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Proceedings Papers

Leakage Characteristics of a Stepped Balance Piston Labyrinth Seal in Supercritical CO2

Jason Wilkes, Natalie R. Smith, Karl Wygant, Abhay Patil, Chris Kulhanek

Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A023, June 13–17, 2022

Paper No: GT2022-83262

DOI: https://doi.org/10.1115/GT2022-83262

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Topics: Leakage, Pistons, Supercritical carbon dioxide, Thrust, Aerodynamics, Clearances (Engineering), Compressors, Computational fluid dynamics, Fluid-dynamic forces, Pressure

Proceedings Papers

Design and Testing of a 275 Bar 700 Degree Celsius Expander for an Integrally Geared Supercritical CO2 Compander

Jason Wilkes, Kyle Robinson, Karl Wygant, Rob Pelton, Jonathan Bygrave

Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A025, June 13–17, 2022

Paper No: GT2022-83284

DOI: https://doi.org/10.1115/GT2022-83284

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Topics: Design, Supercritical carbon dioxide, Testing, Compressors, Concentrating solar power, Creep, Fatigue, Gears, High pressure (Physics), High temperature

Proceedings Papers

Select Trade-Offs in Parallel Hybrid Turboprop Cycle Design

Michael Sielemann, Mavroudis D. Kavvalos, Nithish Selvan, Jim Claesson, Konstantinos Kyprianidis

Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T01A014, June 13–17, 2022

Paper No: GT2022-81629

DOI: https://doi.org/10.1115/GT2022-81629

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Topics: Cycles, Design, Tradeoffs, Gas turbines, Machinery, Aircraft, Electricity (Physics), Fuel consumption, Propellers, Turbines

Proceedings Papers

An Update on the Status of a Reduced Flow Test of a 10mw 700°C sCO2 Integrally Geared Compander

Kelsi M. Katcher, Jason Wilkes, Tim C. Allison

Proc. ASME. GT2021, Volume 10: Supercritical CO2, V010T30A001, June 7–11, 2021

Paper No: GT2021-02604

DOI: https://doi.org/10.1115/GT2021-02604

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Topics: Flow (Dynamics), Cycles, Design, Turbines, Compressors, Machinery, Supercritical carbon dioxide, Temperature, Testing, Thermodynamic power cycles

Proceedings Papers

Experimental Determination of Heat Transfer Coefficient on Impingement Cooled Gear Flanks: Validation of the Evaluation Method

Emre Ayan, Felix C. von Plehwe, Marc C. Keller, Christian Kromer, Corina Schwitzke, Hans-Jörg Bauer

Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT13A004, June 7–11, 2021

Paper No: GT2021-58838

DOI: https://doi.org/10.1115/GT2021-58838

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Topics: Evaluation methods, Gears, Heat transfer coefficients, Heat transfer, Temperature, Thermocouples, Impingement cooling, Algorithms, Design, Gear teeth

Proceedings Papers

Influence of the Tool Wear on the Quality and Service Life of Gears for the Geared Turbofan Technology Machined by Five-Axis Milling

Thomas Lakner, Christoph Zachert, René Greschert, Daniel Schraknepper, Thomas Bergs

Proc. ASME. GT2021, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V007T17A007, June 7–11, 2021

Paper No: GT2021-59172

DOI: https://doi.org/10.1115/GT2021-59172

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Topics: Gears, Machining, Milling, Service life (Equipment), Turbofans, Wear

Proceedings Papers

Thermodynamic and Mechanical Design Concept for Micro-Turbojet to Micro-Turboshaft Engine Conversion

Christoph Öttl, Reinhard Willinger

Proc. ASME. GT2020, Volume 8: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines, V008T20A005, September 21–25, 2020

Paper No: GT2020-14498

DOI: https://doi.org/10.1115/GT2020-14498

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Topics: Design engineering, Engines, Turbojets, Design, Turbines, Blades, Computational fluid dynamics, Cycles, Dimensions, Gears

Proceedings Papers

Physics-Based Thermal Model for Power Gearboxes in Geared Turbofan Engines

Soheil Jafari, Theoklis Nikolaidis, Albert S. J. van Heerden, Craig P. Lawson, David Bosak

Proc. ASME. GT2020, Volume 1: Aircraft Engine; Fans and Blowers, V001T01A021, September 21–25, 2020

