: February 9, 2021
View Article titled, A Multifidelity Aero-Thermal Design Approach for Secondary Air Systems
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Topics: Cavities, Design, Disks, Flow (Dynamics), Fluids, Metals, Pressure, Simulation, Temperature, Turbines
Proceedings Papers

A Multi-Fidelity Aero-Thermal Design Approach for Secondary Air Systems

Dario Amirante, Nicholas J. Hills, Paolo Adami
Proc. ASME. GT2020, Volume 2C: Turbomachinery, V02CT35A047, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15922
https://doi.org/10.1115/GT2020-15922
View Paper titled, A Multi-Fidelity Aero-Thermal Design Approach for Secondary Air Systems
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Topics: Design, Fluids, Metals, Simulation, Cavities, Engines, Flow (Dynamics), Heat transfer, Annulus, Blades
Proceedings Papers

Transient Aero-Thermo-Mechanical Multidimensional Analysis of a High Pressure Turbine Assembly Through a Square Cycle

Vlad Ganine, John W. Chew, Nicholas J. Hills, Sulfi N. Mohamed, Matthew M. Miller
Proc. ASME. GT2020, Volume 7C: Heat Transfer, V07CT14A024, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15667
https://doi.org/10.1115/GT2020-15667
View Paper titled, Transient Aero-Thermo-Mechanical Multidimensional Analysis of a High Pressure Turbine Assembly Through a Square Cycle
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Topics: Cycles, High pressure (Physics), Manufacturing, Transients (Dynamics), Turbines, Flow (Dynamics), Cooling, Engines, Heat transfer, Aircraft engines
Proceedings Papers

A CFD Assessment of Engine Core Zone Casing Heat Transfer

Zixiang Sun, Nicholas J. Hills, Richard Scott
Proc. ASME. GT2019, Volume 5B: Heat Transfer, V05BT22A003, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90381
https://doi.org/10.1115/GT2019-90381
View Paper titled, A CFD Assessment of Engine Core Zone Casing Heat Transfer
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Topics: Computational fluid dynamics, Engines, Heat transfer, Radiation (Physics), Buoyancy, Flow (Dynamics), Aircraft engines, Convection, Forced convection, Stress
Proceedings Papers

Heat Transfer Prediction From Large Eddy Simulation of a Rotating Cavity With Radial Inflow

Michel Onori, Dario Amirante, Nicholas J. Hills, John W. Chew
Proc. ASME. GT2019, Volume 5B: Heat Transfer, V05BT15A003, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90450
https://doi.org/10.1115/GT2019-90450
View Paper titled, Heat Transfer Prediction From Large Eddy Simulation of a Rotating Cavity With Radial Inflow
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Topics: Cavities, Heat transfer, Inflow, Large eddy simulation, Flow (Dynamics), Buoyancy, Disks, Eddies (Fluid dynamics), Reynolds number, Viscosity
Journal Articles

Heat Transfer Prediction From Large Eddy Simulation of a Rotating Cavity With Radial Inflow

Michel Onori, Dario Amirante, Nicholas J. Hills, John W. Chew
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2019, 141(12): 121002.
Paper No: GTP-19-1497
https://doi.org/10.1115/1.4045150
Published Online: October 24, 2019
View Article titled, Heat Transfer Prediction From Large Eddy Simulation of a Rotating Cavity With Radial Inflow
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Topics: Cavities, Flow (Dynamics), Inflow, Large eddy simulation, Heat transfer, Viscosity, Disks, Turbulence, Temperature, Fluids
Proceedings Papers

CFD Simulation of Blade Flows With High Amplitude Pitching

Ramesh Kumar, John W. Chew, Dario Amirante, Joseba Murua, Nicholas J. Hills
Proc. ASME. GT2017, Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy, V009T49A005, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63573
https://doi.org/10.1115/GT2017-63573
View Paper titled, CFD Simulation of Blade Flows With High Amplitude Pitching
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Topics: Blades, Computational fluid dynamics, Flow (Dynamics), Simulation, Airfoils, Deformation, Modeling, Springs, Wind turbines
Journal Articles

Direct Numerical Simulation of Rotating Cavity Flows Using a Spectral Element-Fourier Method

Diogo B. Pitz, John W. Chew, Olaf Marxen, Nicholas J. Hills
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2017, 139(7): 072602.
Paper No: GTP-16-1411
https://doi.org/10.1115/1.4035593
Published Online: February 14, 2017
View Article titled, Direct Numerical Simulation of Rotating Cavity Flows Using a Spectral Element-Fourier Method
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Topics: Approximation, Buoyancy, Cavities, Flow (Dynamics), Rotors, Stators, Reynolds number, Annulus, Disks, Rayleigh number
Journal Articles

Effect of Bolts on Flow and Heat Transfer in a Rotor–Stator Disk Cavity

Sulfickerali Noor Mohamed, John W. Chew, Nicholas J. Hills
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2017, 139(5): 051901.
Paper No: GTP-16-1330
https://doi.org/10.1115/1.4035144
Published Online: January 4, 2017
View Article titled, Effect of Bolts on Flow and Heat Transfer in a Rotor–Stator Disk Cavity
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Topics: Cavities, Computational fluid dynamics, Disks, Flow (Dynamics), Heat transfer, Rotors, Stators, Temperature, Wakes, Pressure
Proceedings Papers

