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Proceedings Papers

Experimental Investigation of Secondary Flows and Length Reduction for a Low-Pressure Compressor Transition Duct

D. Tsakmakidou, I. Mariah, A. D. Walker, C. Hall, H. Simpson
Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT35A005, June 7–11, 2021
Paper No: GT2021-58879
DOI: https://doi.org/10.1115/GT2021-58879
View Paper titled, Experimental Investigation of Secondary Flows and Length Reduction for a Low-Pressure Compressor Transition Duct
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Topics: Compressors, Ducts, Flow (Dynamics), Pressure, Engines, Boundary layers, Carbon dioxide, Design, Fuels, Rotors
Proceedings Papers

A Rapid Viscous-Inviscid Interaction Method for the Preliminary Design of S-Shaped Transition Ducts

A. Veyrat, J. F. Carrotte, A. D. Walker, C. Hall, H. Simpson
Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT34A026, June 7–11, 2021
Paper No: GT2021-59515
DOI: https://doi.org/10.1115/GT2021-59515
View Paper titled, A Rapid Viscous-Inviscid Interaction Method for the Preliminary Design of S-Shaped Transition Ducts
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Topics: Composite materials, Design, Ducts, Flow (Dynamics), Separation (Technology), Splines, Computational fluid dynamics, Shear stress, Boundary layer turbulence, Compressors
Proceedings Papers

Development of a CFD Based Methodology for Predicting Oil Auto-Ignition in Gas Turbine Bearing Chambers

A. Peyton-Bruhl, D. Belton, A. D. Walker, G. Snowsill, C. Young
Proc. ASME. GT2019, Volume 5B: Heat Transfer, V05BT15A013, June 17–21, 2019
Paper No: GT2019-92050
DOI: https://doi.org/10.1115/GT2019-92050
View Paper titled, Development of a CFD Based Methodology for Predicting Oil Auto-Ignition in Gas Turbine Bearing Chambers
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Topics: Bearings, Computational fluid dynamics, Gas turbines, Ignition, Drops, Temperature, Particulate matter, Design, Modeling, Air flow
Proceedings Papers

The Influence of Geometric and Aerodynamic Boundary Conditions on Fuel Injector Feed and External Aerodynamics for Lean Burn Combustors

Y. Li, P. A. Denman, A. D. Walker
Proc. ASME. GT2019, Volume 4B: Combustion, Fuels, and Emissions, V04BT04A056, June 17–21, 2019
Paper No: GT2019-92037
DOI: https://doi.org/10.1115/GT2019-92037
View Paper titled, The Influence of Geometric and Aerodynamic Boundary Conditions on Fuel Injector Feed and External Aerodynamics for Lean Burn Combustors
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Topics: Aerodynamics, Boundary-value problems, Combustion chambers, Fuel injectors, Flow (Dynamics), Annulus, Compressors, Air flow, Combustion systems, Flames
Proceedings Papers

The Influence of Fan Root Flow on the Aerodynamics of a Low-Pressure Compressor Transition Duct

A. D. Walker, I. Mariah, D. Tsakmakidou, H. Vadhvana, C. Hall
Proc. ASME. GT2019, Volume 2B: Turbomachinery, V02BT42A008, June 17–21, 2019
Paper No: GT2019-92048
DOI: https://doi.org/10.1115/GT2019-92048
View Paper titled, The Influence of Fan Root Flow on the Aerodynamics of a Low-Pressure Compressor Transition Duct
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Topics: Aerodynamics, Compressors, Ducts, Flow (Dynamics), Pressure, Engines, Rotors, Computational fluid dynamics, Design, Aircraft
Proceedings Papers

Impact of Upstream Boundary Conditions on Fuel Injector Performance in a Low TRL Reacting Flow Experimental Facility

