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Proceedings Papers

Aerodynamic Damping of Last Stage Rotating Blades of Low Pressure Steam Turbine Determined From Vibration Test Data

Philipp Doll, Stefan Winkelmann, Fabian F. Müller, Damian M. Vogt, Jens Aschenbruck
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT21A013, June 13–17, 2022
Paper No: GT2022-81979
DOI: https://doi.org/10.1115/GT2022-81979
View Paper titled, Aerodynamic Damping of Last Stage Rotating Blades of Low Pressure Steam Turbine Determined From Vibration Test Data
Click here to open pdf in another window PDF for Aerodynamic Damping of Last Stage Rotating Blades of Low Pressure Steam Turbine Determined From Vibration Test Data
Topics: Damping, Pressure, Rotating blades, Steam turbines, Vibration tests, Blades, Flow (Dynamics), Signals, Stress, Turbines
Proceedings Papers

Efficient Forced Response Analysis for Asymmetric Vane Spacing

Benedict Geihe, Christian Frey, Graham Ashcroft
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT21A022, June 13–17, 2022
Paper No: GT2022-82983
DOI: https://doi.org/10.1115/GT2022-82983
View Paper titled, Efficient Forced Response Analysis for Asymmetric Vane Spacing
Click here to open pdf in another window PDF for Efficient Forced Response Analysis for Asymmetric Vane Spacing
Topics: Blades, Engineering simulation, Engines, Excitation, Fluctuations (Physics), Fourier transforms, Inflow, Rotors, Simulation, Turbines
Proceedings Papers

Fracture Mechanics-Based Structural Integrity Assessment of Aero-Engine Turbine Disks Under Overspeed Conditions

Jiangchao Zhu, Mauro Madia, Michael Schurig, Hartmut Schlums, Uwe Zerbst
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT24A004, June 13–17, 2022
Paper No: GT2022-79925
DOI: https://doi.org/10.1115/GT2022-79925
View Paper titled, Fracture Mechanics-Based Structural Integrity Assessment of Aero-Engine Turbine Disks Under Overspeed Conditions
Click here to open pdf in another window PDF for Fracture Mechanics-Based Structural Integrity Assessment of Aero-Engine Turbine Disks Under Overspeed Conditions
Topics: Aircraft engines, Disks, Fracture (Materials), Fracture mechanics, Turbines
Proceedings Papers

Effect of Bristle Diameter on Operational Modal Assessment and Seating Load of Brush Seals

Ertuğrul Tolga Duran
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT22A001, June 13–17, 2022
Paper No: GT2022-78289
DOI: https://doi.org/10.1115/GT2022-78289
View Paper titled, Effect of Bristle Diameter on Operational Modal Assessment and Seating Load of Brush Seals
Click here to open pdf in another window PDF for Effect of Bristle Diameter on Operational Modal Assessment and Seating Load of Brush Seals
Topics: Stress, Turbines, Engineering simulation, Simulation, Stability, Durability, Finite element analysis, Pressure, Clearances (Engineering), Design
Proceedings Papers

Non-Linear Numerical Simulation of Pre-Loaded Turbine Blades With Frictional Shroud Contact Under Dynamic Conditions

Hugo de Filippis, Fabrice Thouverez, Laurent Blanc, Patrick Girard, Fabrice Chevillot
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A003, June 13–17, 2022
Paper No: GT2022-79918
DOI: https://doi.org/10.1115/GT2022-79918
View Paper titled, Non-Linear Numerical Simulation of Pre-Loaded Turbine Blades With Frictional Shroud Contact Under Dynamic Conditions
Click here to open pdf in another window PDF for Non-Linear Numerical Simulation of Pre-Loaded Turbine Blades With Frictional Shroud Contact Under Dynamic Conditions
Topics: Blades, Computer simulation, Friction, Turbine blades, Manufacturing, Torsion, Turbines, Geometry, Pressure, Computer software
Proceedings Papers

Study on Blade Vibration Alleviation in a Nozzleless Radial Turbine via Casing Treatment

Lei Pan, Mingyang Yang, Shota Murae, Wataru Sato, Naoto Shimohara, Akihiro Yamagata
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT21A017, June 13–17, 2022
Paper No: GT2022-82368
DOI: https://doi.org/10.1115/GT2022-82368
View Paper titled, Study on Blade Vibration Alleviation in a Nozzleless Radial Turbine via Casing Treatment
Click here to open pdf in another window PDF for Study on Blade Vibration Alleviation in a Nozzleless Radial Turbine via Casing Treatment
Topics: Blades, High cycle fatigue, Turbines, Vibration
Proceedings Papers

Fully Coupled Analysis of Flutter Induced Limit Cycles: Frequency vs. Time Domain Methods

