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Nicholas R. Atkins
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Proceedings Papers

Design and Analysis of a Liftfan for eVTOL Aircraft

Rory D. Hine, Dominic R. Cousins, Leo Maden, Samuel J. Walker, Nicholas R. Atkins, Samuel D. Grimshaw, James V. Taylor
Proc. ASME. GT2024, Volume 1: Aircraft Engine, V001T01A023, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-123904
https://doi.org/10.1115/GT2024-123904
View Paper titled, Design and Analysis of a Liftfan for eVTOL Aircraft
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Topics: Cooling, Design, Ducts, Electric vertical take-off and landing aircraft, Flight
Proceedings Papers

The Effect of Rotor Leakage Flows on Hot Gas Ingestion

Michael G. Dawson, Nicholas R. Atkins
Proc. ASME. GT2024, Volume 8: Heat Transfer: Internal Air Systems; Heat Transfer: Internal Cooling; Industrial and Cogeneration, V008T14A024, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129257
https://doi.org/10.1115/GT2024-129257
View Paper titled, The Effect of Rotor Leakage Flows on Hot Gas Ingestion
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Topics: Leakage flows, Rotors, Cavities, Flow (Dynamics), Leakage, Disks, Temperature, Gas turbines, Geometry, Space
Proceedings Papers

Transitional Flows Within Cooled HP Turbines

Christopher J. Clark, Nicholas R. Atkins, Mark Stokes, Raul Vazquez-Diaz
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A019, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124918
https://doi.org/10.1115/GT2024-124918
View Paper titled, Transitional Flows Within Cooled HP Turbines
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Topics: Flow (Dynamics), Turbines
Proceedings Papers

A Scalable Conjugate Heat Transfer Method Applied to Engine Transients

Neil H. E. Paul, Nicholas R. Atkins, Tobias Brandvik
Proc. ASME. GT2024, Volume 12C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V12CT32A052, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129297
https://doi.org/10.1115/GT2024-129297
View Paper titled, A Scalable Conjugate Heat Transfer Method Applied to Engine Transients
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Topics: Engines, Heat transfer, Transients (Dynamics), Fluids, Computational fluid dynamics, Boundary-value problems, Cavities, Finite element analysis, Inflow, Stability
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

The Effect of Circumferential Lengthscale on Hot Gas Ingestion

Michael G. Dawson, John J. Otter, Nicholas R. Atkins
Proc. ASME. GT2022, Volume 6B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V06BT14A018, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83345
https://doi.org/10.1115/GT2022-83345
View Paper titled, The Effect of Circumferential Lengthscale on Hot Gas Ingestion
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Topics: Annulus, Blades, Boundary-value problems, Cavities, Computer simulation, Engineering simulation, Numerical analysis, Pressure, Reynolds-averaged Navier–Stokes equations, Rotors
Proceedings Papers

A Rim Seal Ingress Model Based on Turbulent Transport

Svilen S. Savov, Nicholas R. Atkins
Proc. ASME. GT2017, Volume 5B: Heat Transfer, V05BT15A009, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63531
https://doi.org/10.1115/GT2017-63531
View Paper titled, A Rim Seal Ingress Model Based on Turbulent Transport
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Topics: Turbulence, Flow (Dynamics), Eddies (Fluid dynamics), Cavities, Geometry, Blades, Fittings, Pressure, Rotors, Shear (Mechanics)
Journal Articles

A Comparison of Single and Double Lip Rim Seal Geometries

Svilen S. Savov, Nicholas R. Atkins, Sumiu Uchida
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2017, 139(11): 112601.
Paper No: GTP-16-1545
https://doi.org/10.1115/1.4037027
Published Online: July 19, 2017
View Article titled, A Comparison of Single and Double Lip Rim Seal Geometries
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Topics: Blades, Cavities, Flow (Dynamics), Pressure, Rotors, Stators, Engines
Proceedings Papers

Comparison of Single and Double Lip Rim Seal Geometry

Svilen S. Savov, Nicholas R. Atkins, Sumiu Uchida
Proc. ASME. GT2016, Volume 5A: Heat Transfer, V05AT15A003, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56317
https://doi.org/10.1115/GT2016-56317
View Paper titled, Comparison of Single and Double Lip Rim Seal Geometry
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Topics: Blades, Cavities, Cavity flows, Engines, Flow (Dynamics), Geometry, Pressure, Reynolds number, Shear (Mechanics)
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 Article titled, 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

Flow in a Rotating Cavity With Axial Throughflow at Engine Representative Conditions

Nicholas R. Atkins, Vasudevan Kanjirakkad
Proc. ASME. GT2014, Volume 5C: Heat Transfer, V05CT16A041, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-27174
https://doi.org/10.1115/GT2014-27174
View Paper titled, Flow in a Rotating Cavity With Axial Throughflow at Engine Representative Conditions
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Topics: Cavities, Engines, Flow (Dynamics), Fluids, Reynolds number, Compressors, Disks, Heat transfer, Vortices, Aircraft engines
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
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
Proceedings Papers