Paper No: GT2020-14637

DOI: https://doi.org/10.1115/GT2020-14637

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Topics: Engines, Physics, Turbofans, Flight, Stress, Heat losses, Waste heat, Fuels, Aircraft engines, Emissions

Proceedings Papers

Analytical Model for the Heat Transfer in Impingement Cooled Spur Gears

Christian Kromer, Felix C. von Plehwe, Marc C. Keller, Corina Schwitzke, Hans-Jörg Bauer

Proc. ASME. GT2020, Volume 1: Aircraft Engine; Fans and Blowers, V001T01A023, September 21–25, 2020

Paper No: GT2020-14760

DOI: https://doi.org/10.1115/GT2020-14760

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Topics: Heat transfer, Spur gears, Gear teeth, Gear trains, Heat, Impingement cooling, Jet engines, Pressure, Turbines, Turbofans

Proceedings Papers

Novel Cyclo-Non-Stationary Indicators for Monitoring of Rotating Machinery Operating Under Speed and Load Varying Conditions

Alexandre Mauricio, Dustin Helm, Markus Timusk, Jerome Antoni, Konstantinos Gryllias

Proc. ASME. GT2020, Volume 5: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage, V005T05A018, September 21–25, 2020

Paper No: GT2020-15245

DOI: https://doi.org/10.1115/GT2020-15245

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Topics: Machinery, Stress, Signals, Condition monitoring, Failure, Maintenance, Bearings, Damage, Density, Excitation

Proceedings Papers

Commercialization and Fleet Experience of the 7/9HA Gas Turbine Combined Cycle

Christian Vandervort, David Leach, David Walker, Jerry Sasser

Proc. ASME. GT2019, Volume 3: Coal, Biomass, Hydrogen, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems, V003T08A006, June 17–21, 2019

Paper No: GT2019-91594

DOI: https://doi.org/10.1115/GT2019-91594

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Topics: Combined cycles, Gas turbines, Stress, Industrial gases, Power stations, Turbines, Carbon, Combined cycle power stations, Emissions, Energy generation

Proceedings Papers

Static Stiffness Measurements for a Thrust Collar Used in an Integrally Geared Compressor

Thomas Kerr, Adolfo Delgado, Dara Childs

Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A013, June 17–21, 2019

Paper No: GT2019-90488

DOI: https://doi.org/10.1115/GT2019-90488

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Topics: Compressors, Stiffness, Thrust, Stress, Particle spin, Rotation, Spin (Aerodynamics), Deflection, Cables, Gears

Proceedings Papers

Diagnostics of Fatigue Crack in the Shaft Using Spectral Kurtosis

Sagi Rathna Prasad, A. S. Sekhar

Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT31A004, June 17–21, 2019

Paper No: GT2019-90373

DOI: https://doi.org/10.1115/GT2019-90373

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Topics: Fatigue cracks, Rotors, Stress, Vibration, Accelerometers, ASTM International, Bearings, Failure, Gears, Laser Doppler vibrometers

Proceedings Papers

Vibration Characteristics of Rotor System Considering Gear Meshing

Jie Hong, XiRu Xu, LiMing Jiang, YanHong Ma

Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT33A009, June 17–21, 2019

Paper No: GT2019-91445

DOI: https://doi.org/10.1115/GT2019-91445

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Topics: Displacement, Gears, Rotors, Vibration

Proceedings Papers

Investigation of Steam Turbine Warm-Keeping by Use of Air

Dennis Toebben, Piotr Luczynski, Manfred Wirsum, Wolfgang F. D. Mohr, Klaus Helbig

Proc. ASME. GT2019, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T29A017, June 17–21, 2019

Paper No: GT2019-90761

DOI: https://doi.org/10.1115/GT2019-90761

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Topics: Steam turbines, Turbines, Blades, Temperature, Flow (Dynamics), Heat transfer, Power stations, Rotors, Steam, Boundary-value problems

Proceedings Papers

The Effect of Blade Deflections on the Torsional Dynamic of a Wind Turbine

Juan Jauregui, Diego Cárdenas, Luis Morales, Miguel Martinez, Jovan Basaldua

Proc. ASME. GT2019, Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy, V009T48A007, June 17–21, 2019

Paper No: GT2019-91046

DOI: https://doi.org/10.1115/GT2019-91046

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Topics: Blades, Deflection, Wind turbines, Torque, Dynamic models, Generators, Vibration, Wind, Excitation, Mechanical drives

