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Hubert Schwarze
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Journal Articles

The Impact of Pad Elasticity on Frequency-Dependent Linear Dynamic Coefficients of Tilting-Pad Journal Bearings

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Daniel Vetter, Philipp Zemella, Thomas Hagemann, Hubert Schwarze
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2025, 147(6): 061024.
Paper No: GTP-24-1675
https://doi.org/10.1115/1.4066893
Published Online: December 20, 2024
View Articletitled, The Impact of Pad Elasticity on Frequency-Dependent Linear Dynamic Coefficients of Tilting-Pad Journal Bearings
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Topics: Bearings, Stiffness, Stress, Damping, Elasticity
Proceedings Papers

The Impact of Pad Elasticity on Frequency-Dependent Linear Dynamic Coefficients of Tilting-Pad Journal Bearings

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Daniel Vetter, Philipp Zemella, Thomas Hagemann, Hubert Schwarze
Proc. ASME. GT2024, Volume 10A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing, V10AT22A013, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126246
https://doi.org/10.1115/GT2024-126246
View Paper titled, The Impact of Pad Elasticity on Frequency-Dependent Linear Dynamic Coefficients of Tilting-Pad Journal Bearings
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Topics: Elasticity, Journal bearings, Stiffness, Bearings, Boundary-value problems, Deformation, Film thickness, Finite element model, Hydrodynamics, Lubricants
Proceedings Papers

The Impact of Friction in Lube Oil Feed Grooves on Power Loss in High-Speed Journal Bearings

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Daniel Vetter, Thomas Hagemann, Hubert Schwarze
Proc. ASME. GT2024, Volume 10A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing, V10AT22A019, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-127952
https://doi.org/10.1115/GT2024-127952
View Paper titled, The Impact of Friction in Lube Oil Feed Grooves on Power Loss in High-Speed Journal Bearings
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Topics: Friction, Journal bearings, Lubrication
Journal Articles

An Algorithm for Starved Lubricated Journal Bearings With Optionally Locked Lube Oil Feed Grooves

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Thomas Hagemann, Daniel Vetter, Hubert Schwarze
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2024, 146(2): 021019.
Paper No: GTP-23-1457
https://doi.org/10.1115/1.4063528
Published Online: November 28, 2023
View Articletitled, An Algorithm for Starved Lubricated Journal Bearings With Optionally Locked Lube Oil Feed Grooves
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Topics: Algorithms, Bearings, Flow (Dynamics), Journal bearings, Lubricants, Pressure, Cavitation
Journal Articles

The Impact of Thermal Load and Turbulent Flow on Minimum Film Thickness of a Large Tilting-Pad Journal Bearing

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Daniel Vetter, Thomas Hagemann, Hubert Schwarze
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2024, 146(1): 011007.
Paper No: GTP-23-1370
https://doi.org/10.1115/1.4063383
Published Online: October 17, 2023
View Articletitled, The Impact of Thermal Load and Turbulent Flow on Minimum Film Thickness of a Large Tilting-Pad Journal Bearing
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Topics: Approximation, Bearings, Clearances (Engineering), Deformation, Film thickness, Stress, Temperature, Thermomechanics, Turbulence, Journal bearings
Proceedings Papers

The Impact of Thermal Load and Turbulent Flow on Minimum Film Thickness of a Large Tilting-Pad Journal Bearing

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Daniel Vetter, Thomas Hagemann, Hubert Schwarze
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A011, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102244
https://doi.org/10.1115/GT2023-102244
View Paper titled, The Impact of Thermal Load and Turbulent Flow on Minimum Film Thickness of a Large Tilting-Pad Journal Bearing
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Topics: Film thickness, Journal bearings, Thermal loads, Turbulence
Proceedings Papers

An Algorithm for Starved Lubricated Journal Bearings With Optionally Locked Lube Oil Feed Grooves

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Thomas Hagemann, Daniel Vetter, Hubert Schwarze
Proc. ASME. GT2023, Volume 11A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics, V11AT22A030, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103732
https://doi.org/10.1115/GT2023-103732
View Paper titled, An Algorithm for Starved Lubricated Journal Bearings With Optionally Locked Lube Oil Feed Grooves
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Topics: Algorithms, Cavitation, Journal bearings
Journal Articles

