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Proceedings Papers

ParaturboCAD: Automated Parametric Geometry Construction for Gas-Bearing Supported Turbocompressor Design With Python

Soheyl Massoudi, Joseph Bejjani, Timothy Horvath, Dogukan Üstün, Jürg Schiffmann
Proc. ASME. IDETC-CIE2024, Volume 3B: 50th Design Automation Conference (DAC), V03BT03A028, August 25–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: DETC2024-143696
https://doi.org/10.1115/DETC2024-143696
View Paper titled, ParaturboCAD: Automated Parametric Geometry Construction for Gas-Bearing Supported Turbocompressor Design With Python
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Topics: Computer-aided design, Construction, Design, Gas bearings, Geometry, Modeling, Parametrization
Proceedings Papers

DARTS-NETGAB: Design Automation and Real-Time Simulation Using Neural Networks Ensembles for Turbocompressors on Gas-Bearings

Soheyl Massoudi, Joseph Bejjani, Timothy Horvath, Dogukan Üstun, Jürg Schiffmann
Proc. ASME. IDETC-CIE2024, Volume 3B: 50th Design Automation Conference (DAC), V03BT03A054, August 25–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: DETC2024-143135
https://doi.org/10.1115/DETC2024-143135
View Paper titled, DARTS-NETGAB: Design Automation and Real-Time Simulation Using Neural Networks Ensembles for Turbocompressors on Gas-Bearings
Open the PDF for DARTS-NETGAB: Design Automation and Real-Time Simulation Using Neural Networks Ensembles for Turbocompressors on Gas-Bearings in another window
Topics: Artificial neural networks, Computer-aided design, Design, Design automation, Gas bearings, Simulation
Journal Articles

A High-Speed, High-Temperature, Micro-Cantilever Steam Turbine for Hot Syngas Compression in Small-Scale Combined Heat and Power

Victoria He, Jan Van Herle, Jürg Schiffmann
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2025, 147(2): 021020.
Paper No: GTP-24-1515
https://doi.org/10.1115/1.4066355
Published Online: September 27, 2024
View Article titled, A High-Speed, High-Temperature, Micro-Cantilever Steam Turbine for Hot Syngas Compression in Small-Scale Combined Heat and Power
Open the PDF for A High-Speed, High-Temperature, Micro-Cantilever Steam Turbine for Hot Syngas Compression in Small-Scale Combined Heat and Power in another window
Topics: Computational fluid dynamics, Design, High temperature, Rotors, Steam, Turbines, Steam turbines, Blades, Combined heat and power, Solid oxide fuel cells
Journal Articles

A High-Temperature, High-Speed, Oil-Free Syngas Compressor for Small-Scale Combined Heat and Power

Victoria He, Jan Van Herle, Jürg Schiffmann
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2025, 147(2): 021019.
Paper No: GTP-24-1514
https://doi.org/10.1115/1.4066356
Published Online: September 27, 2024
View Article titled, A High-Temperature, High-Speed, Oil-Free Syngas Compressor for Small-Scale Combined Heat and Power
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Topics: Compressors, Computational fluid dynamics, Design, High temperature, Syngas, Solid oxide fuel cells, Blades, Combined heat and power, Pressure, Impellers
Proceedings Papers

A High-Speed, High-Temperature Micro-Cantilever Steam Turbine for Hot Syngas Compression in Small-Scale Combined Heat and Power

Victoria He, Jan Van Herle, Jürg Schiffmann
Proc. ASME. GT2024, Volume 9: Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications; Steam Turbine, V009T18A019, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128096
https://doi.org/10.1115/GT2024-128096
View Paper titled, A High-Speed, High-Temperature Micro-Cantilever Steam Turbine for Hot Syngas Compression in Small-Scale Combined Heat and Power
Open the PDF for A High-Speed, High-Temperature Micro-Cantilever Steam Turbine for Hot Syngas Compression in Small-Scale Combined Heat and Power in another window
Topics: Combined heat and power, Compression, High temperature, Microcantilevers, Solid oxide fuel cells, Steam, Steam turbines, Syngas, Turbines
Proceedings Papers

A High-Temperature, High-Speed, Oil-Free Syngas Compressor for Small-Scale Combined Heat and Power

Victoria He, Jan Van Herle, Jürg Schiffmann
Proc. ASME. GT2024, Volume 9: Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications; Steam Turbine, V009T18A015, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125975
https://doi.org/10.1115/GT2024-125975
View Paper titled, A High-Temperature, High-Speed, Oil-Free Syngas Compressor for Small-Scale Combined Heat and Power
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Topics: Combined heat and power, Compressors, High temperature, Solid oxide fuel cells, Syngas
Journal Articles

