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James A. Scobie
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Journal Articles

On the Relationship Between Swirl and Unsteadiness Within Turbine Rim Seals

Open Access
Simon Vella, Hui Tang, Mauro Carnevale, James A. Scobie, Gary D. Lock, Francesco Salvatori, Carl M. Sangan
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2025, 147(4): 041031.
Paper No: GTP-24-1653
https://doi.org/10.1115/1.4066997
Published Online: December 11, 2024
View Articletitled, On the Relationship Between Swirl and Unsteadiness Within Turbine Rim Seals
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Topics: Annulus, Clearances (Engineering), Flow (Dynamics), Geometry, Rotors, Sealing (Process), Stators, Turbines, Wheels, Pressure
Journal Articles

Flow and Heat Transfer in Rotating Compressor Cavities With Inverted Shroud-Throughflow Temperature Differences

Open Access
Mikolaj J. Pernak, Tom E. W. Nicholas, Mauro Carnevale, Gary D. Lock, Hui Tang, James A. Scobie
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2025, 147(7): 071005.
Paper No: TURBO-24-1182
https://doi.org/10.1115/1.4067075
Published Online: December 10, 2024
View Articletitled, Flow and Heat Transfer in Rotating Compressor Cavities With Inverted Shroud-Throughflow Temperature Differences
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Topics: Cavities, Compressors, Disks, Flow (Dynamics), Heat flux, Heat transfer, Temperature, Temperature gradient, Pressure, Vortices
Journal Articles

Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry

Open Access
Joshua Bird, Patrick S. Keogh, Carl M. Sangan, Aaron A. Bowsher, Peter F. Crudgington, James A. Scobie
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2025, 147(6): 061006.
Paper No: GTP-24-1607
https://doi.org/10.1115/1.4066711
Published Online: November 22, 2024
View Articletitled, Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry
Open the PDF for Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry in another window
Topics: Damping, Excitation, Leakage, Pressure, Stiffness, Rotors, Pressure drop, Test facilities, Geometry
Journal Articles

Tracking of Bristle Tip Deflections to Demonstrate Blow-Down in Brush Seals

Open Access
Joshua P. Bowen, Aaron A. Bowsher, Peter F. Crudgington, Sam Bull, Carl M. Sangan, James A. Scobie
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2025, 147(5): 051012.
Paper No: GTP-24-1597
https://doi.org/10.1115/1.4066608
Published Online: November 14, 2024
View Articletitled, Tracking of Bristle Tip Deflections to Demonstrate Blow-Down in Brush Seals
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Topics: Clearances (Engineering), Deflection, Pressure, Leakage
Journal Articles

Mass and Heat Exchange in Rotating Compressor Cavities With Variable Cob Separation

Open Access
Tom E. W. Nicholas, Mikolaj J. Pernak, Gary D. Lock, James A. Scobie, Hui Tang
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2025, 147(1): 011018.
Paper No: GTP-24-1396
https://doi.org/10.1115/1.4066247
Published Online: September 19, 2024
View Articletitled, Mass and Heat Exchange in Rotating Compressor Cavities With Variable Cob Separation
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Proceedings Papers

Tracking of Bristle Tip Deflections to Demonstrate Blow-Down in Brush Seals

Available to Purchase

Joshua P. Bowen, Aaron A. Bowsher, Peter F. Crudgington, Sam Bull, Carl M. Sangan, James A. Scobie
Proc. ASME. GT2024, Volume 8: Heat Transfer: Internal Air Systems; Heat Transfer: Internal Cooling; Industrial and Cogeneration, V008T14A020, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128820
https://doi.org/10.1115/GT2024-128820
View Paper titled, Tracking of Bristle Tip Deflections to Demonstrate Blow-Down in Brush Seals
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Topics: Deflection, Pressure, Sealing (Process), Clearances (Engineering), Flow (Dynamics), Design, Gas turbines, Mechanical behavior, Rotors, Stress
Proceedings Papers

Mass and Heat Exchange in Rotating Compressor Cavities With Variable Cob Separation

Available to Purchase

Tom E. W. Nicholas, Mikolaj J. Pernak, Gary D. Lock, James A. Scobie, Hui Tang
Proc. ASME. GT2024, Volume 8: Heat Transfer: Internal Air Systems; Heat Transfer: Internal Cooling; Industrial and Cogeneration, V008T14A011, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126600
https://doi.org/10.1115/GT2024-126600
View Paper titled, Mass and Heat Exchange in Rotating Compressor Cavities With Variable Cob Separation
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Topics: Buoyancy, Cavities, Compressors, Flow (Dynamics), Heat, Heat transfer, Separation (Technology)
Proceedings Papers

