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Volker Gümmer
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Proceedings Papers

An Aero Engine Disk Sizing and Weight Estimation Approach With Improved Temperature Profiles

Ioannis Zaimis, Elias Carpentari, Tim Begiebing, Volker Gümmer
Proc. ASME. GT2024, Volume 1: Aircraft Engine, V001T01A038, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126351
https://doi.org/10.1115/GT2024-126351
View Paper titled, An Aero Engine Disk Sizing and Weight Estimation Approach With Improved Temperature Profiles
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Topics: Aircraft engines, Compressors, Disks, Low cycle fatigue, Temperature, Temperature profiles, Weight (Mass)
Proceedings Papers

Gaseous and Particulate Emissions of an Allison 250-C20B Turboshaft Engine Running on HEFA-SPK and its Jet A-1 Blends

Alexander Rabl, Marius Rohkamp, Mohammad Reza Saraji-Bozorgzad, Christian Helcig, Reetu Sallinen, Jesse Vilja, Jan Bendl, Thomas Adam, Andreas Hupfer, Volker Gümmer
Proc. ASME. GT2024, Volume 2: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels, V002T03A022, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126719
https://doi.org/10.1115/GT2024-126719
View Paper titled, Gaseous and Particulate Emissions of an Allison 250-C20B Turboshaft Engine Running on HEFA-SPK and its Jet A-1 Blends
Open the PDF for Gaseous and Particulate Emissions of an Allison 250-C20B Turboshaft Engine Running on HEFA-SPK and its Jet A-1 Blends in another window
Topics: Emissions, Engines, Particulate matter, Soot, Sustainable aviation fuels
Proceedings Papers

Optimization of a Battery Electric Hybrid Propulsion System for a Short Range Aircraft

Jonas Schroeter, Fabian Armbrüster, Reinhold Schaber, Volker Gümmer
Proc. ASME. GT2024, Volume 1: Aircraft Engine, V001T01A037, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-125840
https://doi.org/10.1115/GT2024-125840
View Paper titled, Optimization of a Battery Electric Hybrid Propulsion System for a Short Range Aircraft
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Topics: Aircraft, Batteries, Design, Gas turbines, Optimization, Propulsion systems, Boundary-value problems, Drag (Fluid dynamics), Modeling, Thermal management
Proceedings Papers

Numerical Investigation of Windage Heating in High-Pressure Compressor Shrouded Stator Cavities

Altay Damgacioglu, Francois Cottier, Volker Gümmer
Proc. ASME. GT2024, Volume 8: Heat Transfer: Internal Air Systems; Heat Transfer: Internal Cooling; Industrial and Cogeneration, V008T14A008, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-124239
https://doi.org/10.1115/GT2024-124239
View Paper titled, Numerical Investigation of Windage Heating in High-Pressure Compressor Shrouded Stator Cavities
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Topics: Cavities, Compressors, Computational fluid dynamics, Finite element methods, Finite element model, Heat, Heat transfer, Heating, High pressure (Physics), Stators
Proceedings Papers

Numerical Analysis of the Boundary Layer Behavior of Low-Speed Linear Cascade Compressor Airfoils With Single and Tandem Configurations

Lukas Reisinger, Philippe Bieli, Volker Gümmer
Proc. ASME. GT2024, Volume 12A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V12AT29A048, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128813
https://doi.org/10.1115/GT2024-128813
View Paper titled, Numerical Analysis of the Boundary Layer Behavior of Low-Speed Linear Cascade Compressor Airfoils With Single and Tandem Configurations
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Topics: Airfoils, Boundary layers, Cascades (Fluid dynamics), Compressors, Computational fluid dynamics, Numerical analysis
Proceedings Papers

Numerical Investigation of the Effect of Diffusion Factor Variation on the Performance of Single-Row and Tandem Bladings in Low-Speed Axial Compressor Stages

Philipp von Jeinsen, Samuele Giannini, Volker Gümmer
Proc. ASME. GT2024, Volume 12A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V12AT29A037, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-127650
https://doi.org/10.1115/GT2024-127650
View Paper titled, Numerical Investigation of the Effect of Diffusion Factor Variation on the Performance of Single-Row and Tandem Bladings in Low-Speed Axial Compressor Stages
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Topics: Compressors, Diffusion (Physics), Design, Airfoils, Flow (Dynamics), Inlet guide vanes, Rotors, Stators, Blades, Flight
Proceedings Papers

The Unsteady Shock-Boundary Layer Interaction in a Compressor Cascade – Part 3: Mechanisms of Shock Oscillation