An Integrated Approach to Designing Robust Gas-Bearing Supported Turbocompressors Through Surrogate Modeling and Constrained All-At-Once Multi-Objective Optimization

Soheyl Massoudi, Cyril Picard, Jürg Schiffmann
Journal: Journal of Mechanical Design
Publisher: ASME
Article Type: Research Papers
J. Mech. Des. December 2024, 146(12): 121706.
Paper No: MD-24-1183
https://doi.org/10.1115/1.4065823
Published Online: July 19, 2024
View Article titled, An Integrated Approach to Designing Robust Gas-Bearing Supported Turbocompressors Through Surrogate Modeling and Constrained All-At-Once Multi-Objective Optimization
Open the PDF for An Integrated Approach to Designing Robust Gas-Bearing Supported Turbocompressors Through Surrogate Modeling and Constrained All-At-Once Multi-Objective Optimization in another window
Topics: Artificial neural networks, Bearings, Blades, Compressors, Design, Gas bearings, Manufacturing, Optimization, Robustness, Rotors
Proceedings Papers

Dated: Guidelines for Creating Synthetic Datasets for Engineering Design Applications

Cyril Picard, Jürg Schiffmann, Faez Ahmed
Proc. ASME. IDETC-CIE2023, Volume 3A: 49th Design Automation Conference (DAC), V03AT03A015, August 20–23, 2023
Publisher: American Society of Mechanical Engineers
Paper No: DETC2023-111609
https://doi.org/10.1115/DETC2023-111609
View Paper titled, Dated: Guidelines for Creating Synthetic Datasets for Engineering Design Applications
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Topics: Engineering design, Artificial intelligence, Compressors, Design, Sampling methods, Tradeoffs, Turbochargers
Proceedings Papers

An Integrated Approach to Designing Robust Turbocompressors on Gas Bearings Through Surrogate Modeling and Constrained Multi-Objective Optimization

Soheyl Massoudi, Cyril Picard, Jürg Schiffmann
Proc. ASME. IDETC-CIE2023, Volume 3B: 49th Design Automation Conference (DAC), V03BT03A069, August 20–23, 2023
Publisher: American Society of Mechanical Engineers
Paper No: DETC2023-115201
https://doi.org/10.1115/DETC2023-115201
View Paper titled, An Integrated Approach to Designing Robust Turbocompressors on Gas Bearings Through Surrogate Modeling and Constrained Multi-Objective Optimization
Open the PDF for An Integrated Approach to Designing Robust Turbocompressors on Gas Bearings Through Surrogate Modeling and Constrained Multi-Objective Optimization in another window
Topics: Artificial neural networks, Design, Gas bearings, Metamodeling, Pareto optimization
Journal Articles

Robust Design of Herringbone Grooved Journal Bearings Using Multi-Objective Optimization With Artificial Neural Networks

Soheyl Massoudi, Jürg Schiffmann
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2023, 145(11): 111010.
Paper No: TURBO-23-1158
https://doi.org/10.1115/1.4063392
Published Online: October 4, 2023
View Article titled, Robust Design of Herringbone Grooved Journal Bearings Using Multi-Objective Optimization With Artificial Neural Networks
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Topics: Artificial neural networks, Bearings, Design, Journal bearings, Manufacturing, Optimization, Pareto optimization, Robustness, Rotors, Clearances (Engineering)
Proceedings Papers

Parametric Reduced Order Model of a Gas Bearings Supported Rotor

Dimitri Goutaudier, Jürg Schiffmann, Fabio Nobile
Proc. ASME. GT2023, Volume 11B: Structures and Dynamics — Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V11BT26A009, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102519
https://doi.org/10.1115/GT2023-102519
View Paper titled, Parametric Reduced Order Model of a Gas Bearings Supported Rotor
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Topics: Gas bearings, Rotors
Proceedings Papers

Robust Design of Herringbone Grooved Journal Bearings Using Multi-Objective Optimization With Artificial Neural Networks

Soheyl Massoudi, Jürg Schiffmann
Proc. ASME. GT2023, Volume 13D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V13DT34A013, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102428
https://doi.org/10.1115/GT2023-102428
View Paper titled, Robust Design of Herringbone Grooved Journal Bearings Using Multi-Objective Optimization With Artificial Neural Networks
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Topics: Artificial neural networks, Design, Journal bearings, Manufacturing, Pareto optimization, Turbomachinery
Journal Articles

Stability and Unbalance Analysis of Rigid Rotors Supported by Spiral Groove Bearings: Comparison of Different Approaches

