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Robert Kielb
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Proceedings Papers

Improved Strain-Energy Based Mistuning Models Part I: Motivation, Approach, and Understanding

Shreyas Hegde, Andrew Madden, Robert Kielb
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT21A001, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100678
https://doi.org/10.1115/GT2023-100678
View Paper titled, Improved Strain-Energy Based Mistuning Models Part I: Motivation, Approach, and Understanding
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Topics: Blades, Compressors, Coordinate measuring machines, Disks, Physics, Resonance, Rotors, Structural dynamics, Turbomachinery
Proceedings Papers

Unsteady Pressures During Frequency Lock-in of a Cylinder Experiencing Non-Synchronous Vibrations

Richard Hollenbach, Isabelle Sanz, Robert Kielb
Proc. ASME. GT2023, Volume 13D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V13DT36A022, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103908
https://doi.org/10.1115/GT2023-103908
View Paper titled, Unsteady Pressures During Frequency Lock-in of a Cylinder Experiencing Non-Synchronous Vibrations
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Topics: Computational fluid dynamics, Cylinders, Locks (Waterways), Vibration, Vortex shedding
Journal Articles

Effect of System Mode and Structural Damping Perturbation on the Mistuned Forced Response and Aerodynamic Damping of Embedded Compressor Rotors

Shreyas Hegde, Jonathan D. Inge, Robert Kielb
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2023, 145(5): 051004.
Paper No: GTP-22-1389
https://doi.org/10.1115/1.4055832
Published Online: December 20, 2022
View Article titled, Effect of System Mode and Structural Damping Perturbation on the Mistuned Forced Response and Aerodynamic Damping of Embedded Compressor Rotors
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Topics: Blades, Compressors, Damping, Flutter (Aerodynamics), Rotors
Proceedings Papers

A Fluid-Structure Interaction Tool Using a Van der Pol Based Reduced-Order Model for Buffet and Non-Synchronous Vibrations

Richard Hollenbach, Robert Kielb, Kenneth Hall
Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A007, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-80277
https://doi.org/10.1115/GT2022-80277
View Paper titled, A Fluid-Structure Interaction Tool Using a Van der Pol Based Reduced-Order Model for Buffet and Non-Synchronous Vibrations
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Topics: Fluid structure interaction, Vibration
Proceedings Papers

Impact of Aerodynamic Asymmetry on the Embedded Rotor Forcing and Mistuned Blade Response

Shreyas Hegde, Laith Zori, Rubens Campregher, Robert Kielb
Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A004, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-78101
https://doi.org/10.1115/GT2022-78101
View Paper titled, Impact of Aerodynamic Asymmetry on the Embedded Rotor Forcing and Mistuned Blade Response
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Topics: Blades, Compressors, Computational fluid dynamics, Rotors, Stators, Engineering simulation, Simulation, Waves, Disks, Reflection
Proceedings Papers

Impact of Upstream and Downstream Excitation and Multi-Row Interaction on the Mistuned Forced Response Behavior of an Embedded Compressor Rotor: Higher-Order Mode Aeromechanics

Shreyas Hegde, Laith Zori, Rubens Campregher, Robert Kielb
Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A002, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-78033
https://doi.org/10.1115/GT2022-78033
View Paper titled, Impact of Upstream and Downstream Excitation and Multi-Row Interaction on the Mistuned Forced Response Behavior of an Embedded Compressor Rotor: Higher-Order Mode Aeromechanics
Open the PDF for Impact of Upstream and Downstream Excitation and Multi-Row Interaction on the Mistuned Forced Response Behavior of an Embedded Compressor Rotor: Higher-Order Mode Aeromechanics in another window
Topics: Compressors, Computational fluid dynamics, Excitation, Rotors
Proceedings Papers

Effect of System Mode and Structural Damping Perturbation on the Mistuned Forced Response and Aerodynamic Damping of Embedded Compressor Rotors

Shreyas Hegde, Jonathan D. Inge, Robert Kielb
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, V08AT21A003, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-79761
https://doi.org/10.1115/GT2022-79761
View Paper titled, Effect of System Mode and Structural Damping Perturbation on the Mistuned Forced Response and Aerodynamic Damping of Embedded Compressor Rotors
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Topics: Compressors, Damping, Rotors
Proceedings Papers