Edwin Joseph Munoz Lopez, Alexander Hergt, Joachim Klinner, Bjoern F. Klose, Chris Willert, Volker Gümmer
Proc. ASME. GT2024, Volume 12D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V12DT36A019, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128197
https://doi.org/10.1115/GT2024-128197
View Paper titled, The Unsteady Shock-Boundary Layer Interaction in a Compressor Cascade – Part 3: Mechanisms of Shock Oscillation
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Topics: Cascades (Fluid dynamics), Compressors, Oscillations, Shock (Mechanics), Pressure, Unsteady flow, Waves, Blades, Computational fluid dynamics, Cycles
Journal Articles

An Aero-Engine Disk Sizing and Weight Estimation Approach With Improved Temperature Profiles

Ioannis Zaimis, Elias Carpentari, Tim Begiebing, Volker Gümmer
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2024, 146(11): 111027.
Paper No: GTP-24-1271
https://doi.org/10.1115/1.4066151
Published Online: August 23, 2024
View Article titled, An Aero-Engine Disk Sizing and Weight Estimation Approach With Improved Temperature Profiles
Open the PDF for An Aero-Engine Disk Sizing and Weight Estimation Approach With Improved Temperature Profiles in another window
Topics: Disks, Temperature, Temperature profiles, Flow (Dynamics), Design, Low cycle fatigue, Stress, Aircraft engines, Cavities, Heat conduction
Journal Articles

The Unsteady Shock-Boundary Layer Interaction in a Compressor Cascade – Part 3: Mechanisms of Shock Oscillation

Accepted Manuscript
Edwin Joseph Munoz Lopez, Alexander Hergt, Joachim Klinner, Bjoern F. Klose, Christian Willert, Volker Gümmer
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-24-1157
https://doi.org/10.1115/1.4066186
Published Online: August 7, 2024
View Article titled, The Unsteady Shock-Boundary Layer Interaction in a Compressor Cascade – Part 3: Mechanisms of Shock Oscillation
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Topics: Cascades (Fluid dynamics), Compressors, Oscillations, Shock (Mechanics), Turbochargers, Computational fluid dynamics, Pressure, Unsteady flow, Waves, Blades
Journal Articles

Numerical Investigation of the Interaction of a Circumferential Groove Casing Treatment and Near-Tip Modifications for a Highly Loaded Low-Speed Rotor Under the Influence of Double Leakage

Jannik Eckel, Lukas Reisinger, Philipp von Jeinsen, Volker Gümmer
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2024, 146(7): 071001.
Paper No: TURBO-23-1211
https://doi.org/10.1115/1.4063756
Published Online: February 26, 2024
View Article titled, Numerical Investigation of the Interaction of a Circumferential Groove Casing Treatment and Near-Tip Modifications for a Highly Loaded Low-Speed Rotor Under the Influence of Double Leakage
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Topics: Blades, Design, Dimensions, Flow (Dynamics), Fluids, Pressure, Rotors, Stability, Vortices, Leakage
Journal Articles

A Numerical Design Space Investigation of Low-Speed Axial Compressor Stages Using Single-Row and Tandem Bladings

Philipp von Jeinsen, Jannik Eckel, Samuele Giannini, Volker Gümmer
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. June 2024, 146(6): 061012.
Paper No: TURBO-23-1162
https://doi.org/10.1115/1.4064422
Published Online: January 29, 2024
View Article titled, A Numerical Design Space Investigation of Low-Speed Axial Compressor Stages Using Single-Row and Tandem Bladings
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Topics: Blades, Design, Rotors, Compressors, Airfoils, Stators
Journal Articles

Detailed Gaseous and Particulate Emissions of an Allison 250-C20B Turboshaft Engine

Marius Rohkamp, Alexander Rabl, Benedikt Gündling, Mohammad Reza Saraji-Bozorgzad, Christopher Mull, Jan Bendl, Carsten Neukirchen, Christian Helcig, Thomas Adam, Volker Gümmer, Andreas Hupfer
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2024, 146(4): 041009.
Paper No: GTP-23-1459
https://doi.org/10.1115/1.4063693
Published Online: December 8, 2023
View Article titled, Detailed Gaseous and Particulate Emissions of an Allison 250-C20B Turboshaft Engine
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Topics: Emissions, Engines, Particulate matter
Journal Articles

Attenuation of Detrimental Hub Leakage Effects in an Axial Compressor Rotor by Customized Geometrical Design Features

Jannik Petermann, Kevin Schulz, Bernd Becker, Volker Gümmer
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. December 2023, 145(12): 121007.
Paper No: TURBO-23-1154
https://doi.org/10.1115/1.4063508
Published Online: October 19, 2023
View Article titled, Attenuation of Detrimental Hub Leakage Effects in an Axial Compressor Rotor by Customized Geometrical Design Features
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Topics: Compressors, Design, Flow (Dynamics), Geometry, Leakage, Pressure, Rotors, Disks, Blades, Cavities
Journal Articles

