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Journal Articles

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

Dimitra Tsakmakidou, Ian Mariah, A. Duncan Walker, Chris Hall, Harry Simpson

J. Eng. Gas Turbines Power. January 2022, 144(1): 011017.

Paper No: GTP-21-1353

DOI: https://doi.org/10.1115/1.4052086

Published Online: October 18, 2021

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Topics: Ducts, Flow (Dynamics), Rotors, Pressure, Probes, Compressors

Journal Articles

Aerodynamic Influence of a Bleed on the Last Stage of a Low-Pressure Compressor and S-Duct

Apostolos Spanelis, A. Duncan Walker

J. Turbomach. February 2022, 144(2): 021007.

Paper No: TURBO-20-1157

DOI: https://doi.org/10.1115/1.4052134

Published Online: September 27, 2021

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Topics: Compressors, Diffusion (Physics), Ducts, Flow (Dynamics), Pressure, Rotors, Geometry

Journal Articles

An Experimental, Aerodynamic Evaluation of Design Choices for a Low-Pressure Compressor Transition Duct

A. Duncan Walker, Ian Mariah, Chris Hall

J. Turbomach. September 2021, 143(9): 091004.

Paper No: TURBO-20-1386

DOI: https://doi.org/10.1115/1.4050598

Published Online: May 3, 2021

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Topics: Compressors, Design, Ducts, Flow (Dynamics), Pressure, Struts (Engineering), Rotors

Proceedings Papers

A Numerical Investigation Into Secondary Flows at the Inlet to a Low-Pressure Compressor Transition Duct

Dimitra Tsakmakidou, A. Duncan Walker, Chris Hall

Proc. ASME. GT2020, Volume 2D: Turbomachinery, V02DT36A021, September 21–25, 2020

Paper No: GT2020-16065

DOI: https://doi.org/10.1115/GT2020-16065

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Topics: Compressors, Computational fluid dynamics, Ducts, Flow (Dynamics), Pressure

Proceedings Papers

An Experimental, Aerodynamic Evaluation of Design Choices for a Low-Pressure Compressor Transition Duct

A. Duncan Walker, Ian Mariah, Chris Hall

Proc. ASME. GT2020, Volume 2D: Turbomachinery, V02DT36A022, September 21–25, 2020

Paper No: GT2020-16318

DOI: https://doi.org/10.1115/GT2020-16318

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Topics: Aerodynamics, Compressors, Design, Ducts, Pressure

Journal Articles

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

A. Duncan Walker, Ian Mariah, Dimitra Tsakmakidou, Hiren Vadhvana, Chris Hall

J. Turbomach. January 2020, 142(1): 011002.

Paper No: TURBO-19-1210

DOI: https://doi.org/10.1115/1.4045272

Published Online: December 14, 2019

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Topics: Boundary layers, Compressors, Computational fluid dynamics, Ducts, Flow (Dynamics), Pressure, Rotors, Wakes, Separation (Technology)

Journal Articles

Influence of Purge Flow Swirl at Exit to the High-Pressure Compressor on OGV/Pre-Diffuser and Combustion System Aerodynamics

A. Duncan Walker, Bharat Koli, Peter A. Beecroft

J. Turbomach. September 2019, 141(9): 091009.

Paper No: TURBO-18-1105

DOI: https://doi.org/10.1115/1.4043781

Published Online: June 14, 2019

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Topics: Computational fluid dynamics, Diffusers, Flow (Dynamics), Pressure, Combustion systems, Aerodynamics, Rotors, Compressors

Journal Articles

Improved Modeling Capabilities of the Airflow Within Turbine Case Cooling Systems Using Smart Porous Media

Yanling Li, A. Duncan Walker, John Irving

J. Eng. Gas Turbines Power. May 2019, 141(5): 051003.

Paper No: GTP-18-1212

DOI: https://doi.org/10.1115/1.4041933

Published Online: November 22, 2018

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Topics: Cooling, Flow (Dynamics), Impingement cooling, Manifolds, Porous materials, Turbines, Computational fluid dynamics, Junctions

Journal Articles

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

A. Duncan Walker, Bharat Koli, Liang Guo, Peter Beecroft, Marco Zedda

J. Eng. Gas Turbines Power. May 2017, 139(5): 051504.

Paper No: GTP-16-1199

DOI: https://doi.org/10.1115/1.4035228

Published Online: January 10, 2017

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Topics: Aerodynamics, Combustion chambers, Combustion systems, Cooling, Flow (Dynamics), Pipes, Pressure, Gas turbines, Engines, Diffusers

Proceedings Papers

Duct Aerodynamics for Intercooled Aero Gas Turbines: Constraints, Concepts and Design Methodology

A. Duncan Walker, Jonathan F. Carrotte, Andrew M. Rolt

Proc. ASME. GT2009, Volume 7: Turbomachinery, Parts A and B, 749-758, June 8–12, 2009

Paper No: GT2009-59612

DOI: https://doi.org/10.1115/GT2009-59612

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Topics: Aerodynamics, Design methodology, Ducts, Gas turbines, Design, Pressure, Aircraft engines, Compressors, Cooling, Cycles

Proceedings Papers

The Influence of Dump Gap on External Combustor Aerodynamics at High Fuel Injector Flow Rates

A. Duncan Walker, Jon F. Carrotte, James J. McGuirk

Proc. ASME. GT2008, Volume 6: Turbomachinery, Parts A, B, and C, 1723-1733, June 9–13, 2008