On the Relationship Between Swirl and Unsteadiness Within Turbine Rim Seals

Available to Purchase

Simon Vella, Hui Tang, Mauro Carnevale, James A. Scobie, Gary D. Lock, Francesco Salvatori, Carl M. Sangan
Proc. ASME. GT2024, Volume 8: Heat Transfer: Internal Air Systems; Heat Transfer: Internal Cooling; Industrial and Cogeneration, V008T14A023, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129016
https://doi.org/10.1115/GT2024-129016
View Paper titled, On the Relationship Between Swirl and Unsteadiness Within Turbine Rim Seals
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Topics: Clearances (Engineering), Emission spectroscopy, Spectroscopy, Turbines
Proceedings Papers

Flow and Heat Transfer in Rotating Compressor Cavities With Inverted Shroud-Throughflow Temperature Differences

Available to Purchase

Mikolaj J. Pernak, Tom E. W. Nicholas, Mauro Carnevale, Gary D. Lock, Hui Tang, James A. Scobie
Proc. ASME. GT2024, Volume 8: Heat Transfer: Internal Air Systems; Heat Transfer: Internal Cooling; Industrial and Cogeneration, V008T14A003, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-123211
https://doi.org/10.1115/GT2024-123211
View Paper titled, Flow and Heat Transfer in Rotating Compressor Cavities With Inverted Shroud-Throughflow Temperature Differences
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Topics: Cavities, Compressors, Flow (Dynamics), Heat transfer, Temperature, Temperature gradient
Proceedings Papers

Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry

Available to Purchase

Joshua Bird, Patrick S. Keogh, Carl M. Sangan, Aaron A. Bowsher, Peter F. Crudgington, James A. Scobie
Proc. ASME. GT2024, Volume 10B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V10BT26A020, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128839
https://doi.org/10.1115/GT2024-128839
View Paper titled, Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry
Open the PDF for Rotordynamics of a Single-Stage Brush Seal in Isolation: The Effects of Variable Stiffness and Back Plate Geometry in another window
Topics: Damping, Geometry, Rotordynamics, Stiffness
Journal Articles

Purge–Mainstream Interactions in a Turbine Stage With Rotor Endwall Contouring

Available to Purchase
Alex W. Mesny, Oliver J. Pountney, James A. Scobie, Yan Sheng Li, Carl M. Sangan
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. September 2024, 146(9): 091007.
Paper No: TURBO-23-1332
https://doi.org/10.1115/1.4064843
Published Online: April 5, 2024
View Articletitled, Purge–Mainstream Interactions in a Turbine Stage With Rotor Endwall Contouring
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Topics: Flow (Dynamics), Rotors, Turbines, Blades, Vortices
Journal Articles

A Combined Experimental and Turbulence-Resolved Modeling Approach for Aeroengine Turbine Rim Seals

Open Access
Simon Vella, Peter Darby, Mauro Carnevale, James A. Scobie, Gary D. Lock, Clément Jarrossay, Francesco Salvatori, Damien Bonneau, Carl M. Sangan
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2024, 146(8): 081020.
Paper No: GTP-23-1656
https://doi.org/10.1115/1.4064803
Published Online: March 22, 2024
View Articletitled, A Combined Experimental and Turbulence-Resolved Modeling Approach for Aeroengine Turbine Rim Seals
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Topics: Computation, Flow (Dynamics), Leakage flows, Rotors, Stators, Turbines, Turbulence, Wheels, Modeling, Pressure
Journal Articles

Windage Torque Reduction in Low-Pressure Turbine Cavities Part II: Experimental and Numerical Results

Available to Purchase
Richard W. Jackson, Zhihui Li, Loizos Christodoulou, Stephen Ambrose, Carl M. Sangan, Richard Jefferson-Loveday, Gary D. Lock, James A. Scobie
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. June 2024, 146(6): 061005.
Paper No: TURBO-23-1214
https://doi.org/10.1115/1.4063876
Published Online: January 29, 2024
View Articletitled, Windage Torque Reduction in Low-Pressure Turbine Cavities Part II: Experimental and Numerical Results
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Topics: Cavities, Flow (Dynamics), Pressure, Torque, Wheels, Annulus, Stators, Rotors, Flow control, Turbines
Journal Articles

Windage Torque Reduction in Low-Pressure Turbine Cavities Part I: Concept Design and Numerical Investigations