An Investigation Into Numerical Analysis Alternatives for Predicting Re-Ingestion in Turbine Disc Rim Cavities

Antonio Guijarro Valencia, Jeffrey A. Dixon, Riccardo Da Soghe, Bruno Facchini, Peter E. J. Smith, Julien Muñoz, Daniel Eastwood, Christopher A. Long, Daniel D. Coren, Nicholas R. Atkins
Proc. ASME. GT2012, Volume 4: Heat Transfer, Parts A and B, 2025-2035, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68592
https://doi.org/10.1115/GT2012-68592
View Paper titled, An Investigation Into Numerical Analysis Alternatives for Predicting Re-Ingestion in Turbine Disc Rim Cavities
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Topics: Cavities, Disks, Numerical analysis, Turbines, Computational fluid dynamics, Cooling, Flow (Dynamics), Engines, Gas turbines, Modeling
Journal Articles

Turbine Aerodynamic Performance Measurement Under Nonadiabatic Conditions

Nicholas R. Atkins, Roger W. Ainsworth
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2012, 134(6): 061001.
https://doi.org/10.1115/1.4004857
Published Online: August 27, 2012
View Article titled, Turbine Aerodynamic Performance Measurement Under Nonadiabatic Conditions
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Topics: Blades, Enthalpy, Entropy, Flow (Dynamics), Heat flux, Heat transfer, Temperature, Turbines, Engines, Computational fluid dynamics
Journal Articles

Unsteady Effects on Transonic Turbine Blade-Tip Heat Transfer

Nicholas R. Atkins, Steven J. Thorpe, Roger W. Ainsworth
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2012, 134(6): 061002.
https://doi.org/10.1115/1.4004845
Published Online: August 27, 2012
View Article titled, Unsteady Effects on Transonic Turbine Blade-Tip Heat Transfer
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Topics: Blades, Heat flux, Pressure, Temperature, Heat transfer, Flow (Dynamics), Rotors, Turbines
Journal Articles

Turbine Blade Tip Heat Transfer in Low Speed and High Speed Flows

Andrew P. S. Wheeler, Nicholas R. Atkins, Li He
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2011, 133(4): 041025.
https://doi.org/10.1115/1.4002424
Published Online: April 26, 2011
View Article titled, Turbine Blade Tip Heat Transfer in Low Speed and High Speed Flows
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Topics: Blades, Flow (Dynamics), Heat transfer, Mach number, Computational fluid dynamics, Heat flux, Bubbles, Turbulence
Proceedings Papers

Turbine Blade Tip Heat Transfer in Low Speed and High Speed Flows

Andrew P. S. Wheeler, Nicholas R. Atkins, Li He
Proc. ASME. GT2009, Volume 3: Heat Transfer, Parts A and B, 349-359, June 8–12, 2009
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-59404
https://doi.org/10.1115/GT2009-59404
View Paper titled, Turbine Blade Tip Heat Transfer in Low Speed and High Speed Flows
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Topics: Flow (Dynamics), Heat transfer, Turbine blades, Mach number, Blades, Boundary layers, Bubbles, Computational fluid dynamics, Engines, Heat transfer coefficients
Proceedings Papers

The Effect of a Casing Step on the Over-Tip Aerothermodynamics of a Transonic HP Turbine Stage

Gregory A. Thomas, Nicholas R. Atkins, Steven J. Thorpe, Roger W. Ainsworth, Neil W. Harvey
Proc. ASME. GT2007, Volume 4: Turbo Expo 2007, Parts A and B, 597-608, May 14–17, 2007
Publisher: American Society of Mechanical Engineers
Paper No: GT2007-27780
https://doi.org/10.1115/GT2007-27780
View Paper titled, The Effect of a Casing Step on the Over-Tip Aerothermodynamics of a Transonic HP Turbine Stage
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Topics: Aerodynamics, Turbines, Heat flux, Pressure, Wall temperature, Annulus, Blades, Computational fluid dynamics, Engines, Fluids
Proceedings Papers

The Development of Aerodynamic Performance Measurements in a Transient Test Facility

Nicholas R. Atkins, Robert J. Miller, Roger W. Ainsworth
Proc. ASME. GT2004, Volume 5: Turbo Expo 2004, Parts A and B, 1325-1338, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-53813
https://doi.org/10.1115/GT2004-53813
View Paper titled, The Development of Aerodynamic Performance Measurements in a Transient Test Facility
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Topics: Test facilities, Transients (Dynamics), Flow (Dynamics), Turbines, Pressure, Testing, Engines, Enthalpy, Heat transfer, High pressure (Physics)