Christian Berthold, Johann Groß, Christian Frey, Malte Krack
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT21A001, June 13–17, 2022
Paper No: GT2022-77999
DOI: https://doi.org/10.1115/GT2022-77999
View Paper titled, Fully Coupled Analysis of Flutter Induced Limit Cycles: Frequency vs. Time Domain Methods
Click here to open pdf in another window PDF for Fully Coupled Analysis of Flutter Induced Limit Cycles: Frequency vs. Time Domain Methods
Topics: Flutter (Aerodynamics), Limit cycles, Fluid structure interaction, Oscillations, Blades, Friction, Vibration, Aircraft engines, Boundary-value problems, Damping
Proceedings Papers

Mistuning and Damping of a Radial Turbine Wheel. Part 2: Implementation and Validation of Intentional Mistuning

Alex Nakos, Bernd Beirow, Arthur Zobel
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A006, June 13–17, 2022
Paper No: GT2022-80643
DOI: https://doi.org/10.1115/GT2022-80643
View Paper titled, Mistuning and Damping of a Radial Turbine Wheel. Part 2: Implementation and Validation of Intentional Mistuning
Click here to open pdf in another window PDF for Mistuning and Damping of a Radial Turbine Wheel. Part 2: Implementation and Validation of Intentional Mistuning
Topics: Blades, Damping, Turbines, Vibration, Wheels, Design, Manufacturing, Accounting, Exhaust systems, Free vibrations
Proceedings Papers

Research on the Nonlinear Behavior of the Turbine Rotor Assembled by Rabbet Joints

Zhuoluo Han, Yifeng Li, Yongfeng Wang, Jie Hong
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT26A013, June 13–17, 2022
Paper No: GT2022-82784
DOI: https://doi.org/10.1115/GT2022-82784
View Paper titled, Research on the Nonlinear Behavior of the Turbine Rotor Assembled by Rabbet Joints
Click here to open pdf in another window PDF for Research on the Nonlinear Behavior of the Turbine Rotor Assembled by Rabbet Joints
Topics: Rotors, Stiffness, Turbines, Dynamic response, Finite element analysis, Mechanical properties, Aircraft engines, Compression, Damage, Dynamic models
Proceedings Papers

Robust Probabilistic Analysis of Deterioration-Induced Aeroelasticity in an Axial Turbine

Lennart Stania, Joerg R. Seume
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT25A006, June 13–17, 2022
Paper No: GT2022-82628
DOI: https://doi.org/10.1115/GT2022-82628
View Paper titled, Robust Probabilistic Analysis of Deterioration-Induced Aeroelasticity in an Axial Turbine
Click here to open pdf in another window PDF for Robust Probabilistic Analysis of Deterioration-Induced Aeroelasticity in an Axial Turbine
Topics: Aeroelasticity, Turbines, Blades, Engineering simulation, Sensitivity analysis, Simulation, Vibration, Damping, High cycle fatigue, Airfoils
Proceedings Papers

Innovative Expanders for Supercritical Carbon Dioxide Cycles

Alessandro Perri, Avinash Renuke, Alberto Traverso
Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A020, June 13–17, 2022
Paper No: GT2022-83116
DOI: https://doi.org/10.1115/GT2022-83116
View Paper titled, Innovative Expanders for Supercritical Carbon Dioxide Cycles
Click here to open pdf in another window PDF for Innovative Expanders for Supercritical Carbon Dioxide Cycles
Topics: Computational fluid dynamics, Cycles, Supercritical carbon dioxide, Turbines, Turbomachinery
Proceedings Papers

Specific Speed Considerations for Inward Flow Radial Supercritical CO 2 Turbines

Syed J. Hoque, Pramod Kumar, Pramod Chandra Gopi
Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A011, June 13–17, 2022
Paper No: GT2022-82090
DOI: https://doi.org/10.1115/GT2022-82090
View Paper titled, Specific Speed Considerations for Inward Flow Radial Supercritical CO 2 Turbines
Click here to open pdf in another window PDF for Specific Speed Considerations for Inward Flow Radial Supercritical CO 2 Turbines
Topics: Coriolis force, Design, Flow (Dynamics), Supercritical carbon dioxide, Turbines, Gas turbines, Blades, Rotors, Boundary-value problems, Computational fluid dynamics
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
View Paper titled, Leakage Characteristics of a Stepped Balance Piston Labyrinth Seal in Supercritical CO2
Click here to open pdf in another window PDF for Leakage Characteristics of a Stepped Balance Piston Labyrinth Seal in Supercritical CO2
Topics: Leakage, Pistons, Supercritical carbon dioxide, Thrust, Aerodynamics, Clearances (Engineering), Compressors, Computational fluid dynamics, Fluid-dynamic forces, Pressure
Proceedings Papers

Influence of Geometric Parameters for a 100 kW Inward Flow Radial Supercritical CO 2 Turbine

Syed J. Hoque, Pramod Kumar, Pramod Chandra Gopi
Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A012, June 13–17, 2022
Paper No: GT2022-82145
DOI: https://doi.org/10.1115/GT2022-82145
View Paper titled, Influence of Geometric Parameters for a 100 kW Inward Flow Radial Supercritical CO 2 Turbine
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Topics: Coriolis force, Design, Flow (Dynamics), Supercritical carbon dioxide, Turbines
Proceedings Papers