Available to Purchase
Zhihui Li, Loizos Christodoulou, Richard Jefferson-Loveday, Stephen Ambrose, Richard Jackson, Gary D. Lock, Carl M. Sangan, James A. Scobie
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. June 2024, 146(6): 061004.
Paper No: TURBO-23-1161
https://doi.org/10.1115/1.4064224
Published Online: January 29, 2024
View Articletitled, Windage Torque Reduction in Low-Pressure Turbine Cavities Part I: Concept Design and Numerical Investigations
Open the PDF for Windage Torque Reduction in Low-Pressure Turbine Cavities Part I: Concept Design and Numerical Investigations in another window
Topics: Cavities, Design, Flow (Dynamics), Flow control, Pressure, Torque, Turbines, Cavity flows
Journal Articles

Fluid Dynamic Behavior of Conventional and Pressure Relieving Brush Seals

Available to Purchase
Joshua P. Bowen, Joshua J. Bird, Harry Cross, Matthew R. Jenkins, Aaron A. Bowsher, Peter F. Crudgington, Carl M. Sangan, James A. Scobie
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2024, 146(6): 061001.
Paper No: GTP-23-1369
https://doi.org/10.1115/1.4063775
Published Online: December 26, 2023
View Articletitled, Fluid Dynamic Behavior of Conventional and Pressure Relieving Brush Seals
Open the PDF for Fluid Dynamic Behavior of Conventional and Pressure Relieving Brush Seals in another window
Topics: Pressure, Leakage, Test facilities
Journal Articles

A Model of Mass and Heat Transfer for Disc Temperature Prediction in Open Compressor Cavities

Available to Purchase
Tom E. W. Nicholas, James A. Scobie, Gary D. Lock, Hui Tang
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2024, 146(4): 041001.
Paper No: TURBO-23-1238
https://doi.org/10.1115/1.4064082
Published Online: December 15, 2023
View Articletitled, A Model of Mass and Heat Transfer for Disc Temperature Prediction in Open Compressor Cavities
Open the PDF for A Model of Mass and Heat Transfer for Disc Temperature Prediction in Open Compressor Cavities in another window
Topics: Cavities, Disks, Flow (Dynamics), Heat transfer, Plumes (Fluid dynamics), Temperature, Compressors, Buoyancy
Journal Articles

Conjugate Modeling of a Closed Co-Rotating Compressor Cavity

Available to Purchase
James Parry, Hui Tang, James A. Scobie, Gary D. Lock, Mauro Carnevale
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2024, 146(5): 051007.
Paper No: GTP-23-1555
https://doi.org/10.1115/1.4063632
Published Online: December 8, 2023
View Articletitled, Conjugate Modeling of a Closed Co-Rotating Compressor Cavity
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Topics: Cavities, Disks, Flow (Dynamics), Fluids, Heat transfer, Modeling, Temperature, Compressors, Buoyancy, Simulation
Journal Articles

Dynamic Characterization of an Adaptive Film-Riding Seal

Available to Purchase
Joshua Bird, Patrick S. Keogh, Carl M. Sangan, Aaron A. Bowsher, Peter F. Crudgington, James A. Scobie
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2024, 146(1): 011017.
Paper No: GTP-23-1368
https://doi.org/10.1115/1.4063549
Published Online: November 21, 2023
View Articletitled, Dynamic Characterization of an Adaptive Film-Riding Seal
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Topics: Clearances (Engineering), Computer simulation, Damping, Fluid films, Pressure, Rotors, Stiffness, Modeling, Displacement, Pressure drop
Journal Articles

Experimental Investigation of Transient Flow Phenomena in Rotating Compressor Cavities

Available to Purchase
Mikolaj J. Pernak, Tom E. W. Nicholas, Jake T. Williams, Richard W. Jackson, Hui Tang, Gary D. Lock, James A. Scobie
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. December 2023, 145(12): 121005.
Paper No: TURBO-23-1143
https://doi.org/10.1115/1.4063507
Published Online: October 19, 2023
View Articletitled, Experimental Investigation of Transient Flow Phenomena in Rotating Compressor Cavities
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Topics: Cavities, Disks, Flow (Dynamics), Heat transfer, Temperature, Transients (Dynamics), Compressors, Steady state, Buoyancy
Proceedings Papers

A Model of Mass and Heat Transfer for Disc Temperature Prediction in Open Compressor Cavities

Available to Purchase

Thomas E. W. Nicholas, James A. Scobie, Gary D. Lock, Hui Tang
Proc. ASME. GT2023, Volume 7B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V07BT14A005, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102248
https://doi.org/10.1115/GT2023-102248
View Paper titled, A Model of Mass and Heat Transfer for Disc Temperature Prediction in Open Compressor Cavities
Open the PDF for A Model of Mass and Heat Transfer for Disc Temperature Prediction in Open Compressor Cavities in another window
Topics: Buoyancy, Cavities, Compressors, Disks, Flow (Dynamics), Heat transfer, Temperature