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Journal Articles

The Impact of Manufacturing Variations on the Aerothermal Performance of High-Pressure Turbine Blade Shrouds

Accepted Manuscript
Bram Hulhoven, John D. Coull, Dougal Jackson, Nicholas R. Atkins
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-24-1209
https://doi.org/10.1115/1.4068482
Published Online: April 18, 2025
View Articletitled, The Impact of Manufacturing Variations on the Aerothermal Performance of High-Pressure Turbine Blade Shrouds
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Topics: Heat transfer, High pressure (Physics), Manufacturing, Turbine blades, Turbochargers, Flow (Dynamics), Simulation, Reynolds-averaged Navier–Stokes equations, Uncertainty, Compressors
Journal Articles

High Effectiveness Tip Cooling Using Inclined Slots

Macdonald Mutekwa, Joao Vieira, Maximilian G. Farfaras, John D. Coull, Marko Bacic, Peter T. Ireland
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. September 2025, 147(9): 091011.
Paper No: TURBO-24-1266
https://doi.org/10.1115/1.4067517
Published Online: February 17, 2025
View Articletitled, High Effectiveness Tip Cooling Using Inclined Slots
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Topics: Coolants, Cooling, Design, Flow (Dynamics), Pressure, Geometry, Film cooling, Computational fluid dynamics, Density
Proceedings Papers

The Impact of Manufacturing Variations on the Aerothermal Performance of High-Pressure Turbine Blade Shrouds

Bram Hulhoven, John D. Coull, Dougal Jackson, Nicholas R. Atkins
Proc. ASME. GT2024, Volume 13: Heat Transfer: General Interest / Additive Manufacturing Impacts on Heat Transfer; Wind Energy, V013T13A021, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125688
https://doi.org/10.1115/GT2024-125688
View Paper titled, The Impact of Manufacturing Variations on the Aerothermal Performance of High-Pressure Turbine Blade Shrouds
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Topics: Heat transfer, High pressure (Physics), Manufacturing, Turbine blades
Proceedings Papers

High Effectiveness Tip Cooling Using Inclined Slots

Macdonald Mutekwa, Joao Vieira, Maximilian G. Farfaras, John D. Coull, Marko Bacic, Peter T. Ireland
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A007, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121742
https://doi.org/10.1115/GT2024-121742
View Paper titled, High Effectiveness Tip Cooling Using Inclined Slots
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Topics: Cooling, Coolants, Design, Blades, Pressure, Turbines, Aerodynamics, Cascades (Fluid dynamics), Density, Engines
Journal Articles

The Effect of Inlet Conditions on Turbine Endwall Loss

John D. Coull, Christopher J. Clark
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2022, 144(10): 101011.
Paper No: TURBO-22-1038
https://doi.org/10.1115/1.4054443
Published Online: June 16, 2022
View Articletitled, The Effect of Inlet Conditions on Turbine Endwall Loss
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Topics: Boundary layers, Computational fluid dynamics, Flow (Dynamics), Kinetic energy, Vorticity, Shapes, Turbines, Design, Cascades (Fluid dynamics)
Proceedings Papers

The Effect of Inlet Conditions on Turbine Endwall Loss

John D. Coull, Christopher J. Clark
Proc. ASME. GT2021, Volume 2B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V02BT32A011, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59694
https://doi.org/10.1115/GT2021-59694
View Paper titled, The Effect of Inlet Conditions on Turbine Endwall Loss
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Topics: Turbines, Vorticity, Blades, Boundary layers, Boundary-value problems, Design, Displacement, Energy dissipation, Flow (Dynamics), Kinetic energy
Journal Articles

Physics-Based Part Orientation and Sentencing: A Solution to Manufacturing Variability

Wen Yao Lee, William N. Dawes, John D. Coull
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2020, 142(10): 101001.
Paper No: TURBO-20-1037
https://doi.org/10.1115/1.4047613
Published Online: September 11, 2020
View Articletitled, Physics-Based Part Orientation and Sentencing: A Solution to Manufacturing Variability
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Topics: Blades, Manufacturing, Physics, Rotors, Geometry, Design
Journal Articles