Slip Characteristics in Cylindrical Roller Bearings—Part III: Influence of Bearing Clearance on the Roller and Set Slip

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Michael Dawoud, Stephan Beitler, Hubert Schwarze
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. February 2023, 145(2): 021205.
Paper No: TRIB-22-1050
https://doi.org/10.1115/1.4055557
Published Online: November 10, 2022
View Articletitled, Slip Characteristics in Cylindrical Roller Bearings—Part III: Influence of Bearing Clearance on the Roller and Set Slip
Open the PDF for Slip Characteristics in Cylindrical Roller Bearings—Part III: Influence of Bearing Clearance on the Roller and Set Slip in another window
Topics: Bearings, Clearances (Engineering), Rollers, Stress
Journal Articles

Slip Characteristics in Cylindrical Roller Bearings—Part II: Influence of Cage Type on Rolling Element Slip

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Michael Dawoud, Stephan Beitler, Hubert Schwarze
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. February 2023, 145(2): 021204.
Paper No: TRIB-22-1046
https://doi.org/10.1115/1.4055556
Published Online: November 10, 2022
View Articletitled, Slip Characteristics in Cylindrical Roller Bearings—Part II: Influence of Cage Type on Rolling Element Slip
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Topics: Bearings, Rollers, Stress, Knudsen number
Journal Articles

Slip Characteristics in Cylindrical Roller Bearings. Part I: Influence of Cage Type on Rolling Set Slip

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Michael Dawoud, Stephan Beitler, Hubert Schwarze
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. February 2023, 145(2): 021203.
Paper No: TRIB-22-1063
https://doi.org/10.1115/1.4055555
Published Online: November 10, 2022
View Articletitled, Slip Characteristics in Cylindrical Roller Bearings. Part I: Influence of Cage Type on Rolling Set Slip
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Topics: Bearings, Rollers, Knudsen number, Flow (Dynamics), Roller bearings, Stress
Journal Articles

Identification of Dynamic Coefficients of a Five-Pad Tilting Pad Journal Bearing Up to Highest Surface Speeds

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Philipp Zemella, Thomas Hagemann, Bastian Pfau, Hubert Schwarze
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2021, 143(8): 081013.
Paper No: GTP-20-1572
https://doi.org/10.1115/1.4049664
Published Online: March 31, 2021
View Articletitled, Identification of Dynamic Coefficients of a Five-Pad Tilting Pad Journal Bearing Up to Highest Surface Speeds
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Topics: Bearings, Damping, Flow (Dynamics), Stiffness, Stress, Journal bearings, Excitation, Fluid films
Journal Articles

Evaluation of the Rotor Temperature Distribution of an Automotive Turbocharger Under Hot Gas Conditions Including Indirect Experimental Validation

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Christopher Zeh, Ole Willers, Thomas Hagemann, Hubert Schwarze, Jörg Seume
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2021, 143(3): 031022.
Paper No: GTP-20-1701
https://doi.org/10.1115/1.4049825
Published Online: February 24, 2021
View Articletitled, Evaluation of the Rotor Temperature Distribution of an Automotive Turbocharger Under Hot Gas Conditions Including Indirect Experimental Validation
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Topics: Bearings, Heat, Rotors, Temperature, Turbines, Turbochargers, Heat transfer, Flow (Dynamics), Compressors, Thermohydrodynamics
Proceedings Papers

Identification of Dynamic Coefficients of a Five-Pad Tilting Pad Journal Bearing up to Highest Surface Speeds

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Philipp Zemella, Thomas Hagemann, Bastian Pfau, Hubert Schwarze
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT25A019, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14991
https://doi.org/10.1115/GT2020-14991
View Paper titled, Identification of Dynamic Coefficients of a Five-Pad Tilting Pad Journal Bearing up to Highest Surface Speeds
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Topics: Journal bearings, Bearings, Stress, Damping, Excitation, Flow (Dynamics), Stiffness, Rotors, Algorithms, Deflection
Proceedings Papers

Evaluation of the Rotor Temperature Distribution of an Automotive Turbocharger Under Hot Gas Conditions Including Indirect Experimental Validation