Numerical Investigation of the Influence of the Degree of Reaction in an Axial Compressor Stage With Tandem Vanes

Samuele Giannini, Guilherme M. Luz, Philipp von Jeinsen, Mattia Straccia, Volker Gümmer
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. December 2023, 145(12): 121008.
Paper No: TURBO-23-1151
https://doi.org/10.1115/1.4063513
Published Online: October 19, 2023
View Article titled, Numerical Investigation of the Influence of the Degree of Reaction in an Axial Compressor Stage With Tandem Vanes
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Topics: Compressors, Design, Diffusion (Physics), Flow (Dynamics), Pressure, Rotors, Stators, Blades, Computational fluid dynamics, Airfoils
Proceedings Papers

Challenges in the Application of Hot-Wire Anemometry for the Investigation of Transient Temperature Fluctuations in a High-Speed Research Compressor

Christian Schäffer, Alexander Rabl, Konstantin Speck, Kiyan Boetzel, Christian Helcig, Volker Gümmer
Proc. ASME. GT2023, Volume 4: Controls, Diagnostics, and Instrumentation, V004T05A003, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100970
https://doi.org/10.1115/GT2023-100970
View Paper titled, Challenges in the Application of Hot-Wire Anemometry for the Investigation of Transient Temperature Fluctuations in a High-Speed Research Compressor
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Topics: Compressors, Contamination, Fluctuations (Physics), Temperature, Temperature measurement, Transients (Dynamics), Vibration, Wire
Proceedings Papers

Parametric Cycle Studies of the Water-Enhanced Turbofan Concept

Paul Ziegler, Sascha Kaiser, Volker Gümmer
Proc. ASME. GT2023, Volume 5: Cycle Innovations, V005T06A001, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100529
https://doi.org/10.1115/GT2023-100529
View Paper titled, Parametric Cycle Studies of the Water-Enhanced Turbofan Concept
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Topics: Cooling, Cycles, Heat exchangers, Turbofans, Water
Proceedings Papers

Detailed Gaseous and Particulate Emissions of an Allison 250-C20B Turboshaft Engine

Marius Rohkamp, Alexander Rabl, Benedikt Gündling, Mohammad Reza Saraji-Bozorgzad, Christopher Mull, Jan Bendl, Carsten Neukirchen, Christian Helcig, Thomas Adam, Volker Gümmer, Andreas Hupfer
Proc. ASME. GT2023, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A019, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101273
https://doi.org/10.1115/GT2023-101273
View Paper titled, Detailed Gaseous and Particulate Emissions of an Allison 250-C20B Turboshaft Engine
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Topics: Emissions, Engines, Particulate matter, Soot
Proceedings Papers

Investigations of the Unsteady Shock-Boundary Layer Interaction in a Transonic Compressor Cascade

Edwin J. Munoz Lopez, Alexander Hergt, Joachim Klinner, Sebastian Grund, Jirair Karboujian, Jasmin Flamm, Volker Gümmer
Proc. ASME. GT2023, Volume 13D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V13DT36A015, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102622
https://doi.org/10.1115/GT2023-102622
View Paper titled, Investigations of the Unsteady Shock-Boundary Layer Interaction in a Transonic Compressor Cascade
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Topics: Cascades (Fluid dynamics), Compressors, Shock (Mechanics)
Proceedings Papers

Multidisciplinary Assessment of Foreign Object Damage (FOD) Sensitive Regions on a Compressor Rotor Blade

Simona Rocchi, Christian Roth, Tobias Froebel, Hans-Peter Hackenberg, Volker Gümmer
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A026, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-102573
https://doi.org/10.1115/GT2023-102573
View Paper titled, Multidisciplinary Assessment of Foreign Object Damage (FOD) Sensitive Regions on a Compressor Rotor Blade
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Topics: Blades, Compressors, Damage, Rotors
Proceedings Papers

Numerical Investigation of the Interaction of a Circumferential Groove Casing Treatment and Near-Tip Modifications for a Highly-Loaded Low-Speed Rotor Under the Influence of Double Leakage

Lukas Reisinger, Jannik Eckel, Philipp von Jeinsen, Volker Gümmer
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A010, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101545
https://doi.org/10.1115/GT2023-101545
View Paper titled, Numerical Investigation of the Interaction of a Circumferential Groove Casing Treatment and Near-Tip Modifications for a Highly-Loaded Low-Speed Rotor Under the Influence of Double Leakage
Open the PDF for Numerical Investigation of the Interaction of a Circumferential Groove Casing Treatment and Near-Tip Modifications for a Highly-Loaded Low-Speed Rotor Under the Influence of Double Leakage in another window
Topics: Compressors, Flow (Dynamics), Leakage, Rotors, Stability, Vortices, Wake turbulence