The Impact of Combustor Turbulence on Turbine Loss Mechanisms

Masha Folk, Robert J. Miller, John D. Coull
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. September 2020, 142(9): 091009.
Paper No: TURBO-20-1040
https://doi.org/10.1115/1.4047615
Published Online: August 24, 2020
View Articletitled, The Impact of Combustor Turbulence on Turbine Loss Mechanisms
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Topics: Boundary layers, Combustion chambers, Turbulence, Turbines
Proceedings Papers

The Impact of Combustor Turbulence on Turbine Loss Mechanisms

Masha Folk, Robert J. Miller, John D. Coull
Proc. ASME. GT2019, Volume 2B: Turbomachinery, V02BT40A002, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90307
https://doi.org/10.1115/GT2019-90307
View Paper titled, The Impact of Combustor Turbulence on Turbine Loss Mechanisms
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Topics: Combustion chambers, Turbines, Turbulence, Blades, Cascades (Fluid dynamics), Anisotropy, Boundary layer turbulence, Boundary layers, Chords (Trusses), Cross-flow
Proceedings Papers

Physics-Based Part Orientation and Sentencing: A Solution to Manufacturing Variability

Wen Yao Lee, William N. Dawes, John D. Coull
Proc. ASME. GT2019, Volume 2D: Turbomachinery, V02DT46A019, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91591
https://doi.org/10.1115/GT2019-91591
View Paper titled, Physics-Based Part Orientation and Sentencing: A Solution to Manufacturing Variability
Open the PDF for Physics-Based Part Orientation and Sentencing: A Solution to Manufacturing Variability in another window
Topics: Manufacturing, Physics, Blades, Casting, Aircraft engines, Design, Engineering simulation, Errors, Geometry, High pressure (Physics)
Journal Articles

An Experimental Investigation of Adiabatic Film Cooling Effectiveness and Heat Transfer Coefficient on a Transonic Squealer Tip

Andrew J. Saul, Peter T. Ireland, John D. Coull, Tsun Holt Wong, Haidong Li, Eduardo Romero
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. September 2019, 141(9): 091005.
Paper No: TURBO-18-1310
https://doi.org/10.1115/1.4043263
Published Online: May 30, 2019
View Articletitled, An Experimental Investigation of Adiabatic Film Cooling Effectiveness and Heat Transfer Coefficient on a Transonic Squealer Tip
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Topics: Cavities, Clearances (Engineering), Coolants, Film cooling, Flow (Dynamics), Heat transfer coefficients, Pressure, Computational fluid dynamics, Blades, Engines
Proceedings Papers

An Experimental Investigation of Adiabatic Film Cooling Effectiveness and Heat Transfer Coefficient on a Transonic Squealer Tip

Andrew J. Saul, Peter T. Ireland, John D. Coull, Tsun Holt Wong, Haidong Li, Eduardo Romero
Proc. ASME. GT2018, Volume 5C: Heat Transfer, V05CT19A023, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76207
https://doi.org/10.1115/GT2018-76207
View Paper titled, An Experimental Investigation of Adiabatic Film Cooling Effectiveness and Heat Transfer Coefficient on a Transonic Squealer Tip
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Topics: Film cooling, Heat transfer coefficients, Coolants, Pressure, Flow (Dynamics), Leakage flows, Blades, Cascades (Fluid dynamics), Clearances (Engineering), Engines
Journal Articles

Endwall Loss in Turbine Cascades

John D. Coull
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. August 2017, 139(8): 081004.
Paper No: TURBO-16-1281
https://doi.org/10.1115/1.4035663
Published Online: March 15, 2017
View Articletitled, Endwall Loss in Turbine Cascades
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Topics: Blades, Boundary layers, Design, Flow (Dynamics), Pressure, Suction, Turbines, Energy dissipation
Journal Articles

