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Proceedings Papers

Oil Film Thickness Measurements on Surfaces Close to an Aero-Engine Ball Bearing Using Optical Techniques

Jee Loong Hee, R. Santhosh, Kathy Simmons, Graham Johnson, David Hann, Michael Walsh
Proc. ASME. GT2017, Volume 7A: Structures and Dynamics, V07AT34A017, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63813
https://doi.org/10.1115/GT2017-63813
View Paper titled, Oil Film Thickness Measurements on Surfaces Close to an Aero-Engine Ball Bearing Using Optical Techniques
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Topics: Aircraft engines, Ball bearings, Film thickness, Bearings, Stress, Flow (Dynamics), Engines, Knudsen number, Imaging, Gas turbines
Proceedings Papers

Experimental Investigation of Oil Shedding From an Aero-Engine Ball Bearing at Moderate Speeds

R. Santhosh, Jee Loong Hee, Kathy Simmons, Graham Johnson, David Hann, Michael Walsh
Proc. ASME. GT2017, Volume 7A: Structures and Dynamics, V07AT34A018, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63815
https://doi.org/10.1115/GT2017-63815
View Paper titled, Experimental Investigation of Oil Shedding From an Aero-Engine Ball Bearing at Moderate Speeds
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Topics: Aircraft engines, Ball bearings, Bearings, Stress, Engines, Flow (Dynamics), Knudsen number, Rotating disks, Design, Gas turbines
Proceedings Papers

Velocity Measurements in the Vicinity of the Exit and Inlet of a Spiral Bevel Gear Shroud

Kathy Simmons, Graham Johnson
Proc. ASME. GT2015, Volume 5C: Heat Transfer, V05CT15A031, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43549
https://doi.org/10.1115/GT2015-43549
View Paper titled, Velocity Measurements in the Vicinity of the Exit and Inlet of a Spiral Bevel Gear Shroud
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Topics: Spiral bevel gears, Velocity measurement, Flow (Dynamics), Gears, Computational fluid dynamics, Bevel gears, Boundary-value problems, Containment, Gas turbines, Laser Doppler anemometry
Journal Articles

Effect of Pressure and Oil Mist on Windage Power Loss of a Shrouded Spiral Bevel Gear

Kathy Simmons, Graham Johnson, Nikolas Wiedemann
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Gas Turbines: Aircraft Engine
J. Eng. Gas Turbines Power. August 2012, 134(8): 081202.
https://doi.org/10.1115/1.4005984
Published Online: June 29, 2012
View Article titled, Effect of Pressure and Oil Mist on Windage Power Loss of a Shrouded Spiral Bevel Gear
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Topics: Gears, Pressure, Sprays
Proceedings Papers

Effect of Pressure and Oil Mist on Windage Power Loss of a Shrouded Spiral Bevel Gear

Kathy Simmons, Graham Johnson, Nikolas Wiedemann
Proc. ASME. GT2011, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Wind Turbine Technology, 327-335, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-46426
https://doi.org/10.1115/GT2011-46426
View Paper titled, Effect of Pressure and Oil Mist on Windage Power Loss of a Shrouded Spiral Bevel Gear
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Topics: Pressure, Spiral bevel gears, Fluids, Gears, Density, Bevel gears, Gas turbines, Heat, Measurement systems, Mechanical drives
Proceedings Papers

Windage Power Losses From Spiral Bevel Gears With Varying Oil Flows and Shroud Configurations

Graham Johnson, Budi Chandra, Colin Foord, Kathy Simmons
Proc. ASME. GT2008, Volume 4: Heat Transfer, Parts A and B, 1415-1421, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-50424
https://doi.org/10.1115/GT2008-50424
View Paper titled, Windage Power Losses From Spiral Bevel Gears With Varying Oil Flows and Shroud Configurations
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Topics: Flow (Dynamics), Spiral bevel gears, Gears, Torque, Bevel gears, Design, Torque measurement, Aircraft engines, Engines, Fittings
Proceedings Papers

Experimental Investigations of Film Flows Around Obstacles

Johannes Kneer, Carol Eastwick, Armin Mu¨ller, Graham Johnson, Adam Robinson, Hans-Jo¨rg Bauer
Proc. ASME. GT2008, Volume 4: Heat Transfer, Parts A and B, 1461-1470, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-50630
https://doi.org/10.1115/GT2008-50630
View Paper titled, Experimental Investigations of Film Flows Around Obstacles
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Topics: Bearings, Film flow
Proceedings Papers

Experimental Investigation Into the Behaviour Within Flush Offtake Pipes

Helge Dagefo¨rde, Carol Eastwick, Adam Robinson, Graham Johnson, Sinisˇa Kontin, Hans-Jo¨rg Bauer
Proc. ASME. GT2008, Volume 4: Heat Transfer, Parts A and B, 1471-1481, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-50632
https://doi.org/10.1115/GT2008-50632
View Paper titled, Experimental Investigation Into the Behaviour Within Flush Offtake Pipes
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Topics: Pipes, Flow (Dynamics), Liquid films, Water, Aircraft engines, Fluids, Temperature, Visualization, Bearings, Circuits
Journal Articles

Windage Power Losses From Spiral Bevel Gears With Varying Oil Flows and Shroud Configurations

Graham Johnson, Budi Chandra, Colin Foord, Kathy Simmons
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2009, 131(4): 041019.
https://doi.org/10.1115/1.3072519
Published Online: July 13, 2009
View Article titled, Windage Power Losses From Spiral Bevel Gears With Varying Oil Flows and Shroud Configurations
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Topics: Flow (Dynamics), Gears, Torque, Spiral bevel gears
Proceedings Papers

Experimental Investigation Into Windage Power Loss From a Shrouded Spiral Bevel Gear

Graham Johnson, Kathy Simmons, Colin Foord
Proc. ASME. GT2007, Volume 6: Turbo Expo 2007, Parts A and B, 57-66, May 14–17, 2007
Publisher: American Society of Mechanical Engineers
Paper No: GT2007-27885
https://doi.org/10.1115/GT2007-27885
View Paper titled, Experimental Investigation Into Windage Power Loss From a Shrouded Spiral Bevel Gear
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Topics: Spiral bevel gears, Gears, Design, Bearings, Rotation, Aircraft engines, Cooling, Flow (Dynamics), Gas turbines, Heat
Proceedings Papers

The Effect of Obstacles in a Liquid Film

Carol Eastwick, Lucie Bertin, Graham Johnson
Proc. ASME. GT2006, Volume 3: Heat Transfer, Parts A and B, 1443-1452, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90520
https://doi.org/10.1115/GT2006-90520
View Paper titled, The Effect of Obstacles in a Liquid Film
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Topics: Bearings, Film flow, Liquid films, Waves, Flow (Dynamics), Shapes, Cooling, Film thickness, Heat transfer coefficients, Shear (Mechanics)
Journal Articles

Gear Windage: A Review

Carol N. Eastwick, Graham Johnson
Journal: Journal of Mechanical Design
Publisher: ASME
Article Type: Technology Review
J. Mech. Des. March 2008, 130(3): 034001.
https://doi.org/10.1115/1.2829983
Published Online: February 14, 2008
View Article titled, Gear Windage: A Review
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Topics: Gears