Elia Iseli, Jürg Schiffmann
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2021, 143(12): 121008.
Paper No: GTP-21-1350
https://doi.org/10.1115/1.4052025
Published Online: October 4, 2021
View Article titled, Stability and Unbalance Analysis of Rigid Rotors Supported by Spiral Groove Bearings: Comparison of Different Approaches
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Topics: Bearings, Compressibility, Rotors, Stability, Transients (Dynamics), Inertia (Mechanics), Transient analysis
Proceedings Papers

Stability and Unbalance Analysis of Rigid Rotors Supported by Spiral Groove Bearings: Comparison of Different Approaches

Elia Iseli, Jürg Schiffmann
Proc. ASME. GT2021, Volume 6: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels; Microturbines, Turbochargers, and Small Turbomachines, V006T19A013, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59513
https://doi.org/10.1115/GT2021-59513
View Paper titled, Stability and Unbalance Analysis of Rigid Rotors Supported by Spiral Groove Bearings: Comparison of Different Approaches
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Topics: Bearings, Rotors, Stability, Compressibility, Gas bearings, Transients (Dynamics), Center of mass, Equations of motion, Excitation, Fluids
Journal Articles

Theoretical and Experimental Investigation of a 34 Watt Radial-Inflow Steam Turbine With Partial Admission

Patrick H. Wagner, Jan Van herle, Jürg Schiffmann
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2021, 143(8): 081002.
Paper No: GTP-20-1474
https://doi.org/10.1115/1.4049483
Published Online: March 31, 2021
View Article titled, Theoretical and Experimental Investigation of a 34 Watt Radial-Inflow Steam Turbine With Partial Admission
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Topics: Turbines, Rotors, Blades, Flow (Dynamics)
Journal Articles

Experimental Investigation of a Small-Scale Organic Rankine Cycle Turbo-Generator Supported on Gas-Lubricated Bearings

Kévin Rosset, Olivier Pajot, Jürg Schiffmann
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2021, 143(5): 051015.
Paper No: GTP-20-1562
https://doi.org/10.1115/1.4049988
Published Online: March 11, 2021
View Article titled, Experimental Investigation of a Small-Scale Organic Rankine Cycle Turbo-Generator Supported on Gas-Lubricated Bearings
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Topics: Bearings, Fluids, Organic Rankine cycle, Pressure, Pumps, Rotors, Turbines, Turbogenerators, Engineering prototypes, Stress
Proceedings Papers

Theoretical and Experimental Investigation of a 34 Watt Radial-Inflow Steam Turbine With Partial-Admission

Patrick H. Wagner, Jan Van herle, Jürg Schiffmann
Proc. ASME. GT2020, Volume 8: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines, V008T20A023, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15804
https://doi.org/10.1115/GT2020-15804
View Paper titled, Theoretical and Experimental Investigation of a 34 Watt Radial-Inflow Steam Turbine With Partial-Admission
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Topics: Inflow, Steam turbines, Blades, Design, Rotors, Steam, Flow (Dynamics), Turbines, Bearings, Chords (Trusses)
Proceedings Papers

Influence of Large Relative Tip Clearances for a Micro Radial Fan and Design Guidelines for Increased Efficiency

Patrick H. Wagner, Jan Van herle, Lili Gu, Jürg Schiffmann
Proc. ASME. GT2020, Volume 8: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines, V008T20A025, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15994
https://doi.org/10.1115/GT2020-15994
View Paper titled, Influence of Large Relative Tip Clearances for a Micro Radial Fan and Design Guidelines for Increased Efficiency
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Topics: Design, Blades, Clearances (Engineering), Computational fluid dynamics, Computer simulation, Engineering simulation, Fans, Gas bearings, Pressure, Reynolds number
Proceedings Papers

Automated Design Tool for Automotive Control Actuators

Cyril Picard, Jürg Schiffmann
Proc. ASME. IDETC-CIE2020, Volume 11B: 46th Design Automation Conference (DAC), V11BT11A027, August 17–19, 2020
Publisher: American Society of Mechanical Engineers
Paper No: DETC2020-22390
https://doi.org/10.1115/DETC2020-22390
View Paper titled, Automated Design Tool for Automotive Control Actuators
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Topics: Actuators, Design, Automotive industry, Decision making, Electromechanical actuators, Engineers, Laptop computers, Modeling, Optimization, Packaging
Journal Articles

Experimental Assessment of a 3D-Printed Stainless Steel Gas Foil Bearing

Karim Shalash, Jürg Schiffmann
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. August 2020, 142(8): 081802.
Paper No: TRIB-19-1435
https://doi.org/10.1115/1.4047193
Published Online: June 5, 2020
View Article titled, Experimental Assessment of a 3D-Printed Stainless Steel Gas Foil Bearing
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Topics: Additive manufacturing, Bearings, Foil bearings, Manufacturing, Rotors, Stainless steel, Design, Melting, Lasers