An Improved Preliminary Design Tool for Turbomachinery Blades Using Van der Pol Based Reduced-Order Model for Non-Synchronous Vibrations

Richard Hollenbach, Robert Kielb, Kenneth Hall
Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A032, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83391
https://doi.org/10.1115/GT2022-83391
View Paper titled, An Improved Preliminary Design Tool for Turbomachinery Blades Using Van der Pol Based Reduced-Order Model for Non-Synchronous Vibrations
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Topics: Blades, Design, Fluid structure interaction, Turbomachinery, Vibration
Journal Articles

A Fluid–Structure Interaction Tool Using a Van der Pol-Based Reduced-Order Model for Buffet and Nonsynchronous Vibrations

Richard Hollenbach, Robert Kielb, Kenneth Hall
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2023, 145(1): 011009.
Paper No: TURBO-22-1189
https://doi.org/10.1115/1.4055447
Published Online: October 7, 2022
View Article titled, A Fluid–Structure Interaction Tool Using a Van der Pol-Based Reduced-Order Model for Buffet and Nonsynchronous Vibrations
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Topics: Cycles, Cylinders, Fluid structure interaction, Fluids, Locks (Waterways), Oscillations, Phase shift, Simulation, Vibration, Turbomachinery
Journal Articles

Extending a Van Der Pol-Based Reduced-Order Model for Fluid–Structure Interaction Applied to Non-Synchronous Vibrations in Turbomachinery

Richard Hollenbach, Robert Kielb, Kenneth Hall
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2022, 144(3): 031006.
Paper No: TURBO-21-1165
https://doi.org/10.1115/1.4052405
Published Online: October 4, 2021
View Article titled, Extending a Van Der Pol-Based Reduced-Order Model for Fluid–Structure Interaction Applied to Non-Synchronous Vibrations in Turbomachinery
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Topics: Cylinders, Design, Errors, Fluid structure interaction, Fluids, Locks (Waterways), Stiffness, System identification, Turbomachinery, Vibration
Proceedings Papers

Influence of Stator Hub Cavities on the Forced Response Behaviour of an Embedded Compressor Rotor

Shreyas Hegde, Robert Kielb, Laith Zori, Rubens Campregher
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT23A002, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58779
https://doi.org/10.1115/GT2021-58779
View Paper titled, Influence of Stator Hub Cavities on the Forced Response Behaviour of an Embedded Compressor Rotor
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Topics: Cavities, Compressors, Rotors, Stators
Proceedings Papers

Influence of Disc Modes and Sideband Excitations on the Mistuned Forced Response Behaviour of an Embedded Compressor Rotor

Shreyas Hegde, Andrew Madden, Robert Kielb
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT23A003, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58780
https://doi.org/10.1115/GT2021-58780
View Paper titled, Influence of Disc Modes and Sideband Excitations on the Mistuned Forced Response Behaviour of an Embedded Compressor Rotor
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Topics: Compressors, Coordinate measuring machines, Disks, Excitation, Rotors
Proceedings Papers

Extending a Van der Pol Based Reduced-Order Model for Fluid-Structure Interaction Applied to Non-Synchronous Vibrations in Turbomachinery

Richard Hollenbach, Robert Kielb, Kenneth Hall
Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT34A008, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58965
https://doi.org/10.1115/GT2021-58965
View Paper titled, Extending a Van der Pol Based Reduced-Order Model for Fluid-Structure Interaction Applied to Non-Synchronous Vibrations in Turbomachinery
Open the PDF for Extending a Van der Pol Based Reduced-Order Model for Fluid-Structure Interaction Applied to Non-Synchronous Vibrations in Turbomachinery in another window
Topics: Fluid structure interaction, Turbomachinery, Vibration
Proceedings Papers

Impact of Multi-Row Aerodynamic Interaction on the Forced Response Behaviour of an Embedded Compressor Rotor

Shreyas Hegde, Robert Kielb, Laith Zori, Rubens Campregher
Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET41A012, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14482
https://doi.org/10.1115/GT2020-14482
View Paper titled, Impact of Multi-Row Aerodynamic Interaction on the Forced Response Behaviour of an Embedded Compressor Rotor
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Topics: Compressors, Rotors
Journal Articles