M. A. Williams, J. F. Carrotte, A. J. Moran, A. D. Walker
Proc. ASME. GT2018, Volume 4A: Combustion, Fuels, and Emissions, V04AT04A049, June 11–15, 2018
Paper No: GT2018-75621
DOI: https://doi.org/10.1115/GT2018-75621
View Paper titled, Impact of Upstream Boundary Conditions on Fuel Injector Performance in a Low TRL Reacting Flow Experimental Facility
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Topics: Boundary-value problems, Flow (Dynamics), Fuel injectors, Emissions, Fuels, Compressors, Test facilities, Combustion systems, Computational fluid dynamics, Design
Proceedings Papers

The Aerodynamic Design of the Low Pressure Air Delivery Ducts for a Cooled Cooling Air System

A. Spanelis, A. D. Walker, P. A. Beecroft
Proc. ASME. GT2017, Volume 2B: Turbomachinery, V02BT42A007, June 26–30, 2017
Paper No: GT2017-63959
DOI: https://doi.org/10.1115/GT2017-63959
View Paper titled, The Aerodynamic Design of the Low Pressure Air Delivery Ducts for a Cooled Cooling Air System
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Topics: Cooling, Design, Ducts, Pressure, Engines, Heat exchangers, Computational fluid dynamics, Cycles, Compressors, Coolants
Proceedings Papers

Preliminary Investigation Into the Effects of a Compressor Rim Purge Flow on OGV/Pre-Diffuser and Combustion System Aerodynamics

A. D. Walker, B. Koli, P. A. Beecroft
Proc. ASME. GT2017, Volume 2B: Turbomachinery, V02BT42A008, June 26–30, 2017
Paper No: GT2017-63962
DOI: https://doi.org/10.1115/GT2017-63962
View Paper titled, Preliminary Investigation Into the Effects of a Compressor Rim Purge Flow on OGV/Pre-Diffuser and Combustion System Aerodynamics
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Topics: Aerodynamics, Combustion systems, Compressors, Diffusers, Flow (Dynamics), Turbines, Computational fluid dynamics, Guide vanes, Combustion chambers, Cooling
Proceedings Papers

Impact of a Cooled Cooling Air Installation on the External Aerodynamics of a Gas Turbine Combustion System

A. D. Walker, L. Guo
Proc. ASME. GT2015, Volume 4B: Combustion, Fuels and Emissions, V04BT04A009, June 15–19, 2015
Paper No: GT2015-43186
DOI: https://doi.org/10.1115/GT2015-43186
View Paper titled, Impact of a Cooled Cooling Air Installation on the External Aerodynamics of a Gas Turbine Combustion System
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Topics: Aerodynamics, Combustion systems, Cooling, Gas turbines, Diffusers, Combustion chambers, Cavities, Compressors, Engines, Flow (Dynamics)
Proceedings Papers

An Aggressive S-Shaped Compressor Transition Duct With Swirling Flow and Aerodynamic Lifting Struts

A. D. Walker, A. G. Barker, I. Mariah, G. L. Peacock, J. F. Carrotte, R. M. Northall
Proc. ASME. GT2014, Volume 2A: Turbomachinery, V02AT40A002, June 16–20, 2014
Paper No: GT2014-25844
DOI: https://doi.org/10.1115/GT2014-25844
View Paper titled, An Aggressive S-Shaped Compressor Transition Duct With Swirling Flow and Aerodynamic Lifting Struts
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Topics: Compressors, Ducts, Swirling flow, Struts (Engineering), Momentum, Computational fluid dynamics, Design, Design methodology, Flow (Dynamics), Flow separation
Proceedings Papers

The Impact of Compressor Exit Conditions on Fuel Injector Flows

C. L. Ford, J. F. Carrotte, A. D. Walker
Proc. ASME. GT2012, Volume 8: Turbomachinery, Parts A, B, and C, 1667-1677, June 11–15, 2012
Paper No: GT2012-68918
DOI: https://doi.org/10.1115/GT2012-68918
View Paper titled, The Impact of Compressor Exit Conditions on Fuel Injector Flows
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Topics: Compressors, Flow (Dynamics), Fuel injectors, Ejectors, Emissions, Air flow, Aircraft engines, Atmospheric pressure, Combustion systems, Computational fluid dynamics
Journal Articles