Parasitic Loss Due to Leading Edge Instrumentation on a Low-Pressure Turbine Blade

Henry C.-H. Ng, John D. Coull
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. April 2017, 139(4): 041007.
Paper No: TURBO-16-1218
https://doi.org/10.1115/1.4035043
Published Online: January 10, 2017
View Articletitled, Parasitic Loss Due to Leading Edge Instrumentation on a Low-Pressure Turbine Blade
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Topics: Blades, Pressure, Probes, Flow (Dynamics)
Proceedings Papers

Parasitic Loss due to Leading Edge Instrumentation on a Low Pressure Turbine Blade

Henry C.-H. Ng, John D. Coull
Proc. ASME. GT2016, Volume 2B: Turbomachinery, V02BT38A042, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57367
https://doi.org/10.1115/GT2016-57367
View Paper titled, Parasitic Loss due to Leading Edge Instrumentation on a Low Pressure Turbine Blade
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Topics: Instrumentation, Pressure, Turbine blades, Probes, Blades, Vortices, Boundary layers, Cascades (Fluid dynamics), Testing, Turbulence
Proceedings Papers

Endwall Loss in Turbine Cascades

John D. Coull
Proc. ASME. GT2016, Volume 2B: Turbomachinery, V02BT38A039, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57325
https://doi.org/10.1115/GT2016-57325
View Paper titled, Endwall Loss in Turbine Cascades
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Topics: Turbines, Design, Flow (Dynamics), Aerodynamics, Aircraft engines, Blades, Engineers, Engines, Pressure, Suction
Journal Articles

The Influence of Boundary Conditions on Tip Leakage Flow

John D. Coull, Nicholas R. Atkins
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. June 2015, 137(6): 061005.
Paper No: TURBO-14-1152
https://doi.org/10.1115/1.4028796
Published Online: June 1, 2015
View Articletitled, The Influence of Boundary Conditions on Tip Leakage Flow
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Topics: Blades, Flow (Dynamics), Leakage flows, Pressure, Suction, Boundary-value problems, Leakage, Heat transfer
Proceedings Papers

High Efficiency Cavity Winglets for High Pressure Turbines

John D. Coull, Nicholas R. Atkins, Howard P. Hodson
Proc. ASME. GT2014, Volume 2C: Turbomachinery, V02CT38A005, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-25261
https://doi.org/10.1115/GT2014-25261
View Paper titled, High Efficiency Cavity Winglets for High Pressure Turbines
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Topics: Cavities, High pressure (Physics), Turbines, Blades, Flow (Dynamics), Clearances (Engineering), Design, Coolants, Cooling, Discharge coefficient
Journal Articles

Winglets for Improved Aerothermal Performance of High Pressure Turbines

John D. Coull, Nick R. Atkins, Howard P. Hodson
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. September 2014, 136(9): 091007.
Paper No: TURBO-13-1229
https://doi.org/10.1115/1.4026909
Published Online: May 2, 2014
View Articletitled, Winglets for Improved Aerothermal Performance of High Pressure Turbines
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Topics: Blades, Flow (Dynamics), Heat, Leakage, Leakage flows, Mach number, Pressure, Stress, Suction, Design
Proceedings Papers

The Influence of Boundary Conditions on Tip Leakage Flow

John D. Coull, Nicholas R. Atkins
Proc. ASME. TBTS2013, ASME 2013 Turbine Blade Tip Symposium, V001T01A004, September 30–October 3, 2013
Publisher: American Society of Mechanical Engineers
Paper No: TBTS2013-2057
https://doi.org/10.1115/TBTS2013-2057
View Paper titled, The Influence of Boundary Conditions on Tip Leakage Flow
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Topics: Boundary-value problems, Leakage flows, Cascades (Fluid dynamics), Rotors, Turbines, Flow (Dynamics), High pressure (Physics), Aerodynamics, Aircraft engines, Blades