Separation of Up and Downstream Forced Response Excitations of an Embedded Compressor Rotor

Shreyas Hegde, Zhiping Mao, Tianyu Pan, Laith Zori, Rubens Campregher, Robert Kielb
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. September 2019, 141(9): 091013.
Paper No: TURBO-18-1340
https://doi.org/10.1115/1.4044212
Published Online: August 1, 2019
View Article titled, Separation of Up and Downstream Forced Response Excitations of an Embedded Compressor Rotor
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Topics: Blades, Compressors, Excitation, Pressure, Reflection, Rotors, Simulation, Stators, Waves, Wakes
Journal Articles

Mistuned Higher-Order Mode Forced Response of an Embedded Compressor Rotor—Part II: Mistuned Forced Response Prediction

Jing Li, Nyansafo Aye-Addo, Robert Kielb, Nicole Key
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. March 2018, 140(3): 031006.
Paper No: TURBO-17-1210
https://doi.org/10.1115/1.4038519
Published Online: December 20, 2017
View Article titled, Mistuned Higher-Order Mode Forced Response of an Embedded Compressor Rotor—Part II: Mistuned Forced Response Prediction
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Topics: Blades, Compressors, Coordinate measuring machines, Rotors, Eigenvalues, Sensitivity analysis
Proceedings Papers

Mistuned Higher-Order Mode Forced Response of an Embedded Compressor Rotor: Part I — Steady and Unsteady Aerodynamics

Jing Li, Nyansafo Aye-Addo, Nicholas Kormanik, III, Douglas Matthews, Nicole Key, Robert Kielb
Proc. ASME. GT2017, Volume 7B: Structures and Dynamics, V07BT36A021, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64633
https://doi.org/10.1115/GT2017-64633
View Paper titled, Mistuned Higher-Order Mode Forced Response of an Embedded Compressor Rotor: Part I — Steady and Unsteady Aerodynamics
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Topics: Aerodynamics, Compressors, Rotors, Stators, Resonance, Engineering simulation, Impulse (Physics), Industrial design, Leakage flows, Numerical analysis
Proceedings Papers

Mistuned Higher-Order Mode Forced Response of an Embedded Compressor Rotor: Part II — Mistuned Forced Response Prediction

Jing Li, Nyansafo Aye-Addo, Robert Kielb, Nicole Key
Proc. ASME. GT2017, Volume 7B: Structures and Dynamics, V07BT36A023, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64647
https://doi.org/10.1115/GT2017-64647
View Paper titled, Mistuned Higher-Order Mode Forced Response of an Embedded Compressor Rotor: Part II — Mistuned Forced Response Prediction
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Topics: Compressors, Rotors, Blades, Coordinate measuring machines, Density, Measurement systems, Resonance, Sensitivity analysis, Stators, Stress
Proceedings Papers

Forcing Superposition and Decomposition of an Embedded Compressor Rotor

Jing Li, Robert Kielb
Proc. ASME. GT2017, Volume 7B: Structures and Dynamics, V07BT36A024, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64657
https://doi.org/10.1115/GT2017-64657
View Paper titled, Forcing Superposition and Decomposition of an Embedded Compressor Rotor
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Topics: Compressors, Rotors, Stators, Computational fluid dynamics, Approximation, Excitation
Proceedings Papers

Flutter of Low Pressure Turbine Blades With Cyclic Symmetric Modes: A Preliminary Design Method

Robert Kielb, John Barter, Olga Chernysheva, Torsten Fransson
Proc. ASME. GT2003, Volume 4: Turbo Expo 2003, 423-428, June 16–19, 2003
Publisher: American Society of Mechanical Engineers
Paper No: GT2003-38694
https://doi.org/10.1115/GT2003-38694
View Paper titled, Flutter of Low Pressure Turbine Blades With Cyclic Symmetric Modes: A Preliminary Design Method
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Topics: Design methodology, Flutter (Aerodynamics), Pressure, Turbine blades, Mode shapes, Blades, Rotation, Turbines, Vibration analysis