Integrated Outlet Guide Vane Design for an Aggressive S-Shaped Compressor Transition Duct

A. D. Walker, A. G. Barker, J. F. Carrotte, J. J. Bolger, M. J. Green
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. January 2013, 135(1): 011035.
Paper No: TURBO-11-1114
DOI: https://doi.org/10.1115/1.4006331
Published Online: October 31, 2012
View Article titled, Integrated Outlet Guide Vane Design for an Aggressive S-Shaped Compressor Transition Duct
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Topics: Compressors, Design, Ducts, Flow (Dynamics), Pressure, Rotors
Journal Articles

Aerodynamic Performance of a Coolant Flow Off-Take Downstream of an Outlet Guide Vane

C. A’Barrow, J. F. Carrotte, A. D. Walker, A. M. Rolt
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. January 2013, 135(1): 011006.
Paper No: TURBO-11-1115
DOI: https://doi.org/10.1115/1.4006332
Published Online: October 18, 2012
View Article titled, Aerodynamic Performance of a Coolant Flow Off-Take Downstream of an Outlet Guide Vane
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Topics: Flow (Dynamics), Pressure, Design, Compressors
Journal Articles

The Impact of Compressor Exit Conditions on Fuel Injector Flows

C. L. Ford, J. F. Carrotte, A. D. Walker
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Gas Turbines: Combustion, Fuels, And Emissions
J. Eng. Gas Turbines Power. November 2012, 134(11): 111504.
DOI: https://doi.org/10.1115/1.4007025
Published Online: September 28, 2012
View Article titled, The Impact of Compressor Exit Conditions on Fuel Injector Flows
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Topics: Compressors, Ejectors, Flow (Dynamics), Fuel injectors, Geometry, Wakes
Proceedings Papers

Numerical Design and Experimental Evaluation of an Aggressive S-Shaped Compressor Transition Duct With Bleed

A. D. Walker, A. G. Barker, J. F. Carrotte
Proc. ASME. GT2011, Volume 7: Turbomachinery, Parts A, B, and C, 151-161, June 6–10, 2011
Paper No: GT2011-45628
DOI: https://doi.org/10.1115/GT2011-45628
View Paper titled, Numerical Design and Experimental Evaluation of an Aggressive S-Shaped Compressor Transition Duct With Bleed
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Topics: Compressors, Design, Ducts, Flow (Dynamics), Engines, Pressure, Pressure gradient, Architecture, Boundary layers, Cooling
Proceedings Papers

Integrated OGV Design for an Aggressive S-Shaped Compressor Transition Duct

A. D. Walker, A. G. Barker, J. F. Carrotte, J. J. Bolger, M. J. Green
Proc. ASME. GT2011, Volume 7: Turbomachinery, Parts A, B, and C, 139-149, June 6–10, 2011
Paper No: GT2011-45627
DOI: https://doi.org/10.1115/GT2011-45627
View Paper titled, Integrated OGV Design for an Aggressive S-Shaped Compressor Transition Duct
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Topics: Compressors, Design, Ducts, Pressure, Flow (Dynamics), Geometry, Guide vanes, Rotors, Gas turbines, Probes
Proceedings Papers

Aerodynamic Performance of a Coolant Flow Off-Take Downstream of an OGV

C. A’Barrow, J. F. Carrotte, A. D. Walker, A. M. Rolt
Proc. ASME. GT2011, Volume 7: Turbomachinery, Parts A, B, and C, 187-199, June 6–10, 2011
Paper No: GT2011-45888
DOI: https://doi.org/10.1115/GT2011-45888
View Paper titled, Aerodynamic Performance of a Coolant Flow Off-Take Downstream of an OGV
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Topics: Coolants, Flow (Dynamics), Diffusion (Physics), Pressure, Aircraft engines, Blades, Compression, Cooling, Design, Gas turbines