LES Validation for a Rotating Cylindrical Cavity With Radial Inflow

Michel Onori, Dario Amirante, Nicholas J. Hills, John W. Chew
Proc. ASME. GT2016, Volume 2D: Turbomachinery, V02DT44A008, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56393
https://doi.org/10.1115/GT2016-56393
View Paper titled, LES Validation for a Rotating Cylindrical Cavity With Radial Inflow
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Topics: Cavities, Inflow, Boundary layers, Disks, Reynolds-averaged Navier–Stokes equations, Turbulence, Damping, Engineering simulation, Flow (Dynamics), Large eddy simulation
Proceedings Papers

Aero-Thermo-Mechanical Modelling and Validation of Transient Effects in a High Pressure Turbine Internal Air System

Vlad Ganine, Dario Amirante, Nicholas J. Hills
Proc. ASME. GT2016, Volume 5A: Heat Transfer, V05AT15A030, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57739
https://doi.org/10.1115/GT2016-57739
View Paper titled, Aero-Thermo-Mechanical Modelling and Validation of Transient Effects in a High Pressure Turbine Internal Air System
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Topics: High pressure (Physics), Modeling, Transients (Dynamics), Turbines, Fluids, Engines, Dynamics (Mechanics), Flight, Geometry, Aircraft engines
Proceedings Papers

Effect of Bolts on Flow and Heat Transfer in a Rotor-Stator Disc Cavity

Sulfickerali Noor Mohamed, John W. Chew, Nicholas J. Hills
Proc. ASME. GT2016, Volume 5A: Heat Transfer, V05AT15A007, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56470
https://doi.org/10.1115/GT2016-56470
View Paper titled, Effect of Bolts on Flow and Heat Transfer in a Rotor-Stator Disc Cavity
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Topics: Cavities, Disks, Flow (Dynamics), Heat transfer, Rotors, Stators, Computational fluid dynamics, Engineering simulation, Simulation, Temperature
Proceedings Papers

Direct Numerical Simulation of Rotating Cavity Flows Using a Spectral Element-Fourier Method

Diogo B. Pitz, John W. Chew, Olaf Marxen, Nicholas J. Hills
Proc. ASME. GT2016, Volume 5A: Heat Transfer, V05AT15A009, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56486
https://doi.org/10.1115/GT2016-56486
View Paper titled, Direct Numerical Simulation of Rotating Cavity Flows Using a Spectral Element-Fourier Method
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Topics: Cavity flows, Computer simulation, Approximation, Rotors, Cavities, Flow (Dynamics), Numerical analysis, Stators, Algorithms, Buoyancy
Journal Articles

Coupled Aerothermal Modeling of a Rotating Cavity With Radial Inflow

Zixiang Sun, Dario Amirante, John W. Chew, Nicholas J. Hills
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2016, 138(3): 032505.
Paper No: GTP-15-1298
https://doi.org/10.1115/1.4031387
Published Online: October 6, 2015
View Article titled, Coupled Aerothermal Modeling of a Rotating Cavity With Radial Inflow
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Topics: Cavities, Computational fluid dynamics, Disks, Flow (Dynamics), Heat transfer, Inflow, Modeling, Simulation, Temperature, Turbulence
Proceedings Papers

Coupled Aero-Thermal Modeling of a Rotating Cavity With Radial Inflow

Zixiang Sun, Dario Amirante, John W. Chew, Nicholas J. Hills
Proc. ASME. GT2015, Volume 5C: Heat Transfer, V05CT15A011, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42609
https://doi.org/10.1115/GT2015-42609
View Paper titled, Coupled Aero-Thermal Modeling of a Rotating Cavity With Radial Inflow
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Topics: Cavities, Inflow, Modeling, Computational fluid dynamics, Compressors, Flow (Dynamics), Disks, Turbulence, Aircraft engines, Blades
Journal Articles

Large-Eddy Simulations of Wall Bounded Turbulent Flows Using Unstructured Linear Reconstruction Techniques

Dario Amirante, Nicholas J. Hills
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. May 2015, 137(5): 051006.
Paper No: TURBO-14-1196
https://doi.org/10.1115/1.4028549
Published Online: May 1, 2015
View Article titled, Large-Eddy Simulations of Wall Bounded Turbulent Flows Using Unstructured Linear Reconstruction Techniques
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Topics: Flow (Dynamics), Rotors, Stators, Turbulence, Errors, Pipe flow, Cavities, Viscosity, Large eddy simulation, Boundary layers
Proceedings Papers

Aerodynamics of Turbine Rim-Seal Ingestion

Nicholas J. Hills, Tony Green, Alan B. Turner, John W. Chew
Proc. ASME. GT1997, Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, V003T09A051, June 2–5, 1997
Publisher: American Society of Mechanical Engineers
Paper No: 97-GT-268
https://doi.org/10.1115/97-GT-268
View Paper titled, Aerodynamics of Turbine Rim-Seal Ingestion
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Topics: Aerodynamics, Cavities, Clearances (Engineering), Computational fluid dynamics, Coolants, Flow (Dynamics), Guide vanes, Modeling, Nozzle guide vanes, Pressure
Proceedings Papers

LES of Wall Bounded Turbulent Flows Using Unstructured Linear Reconstruction Techniques

Dario Amirante, Nicholas J. Hills
Proc. ASME. GT2014, Volume 2B: Turbomachinery, V02BT39A022, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-26119
https://doi.org/10.1115/GT2014-26119
View Paper titled, LES of Wall Bounded Turbulent Flows Using Unstructured Linear Reconstruction Techniques
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Topics: Turbulence, Flow (Dynamics), Reynolds number, Compressible flow, Large eddy simulation, Mach number, Numerical analysis, Pipe flow, Pipes, Rotors