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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

Evaluating the Aerodynamic Damping at Shock Wave Boundary Layer Interacting Flow Conditions With Harmonic Balance

Jan Philipp Heners, Thomas Carraro, Christian Frey, Björn Grüber
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, V08AT21A007, June 13–17, 2022
Paper No: GT2022-81689
DOI: https://doi.org/10.1115/GT2022-81689
View Paper titled, Evaluating the Aerodynamic Damping at Shock Wave Boundary Layer Interacting Flow Conditions With Harmonic Balance
Click here to open pdf in another window PDF for Evaluating the Aerodynamic Damping at Shock Wave Boundary Layer Interacting Flow Conditions With Harmonic Balance
Topics: Boundary layers, Damping, Flow (Dynamics), Shock waves, Reynolds-averaged Navier–Stokes equations, Shock (Mechanics), Annulus, Compressors, Flutter (Aerodynamics), High pressure (Physics)
Proceedings Papers

Experimental Investigation Into Oil Shedding From a Rotating Cup Geometry

Paloma Paleo Cageao, Kathy Johnson, Stephen Ambrose, Rajab Omar
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, V08AT22A010, June 13–17, 2022
Paper No: GT2022-82195
DOI: https://doi.org/10.1115/GT2022-82195
View Paper titled, Experimental Investigation Into Oil Shedding From a Rotating Cup Geometry
Click here to open pdf in another window PDF for Experimental Investigation Into Oil Shedding From a Rotating Cup Geometry
Topics: Design, Disks, Drops, Flow (Dynamics), Geometry, Rotating disks, Rotation, Turbulence
Proceedings Papers

Experimental Investigation Into Oil Film Thickness and Behaviour Near an Aero-Engine Bearing

Avick Sinha, David Hann, Kathy Johnson, Michael Walsh
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, V08AT22A009, June 13–17, 2022
Paper No: GT2022-82180
DOI: https://doi.org/10.1115/GT2022-82180
View Paper titled, Experimental Investigation Into Oil Film Thickness and Behaviour Near an Aero-Engine Bearing
Click here to open pdf in another window PDF for Experimental Investigation Into Oil Film Thickness and Behaviour Near an Aero-Engine Bearing
Topics: Aircraft engines, Bearings, Film thickness, Flow (Dynamics), Stress, Waves, Computational fluid dynamics, Cooling, Engine design, Flight
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

Negative Centering Forces of Wet-Gas Hole-Pattern Seals at Low Excitation Frequencies

Min Zhang, Dara W. Childs
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, V08AT22A024, June 13–17, 2022
Paper No: GT2022-83504
DOI: https://doi.org/10.1115/GT2022-83504
View Paper titled, Negative Centering Forces of Wet-Gas Hole-Pattern Seals at Low Excitation Frequencies
Click here to open pdf in another window PDF for Negative Centering Forces of Wet-Gas Hole-Pattern Seals at Low Excitation Frequencies
Topics: Excitation, Pressure, Stiffness, Compression, Damping, Dimensions, Flow (Dynamics), Leakage, Testing
Proceedings Papers

Circumferentially Grooved Seal Flow Field Analysis Based on Effective Film Thickness to Improve Bulk Flow Models

Nathaniel Gibbons, Cori Watson-Kassa, Christopher Goyne, Minhui He
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, V08AT22A005, June 13–17, 2022
Paper No: GT2022-81010
DOI: https://doi.org/10.1115/GT2022-81010
View Paper titled, Circumferentially Grooved Seal Flow Field Analysis Based on Effective Film Thickness to Improve Bulk Flow Models
Click here to open pdf in another window PDF for Circumferentially Grooved Seal Flow Field Analysis Based on Effective Film Thickness to Improve Bulk Flow Models
Topics: Film thickness, Flow (Dynamics), Computational fluid dynamics, Modeling, Reynolds number, Shear stress, Engineering simulation, Leakage, Physics, Rotors
Proceedings Papers

Mistuning Effects on Aero-Elastic Stability of Civil Transonic Fan Blades

Bo Lian, Xiaocheng Zhu, Zhaohui Du
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, V08AT21A005, June 13–17, 2022
Paper No: GT2022-80613
DOI: https://doi.org/10.1115/GT2022-80613
View Paper titled, Mistuning Effects on Aero-Elastic Stability of Civil Transonic Fan Blades
Click here to open pdf in another window PDF for Mistuning Effects on Aero-Elastic Stability of Civil Transonic Fan Blades
Topics: Blades, Damping, Eigenvalues, Flutter (Aerodynamics), Stability, Design, Commercial air transport, Engineering simulation, Engines, Errors
Proceedings Papers

Influence of the Contact Interfaces on the Dynamics and Power Flow Behavior of the Bolted Structure

Yongfeng Wang, Yanhong Ma, Jie Hong, Giuseppe Battiato, Christian Maria Firrone
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A027, June 13–17, 2022
Paper No: GT2022-82840
DOI: https://doi.org/10.1115/GT2022-82840
View Paper titled, Influence of the Contact Interfaces on the Dynamics and Power Flow Behavior of the Bolted Structure
Click here to open pdf in another window PDF for Influence of the Contact Interfaces on the Dynamics and Power Flow Behavior of the Bolted Structure
Topics: Bolted flanges, Dynamics (Mechanics), Flow (Dynamics), Vibration, Energy dissipation, Manufacturing, Aircraft engines, Bolted joints, Damping, Dry friction
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

Numerical Investigation on Mitigation of Heat Transfer Deterioration of Supercritical CO2 Flow by Introducing Multiple Turbulators Along Helices in a Circular Tube