Integrated Aerodynamic and Structural Blade Shape Optimisation of Axial Turbines Operating With Supercritical Carbon Dioxide Blended With Dopants

Abdelrahman S. Abdeldayem, Martin T. White, Andrea Paggini, Marco Ruggiero, Abdulnaser I. Sayma
Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A004, June 13–17, 2022
Paper No: GT2022-81223
DOI: https://doi.org/10.1115/GT2022-81223
View Paper titled, Integrated Aerodynamic and Structural Blade Shape Optimisation of Axial Turbines Operating With Supercritical Carbon Dioxide Blended With Dopants
Click here to open pdf in another window PDF for Integrated Aerodynamic and Structural Blade Shape Optimisation of Axial Turbines Operating With Supercritical Carbon Dioxide Blended With Dopants
Topics: Blades, Optimization, Shape optimization, Shapes, Supercritical carbon dioxide, Turbines
Proceedings Papers

Design of an Additively Manufactured Recuperator With 800 °C Inlet Temperature for sCO2 Power Cycle Application

Michael Marshall, Meysam Akbari, Ji-Cheng Zhao, Kevin Hoopes
Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A015, June 13–17, 2022
Paper No: GT2022-82301
DOI: https://doi.org/10.1115/GT2022-82301
View Paper titled, Design of an Additively Manufactured Recuperator With 800 °C Inlet Temperature for sCO2 Power Cycle Application
Click here to open pdf in another window PDF for Design of an Additively Manufactured Recuperator With 800 °C Inlet Temperature for sCO2 Power Cycle Application
Topics: Additive manufacturing, Design, Temperature, Thermodynamic power cycles, Flow (Dynamics), Heat transfer, Lasers, Containment, Creep, Heat exchangers
Proceedings Papers

Attributes of Bi-Directional Turbomachinery for Pumped Thermal Energy Storage

J. D. Chiapperi, E. M. Greitzer, C. S. Tan
Proc. ASME. GT2022, Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V10AT29A012, June 13–17, 2022
Paper No: GT2022-81016
DOI: https://doi.org/10.1115/GT2022-81016
View Paper titled, Attributes of Bi-Directional Turbomachinery for Pumped Thermal Energy Storage
Click here to open pdf in another window PDF for Attributes of Bi-Directional Turbomachinery for Pumped Thermal Energy Storage
Topics: Thermal energy storage, Turbomachinery, Blades, Energy storage, Optimization, Compressors, Computation, Conceptual design, Cycles, Design
Proceedings Papers

Improvement of the Semi-Analytical Model of a Tesla Disc Turbine by the Correction of the Velocity Profile

Krzysztof Rusin, Emad Hasani Malekshah, Włodzimierz Wróblewski, Sebastian Rulik
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT35A016, June 13–17, 2022
Paper No: GT2022-83879
DOI: https://doi.org/10.1115/GT2022-83879
View Paper titled, Improvement of the Semi-Analytical Model of a Tesla Disc Turbine by the Correction of the Velocity Profile
Click here to open pdf in another window PDF for Improvement of the Semi-Analytical Model of a Tesla Disc Turbine by the Correction of the Velocity Profile
Topics: Computational fluid dynamics, Disks, Theorems (Mathematics), Turbines
Proceedings Papers

On the Influence of Stator-Rotor Radial Gap Size on the Fluid-Dynamic Performance of Mini-ORC Supersonic Turbines

Alessandro Cappiello, Matteo Majer, Raffaele Tuccillo, Matteo Pini
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT35A015, June 13–17, 2022
Paper No: GT2022-83309
DOI: https://doi.org/10.1115/GT2022-83309
View Paper titled, On the Influence of Stator-Rotor Radial Gap Size on the Fluid-Dynamic Performance of Mini-ORC Supersonic Turbines
Click here to open pdf in another window PDF for On the Influence of Stator-Rotor Radial Gap Size on the Fluid-Dynamic Performance of Mini-ORC Supersonic Turbines
Topics: Fluids, Organic Rankine cycle, Rotors, Stators, Turbines, Flow (Dynamics), High temperature, Inflow, Machinery, Computation
Proceedings Papers

Effects of Ribbed Surfaces on Profile Losses of Low-Pressure-Turbine Blades

M. Dellacasagrande, D. Lengani, D. Simoni, M. Ubaldi, F. Bertini
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A029, June 13–17, 2022
Paper No: GT2022-82875
DOI: https://doi.org/10.1115/GT2022-82875
View Paper titled, Effects of Ribbed Surfaces on Profile Losses of Low-Pressure-Turbine Blades
Click here to open pdf in another window PDF for Effects of Ribbed Surfaces on Profile Losses of Low-Pressure-Turbine Blades
Topics: Blades, Pressure, Turbines, Cascades (Fluid dynamics), Flat plates, Boundary layers, Dimensions, Geometry, Inflow, Pressure gradient