Proceedings Papers

Condition Monitoring of Wind Turbine Planetary Gearboxes Under Different Operating Conditions

Alexandre Mauricio, Shuangwen Sheng, Konstantinos Gryllias

Proc. ASME. GT2019, Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy, V009T48A008, June 17–21, 2019

Paper No: GT2019-91136

DOI: https://doi.org/10.1115/GT2019-91136

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Topics: Condition monitoring, Wind turbines, Bearings, Machinery, Mechanical drives, Stress, Vibration, Electromagnetic spectrum, Filtration, Internet of things

Proceedings Papers

Incipient Fault Diagnosis of the Planetary Gearbox Based on Improved Variational Mode Decomposition and Frequency-Weighted Energy Operator

Hongkun Li, Chaoge Wang, Jiayu Ou

Proc. ASME. GT2019, Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy, V009T48A003, June 17–21, 2019

Paper No: GT2019-90572

DOI: https://doi.org/10.1115/GT2019-90572

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Topics: Fault diagnosis, Mechanical drives, Signals, Accidents, Algorithms, Failure, Feature extraction, Gears, Helicopters, Petrochemicals

Proceedings Papers

Numerical Investigation of Two Phase Flow in a Dual Drive Booster (DDB)

Arun Prabhakar, Stephen Ambrose, Herve Morvan

Proc. ASME. GT2019, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Honors and Awards, V001T01A006, June 17–21, 2019

Paper No: GT2019-90347

DOI: https://doi.org/10.1115/GT2019-90347

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Topics: Aircraft, Cutting, Engine design, Engineering simulation, Engines, Flow (Dynamics), Fluids, Gears, Geometry, High pressure (Physics)

Proceedings Papers

Load Independent Losses of an Aeroengine Epicyclic Power Gear Train: Numerical Investigation

Cosimo Bianchini, Riccardo Da Soghe, Lorenzo Giannini, Tommaso Fondelli, Daniele Massini, Bruno Facchini, Jacopo D’Errico

Proc. ASME. GT2019, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Honors and Awards, V001T01A020, June 17–21, 2019

Paper No: GT2019-91309

DOI: https://doi.org/10.1115/GT2019-91309

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Topics: Gear trains, Stress, Gears, Computation, Engines, Fluids, Design, Disks, Energy dissipation, Engineering simulation

NARROW

Leakage Characteristics of a Stepped Balance Piston Labyrinth Seal in Supercritical CO2

Design and Testing of a 275 Bar 700 Degree Celsius Expander for an Integrally Geared Supercritical CO2 Compander

Select Trade-Offs in Parallel Hybrid Turboprop Cycle Design

An Update on the Status of a Reduced Flow Test of a 10mw 700°C sCO2 Integrally Geared Compander

Experimental Determination of Heat Transfer Coefficient on Impingement Cooled Gear Flanks: Validation of the Evaluation Method

Influence of the Tool Wear on the Quality and Service Life of Gears for the Geared Turbofan Technology Machined by Five-Axis Milling

Thermodynamic and Mechanical Design Concept for Micro-Turbojet to Micro-Turboshaft Engine Conversion

Physics-Based Thermal Model for Power Gearboxes in Geared Turbofan Engines

Analytical Model for the Heat Transfer in Impingement Cooled Spur Gears

Novel Cyclo-Non-Stationary Indicators for Monitoring of Rotating Machinery Operating Under Speed and Load Varying Conditions

Commercialization and Fleet Experience of the 7/9HA Gas Turbine Combined Cycle

Static Stiffness Measurements for a Thrust Collar Used in an Integrally Geared Compressor

Diagnostics of Fatigue Crack in the Shaft Using Spectral Kurtosis

Vibration Characteristics of Rotor System Considering Gear Meshing

Investigation of Steam Turbine Warm-Keeping by Use of Air

The Effect of Blade Deflections on the Torsional Dynamic of a Wind Turbine

Condition Monitoring of Wind Turbine Planetary Gearboxes Under Different Operating Conditions

Incipient Fault Diagnosis of the Planetary Gearbox Based on Improved Variational Mode Decomposition and Frequency-Weighted Energy Operator

Numerical Investigation of Two Phase Flow in a Dual Drive Booster (DDB)

Load Independent Losses of an Aeroengine Epicyclic Power Gear Train: Numerical Investigation

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