Paper No: GT2008-50271

DOI: https://doi.org/10.1115/GT2008-50271

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Topics: Aerodynamics, Combustion chambers, Flow (Dynamics), Fuel injectors, Diffusers, Rotors, Design, Annulus, Compressors, Carbon dioxide

Proceedings Papers

Compressor/Diffuser/Combustor Aerodynamic Interactions in Lean Module Combustors

A. Duncan Walker, Jon F. Carrotte, James J. McGuirk

Proc. ASME. GT2007, Volume 6: Turbo Expo 2007, Parts A and B, 1857-1864, May 14–17, 2007

Paper No: GT2007-27872

DOI: https://doi.org/10.1115/GT2007-27872

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Topics: Combustion chambers, Compressors, Diffusers, Flow (Dynamics), Ejectors, Annulus, Geometry, Rotors, Aerodynamics, Fuel injectors

Journal Articles

The Influence of Dump Gap on External Combustor Aerodynamics at High Fuel Injector Flow Rates

A. Duncan Walker, Jon F. Carrotte, James J. McGuirk

J. Eng. Gas Turbines Power. May 2009, 131(3): 031506.

DOI: https://doi.org/10.1115/1.3028230

Published Online: February 11, 2009

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Topics: Annulus, Combustion chambers, Flames, Flow (Dynamics), Fuel injectors, Pressure, Rotors, Aerodynamics, Compressors, Ejectors

Proceedings Papers

Experimental and Computational Study of Hybrid Diffusers for Gas Turbine Combustors

A. Duncan Walker, Paul A. Denman, James J. McGuirk

Proc. ASME. GT2003, Volume 2: Turbo Expo 2003, 311-320, June 16–19, 2003

Paper No: GT2003-38406

DOI: https://doi.org/10.1115/GT2003-38406

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Topics: Combustion chambers, Diffusers, Gas turbines, Flow (Dynamics), Diffusion (Physics), Pressure, Annulus, Boundary layers, Cooling, Design

Proceedings Papers

Enhanced External Aerodynamic Performance of a Generic Combustor Using an Integrated OGV/Pre-Diffuser Design Technique

A. Duncan Walker, Jon F. Carrotte, James J. McGuirk

Proc. ASME. GT2006, Volume 1: Combustion and Fuels, Education, 149-160, May 8–11, 2006

Paper No: GT2006-90184

DOI: https://doi.org/10.1115/GT2006-90184

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Topics: Combustion chambers, Diffusers, Engineering design processes, Design, Flow (Dynamics), Pressure, Annulus, Blades, Boundary layers, Combustion systems

Journal Articles

Compressor/Diffuser/Combustor Aerodynamic Interactions in Lean Module Combustors

A. Duncan Walker, Jon F. Carrotte, James J. McGuirk

J. Eng. Gas Turbines Power. January 2008, 130(1): 011504.

DOI: https://doi.org/10.1115/1.2747646

Published Online: January 9, 2008

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Topics: Annulus, Combustion chambers, Compressors, Diffusers, Ejectors, Flow (Dynamics), Fuel injectors, Geometry, Rotors, Pressure

Journal Articles

Enhanced External Aerodynamic Performance of a Generic Combustor Using An Integrated OGV/Prediffuser Design Technique

A. Duncan Walker, Jon F. Carrotte, James J. McGuirk

J. Eng. Gas Turbines Power. January 2007, 129(1): 80–87.

DOI: https://doi.org/10.1115/1.2364008

Published Online: February 1, 2006

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Topics: Annulus, Blades, Boundary layers, Combustion chambers, Design, Diffusers, Flames, Flow (Dynamics), Geometry, Pressure

Journal Articles

Experimental and Computational Study of Hybrid Diffusers for Gas Turbine Combustors

A. Duncan Walker, Paul A. Denman, James J. McGuirk

J. Eng. Gas Turbines Power. October 2004, 126(4): 717–725.

DOI: https://doi.org/10.1115/1.1772403

Published Online: November 24, 2004

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Topics: Diffusers, Flow (Dynamics), Gas turbines, Pressure, Combustion chambers

Journal citation

NARROW

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

Aerodynamic Influence of a Bleed on the Last Stage of a Low-Pressure Compressor and S-Duct

An Experimental, Aerodynamic Evaluation of Design Choices for a Low-Pressure Compressor Transition Duct

A Numerical Investigation Into Secondary Flows at the Inlet to a Low-Pressure Compressor Transition Duct

An Experimental, Aerodynamic Evaluation of Design Choices for a Low-Pressure Compressor Transition Duct

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

Influence of Purge Flow Swirl at Exit to the High-Pressure Compressor on OGV/Pre-Diffuser and Combustion System Aerodynamics

Improved Modeling Capabilities of the Airflow Within Turbine Case Cooling Systems Using Smart Porous Media

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

Duct Aerodynamics for Intercooled Aero Gas Turbines: Constraints, Concepts and Design Methodology

The Influence of Dump Gap on External Combustor Aerodynamics at High Fuel Injector Flow Rates

Compressor/Diffuser/Combustor Aerodynamic Interactions in Lean Module Combustors

The Influence of Dump Gap on External Combustor Aerodynamics at High Fuel Injector Flow Rates

Experimental and Computational Study of Hybrid Diffusers for Gas Turbine Combustors

Enhanced External Aerodynamic Performance of a Generic Combustor Using an Integrated OGV/Pre-Diffuser Design Technique

Compressor/Diffuser/Combustor Aerodynamic Interactions in Lean Module Combustors

Enhanced External Aerodynamic Performance of a Generic Combustor Using An Integrated OGV/Prediffuser Design Technique

Experimental and Computational Study of Hybrid Diffusers for Gas Turbine Combustors

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