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Christopher Zeh, Ole Willers, Thomas Hagemann, Hubert Schwarze, Joerg R. Seume
Proc. ASME. GT2020, Volume 2C: Turbomachinery, V02CT35A051, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-16077
https://doi.org/10.1115/GT2020-16077
View Paper titled, Evaluation of the Rotor Temperature Distribution of an Automotive Turbocharger Under Hot Gas Conditions Including Indirect Experimental Validation
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Topics: Computational fluid dynamics, Heat transfer, Rotors, Temperature, Temperature distribution, Turbochargers, Bearings, Flow (Dynamics), Fluid films, Heat
Journal Articles

Experimental Validation of an Intelligent Hybrid Plain Bearing Active Control

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Clément Eberhardt, Robin Kurth, Christian Kraft, Hubert Schwarze, Thomas Päßler, Markus Bergmann, Matthias Putz
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2021, 143(4): 041802.
Paper No: TRIB-20-1258
https://doi.org/10.1115/1.4048384
Published Online: September 28, 2020
View Articletitled, Experimental Validation of an Intelligent Hybrid Plain Bearing Active Control
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Topics: Bearings, Hydrostatics, Journal bearings, Lubrication, Plain bearings, Stress
Journal Articles

Theoretical and Experimental Analyses of Directly Lubricated Tilting-Pad Journal Bearings With Leading Edge Groove

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Thomas Hagemann, Hubert Schwarze
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2019, 141(5): 051010.
Paper No: GTP-18-1354
https://doi.org/10.1115/1.4041026
Published Online: December 12, 2018
View Articletitled, Theoretical and Experimental Analyses of Directly Lubricated Tilting-Pad Journal Bearings With Leading Edge Groove
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Topics: Bearings, Boundary-value problems, Design, Flow (Dynamics), Journal bearings, Lubricants, Lubrication, Pressure, Temperature, Stress
Proceedings Papers

A Numerical Approach for the Evaluation of a Capillary Viscometer Experiment

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Felix Fischer, Julian Bartz, Katharina Schmitz, Ludwig Brouwer, Hubert Schwarze
Proc. ASME. FPMC2018, BATH/ASME 2018 Symposium on Fluid Power and Motion Control, V001T01A009, September 12–14, 2018
Publisher: American Society of Mechanical Engineers
Paper No: FPMC2018-8815
https://doi.org/10.1115/FPMC2018-8815
View Paper titled, A Numerical Approach for the Evaluation of a Capillary Viscometer Experiment
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Topics: Algorithms, Blood, Calibration, Computational fluid dynamics, Cycles, Diesel injection pumps, Flow (Dynamics), Fluids, Geometry, Laminar flow
Journal Articles

A Model for Oil Flow and Fluid Temperature Inlet Mixing in Hydrodynamic Journal Bearings

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Thomas Hagemann, Hubert Schwarze
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. February 2019, 141(2): 021701.
Paper No: TRIB-18-1190
https://doi.org/10.1115/1.4041211
Published Online: October 11, 2018
View Articletitled, A Model for Oil Flow and Fluid Temperature Inlet Mixing in Hydrodynamic Journal Bearings
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Topics: Flow (Dynamics), Temperature, Bearings, Lubricants, Fluids, Pressure
Proceedings Papers

Theoretical and Experimental Analyses of Directly Lubricated Tilting-Pad Journal Bearings With Leading Edge Groove

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Thomas Hagemann, Hubert Schwarze
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A021, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75659
https://doi.org/10.1115/GT2018-75659
View Paper titled, Theoretical and Experimental Analyses of Directly Lubricated Tilting-Pad Journal Bearings With Leading Edge Groove
Open the PDF for Theoretical and Experimental Analyses of Directly Lubricated Tilting-Pad Journal Bearings With Leading Edge Groove in another window
Topics: Experimental analysis, Journal bearings, Bearings, Design, Flow (Dynamics), Stress, Lubrication, Bearing design, Boundary-value problems, Clearances (Engineering)
Proceedings Papers

Potentials and Limitations of an Extended Approximation Method for Nonlinear Dynamic Journal and Thrust Bearing Forces

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Daniel Vetter, Thomas Hagemann, Hubert Schwarze
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A022, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75662
https://doi.org/10.1115/GT2018-75662
View Paper titled, Potentials and Limitations of an Extended Approximation Method for Nonlinear Dynamic Journal and Thrust Bearing Forces
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Topics: Approximation, Thrust bearings, Bearings, Simulation, Algorithms, Cavitation, Journal bearings, Differential equations, Errors, Modeling