Hangfei Duan, Gongnan Xie, Yuan Ma, Shulei Li
Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A031, June 13–17, 2022
Paper No: GT2022-83501
DOI: https://doi.org/10.1115/GT2022-83501
View Paper titled, Numerical Investigation on Mitigation of Heat Transfer Deterioration of Supercritical CO2 Flow by Introducing Multiple Turbulators Along Helices in a Circular Tube
Click here to open pdf in another window PDF for Numerical Investigation on Mitigation of Heat Transfer Deterioration of Supercritical CO2 Flow by Introducing Multiple Turbulators Along Helices in a Circular Tube
Topics: Flow (Dynamics), Heat transfer, Supercritical carbon dioxide, Turbulence
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
Click here to open pdf in another window PDF for Influence of Geometric Parameters for a 100 kW Inward Flow Radial Supercritical CO 2 Turbine
Topics: Coriolis force, Design, Flow (Dynamics), 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

Investigation of Gas Turbine Internal Cooling Using Supercritical CO2 – Effect of Surface Roughness and Channel Aspect Ratio

Arnab Roy, Matthew Searle, Sridharan Ramesh, Douglas Straub
Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A026, June 13–17, 2022
Paper No: GT2022-83319
DOI: https://doi.org/10.1115/GT2022-83319
View Paper titled, Investigation of Gas Turbine Internal Cooling Using Supercritical CO2 – Effect of Surface Roughness and Channel Aspect Ratio
Click here to open pdf in another window PDF for Investigation of Gas Turbine Internal Cooling Using Supercritical CO2 – Effect of Surface Roughness and Channel Aspect Ratio
Topics: Cooling, Gas turbines, Supercritical carbon dioxide, Surface roughness, Reynolds number, Additive manufacturing, Computational fluid dynamics, Heat transfer, Flow (Dynamics), Fluids
Proceedings Papers

Windage Loss and Flow Characteristics in Impeller Back Clearance of sCO 2 Centrifugal Compressor

Lehao Hu, Qinghua Deng, Zhigang Li, Jun Li, Zhenping Feng
Proc. ASME. GT2022, Volume 9: Supercritical CO2, V009T28A018, June 13–17, 2022
Paper No: GT2022-82921
DOI: https://doi.org/10.1115/GT2022-82921
View Paper titled, Windage Loss and Flow Characteristics in Impeller Back Clearance of sCO 2 Centrifugal Compressor
Click here to open pdf in another window PDF for Windage Loss and Flow Characteristics in Impeller Back Clearance of sCO 2 Centrifugal Compressor
Topics: Clearances (Engineering), Compressors, Flow (Dynamics), Impellers
Proceedings Papers

Fan Stability Enhancement With Partial Casing Treatments

Matthew K. Oldfield, Alejandro Castillo Pardo, Cesare A. Hall
Proc. ASME. GT2022, Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V10AT29A020, June 13–17, 2022
Paper No: GT2022-82039
DOI: https://doi.org/10.1115/GT2022-82039
View Paper titled, Fan Stability Enhancement With Partial Casing Treatments
Click here to open pdf in another window PDF for Fan Stability Enhancement With Partial Casing Treatments
Topics: Stability, Annulus, Rotors, Flow (Dynamics), Compressors, Fans, Stall inception
Proceedings Papers

Mitigation of BLI Circumferential Distortion Using Non-Axisymmetric Fan Exit Guide Vanes

David Hall, Edward Greitzer, Choon Tan
Proc. ASME. GT2022, Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V10AT29A031, June 13–17, 2022
Paper No: GT2022-82465
DOI: https://doi.org/10.1115/GT2022-82465
View Paper titled, Mitigation of BLI Circumferential Distortion Using Non-Axisymmetric Fan Exit Guide Vanes
Click here to open pdf in another window PDF for Mitigation of BLI Circumferential Distortion Using Non-Axisymmetric Fan Exit Guide Vanes
Topics: Guide vanes, Flow (Dynamics), Rotors, Design, Stators, Boundary layers, Geometry, Tradeoffs
Proceedings Papers

Experimental Analysis of an Axial Compressor Operating Under Flow Distortion

Alberto Baretter, Pierric Joseph, Olivier Roussette, Francesco Romanó, Antoine Dazin
Proc. ASME. GT2022, Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V10AT29A030, June 13–17, 2022
Paper No: GT2022-82394
DOI: https://doi.org/10.1115/GT2022-82394
View Paper titled, Experimental Analysis of an Axial Compressor Operating Under Flow Distortion
Click here to open pdf in another window PDF for Experimental Analysis of an Axial Compressor Operating Under Flow Distortion
Topics: Compressors, Experimental analysis, Flow (Dynamics)
Proceedings Papers

Flow Dynamics of a Subsonic Axial Compressor Rotor With Leaned Tandem Blades

Amit Kumar, Jerry T. John, Akshay Kumar, Hitesh Chhugani, A. M. Pradeep
Proc. ASME. GT2022, Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V10AT29A021, June 13–17, 2022
Paper No: GT2022-82075
DOI: https://doi.org/10.1115/GT2022-82075
View Paper titled, Flow Dynamics of a Subsonic Axial Compressor Rotor With Leaned Tandem Blades
Click here to open pdf in another window PDF for Flow Dynamics of a Subsonic Axial Compressor Rotor With Leaned Tandem Blades
Topics: Blades, Compressors, Flow (Dynamics), Leakage, Rotors, Vortices, Design, Pressure, Shapes, Diffusion (Physics)