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Volker Gümmer
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Proceedings Papers

Investigation of the Effect of Blade Passing on Two-Phase Flow Within Discrete Compressor Casing Recirculation Channel Using Particle Image Velocimetry

Carlos Eduardo Ribeiro Santa Cruz Mendoza, I. Bedii Ozdemir, Christian Helcig, Volker Gümmer
Publisher: American Society of Mechanical Engineers
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A025, June 26–30, 2023
Paper No: GT2023-102553
https://doi.org/10.1115/GT2023-102553
View Paper titled, Investigation of the Effect of Blade Passing on Two-Phase Flow Within Discrete Compressor Casing Recirculation Channel Using Particle Image Velocimetry
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Topics: Blades, Compressors, Flow (Dynamics), Particulate matter, Two-phase flow
Proceedings Papers

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
Publisher: American Society of Mechanical Engineers
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A019, June 26–30, 2023
Paper No: GT2023-101948
https://doi.org/10.1115/GT2023-101948
View Paper titled, A Numerical Design Space Investigation of Low-Speed Axial Compressor Stages Using Single-Row and Tandem Bladings
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Topics: Airfoils, Compressors, Design
Proceedings Papers

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
Publisher: American Society of Mechanical Engineers
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A004, June 26–30, 2023
Paper No: GT2023-100986
https://doi.org/10.1115/GT2023-100986
View Paper 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, Airfoils, Design, Flow (Dynamics), Boundary layers, Engineering simulation, Metals, Pressure, Rotors, Simulation
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
Publisher: American Society of Mechanical Engineers
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
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

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
Publisher: American Society of Mechanical Engineers
Proc. ASME. GT2023, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A019, June 26–30, 2023
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

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
Publisher: American Society of Mechanical Engineers
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A026, June 26–30, 2023
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
Publisher: American Society of Mechanical Engineers
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A010, June 26–30, 2023
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
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Topics: Compressors, Flow (Dynamics), Leakage, Rotors, Stability, Vortices, Wake turbulence
Proceedings Papers

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

Jannik Petermann, Kevin Schulz, Bernd Becker, Volker Gümmer
Publisher: American Society of Mechanical Engineers
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A003, June 26–30, 2023
Paper No: GT2023-100717
https://doi.org/10.1115/GT2023-100717
View Paper titled, Attenuation of Detrimental Hub Leakage Effects in an Axial Compressor Rotor by Customized Geometrical Design Features
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Topics: Compressors, Design, Geometry, Leakage, Rotors
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
Publisher: American Society of Mechanical Engineers
Proc. ASME. GT2023, Volume 4: Controls, Diagnostics, and Instrumentation, V004T05A003, June 26–30, 2023
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
Publisher: American Society of Mechanical Engineers
Proc. ASME. GT2023, Volume 5: Cycle Innovations, V005T06A001, June 26–30, 2023
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
Journal Articles

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

Accepted Manuscript
Samuele Giannini, Guilherme M. Luz, Philipp von Jeinsen, Mattia Straccia, Volker Gümmer
Journal: Journal of Turbomachinery
Article Type: Research Papers
Publisher: ASME
J. Turbomach.
Paper No: TURBO-23-1151
https://doi.org/10.1115/1.4063513
Published Online: September 27, 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, Turbochargers
Journal Articles

ATTENUATION OF DETRIMENTAL HUB LEAKAGE EFFECTS IN AN AXIAL COMPRESSOR ROTOR BY CUSTOMIZED GEOMETRICAL DESIGN FEATURES

Accepted Manuscript
Jannik Petermann, Kevin Schulz, Bernd Becker, Volker Gümmer
Journal: Journal of Turbomachinery
Article Type: Research Papers
Publisher: ASME
J. Turbomach.
Paper No: TURBO-23-1154
https://doi.org/10.1115/1.4063508
Published Online: September 27, 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, Leakage, Rotors, Turbochargers
Journal Articles

The New Chapter of Transonic Compressor Cascade Design at the DLR

Edwin J. Munoz Lopez, Alexander Hergt, Sebastian Grund, Volker Gümmer
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. August 2023, 145(8): 081001.
Paper No: TURBO-22-1193
https://doi.org/10.1115/1.4056982
Published Online: April 3, 2023
View Article titled, The New Chapter of Transonic Compressor Cascade Design at the DLR
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Topics: Cascades (Fluid dynamics), Compressors, Design, Optimization, Computational fluid dynamics, Airfoils, Pressure
Journal Articles

Numerical Investigation of Near-Tip Modifications for a Highly Loaded Low-Speed Rotor Under the Influence of Double Leakage

Jannik Eckel, Philipp von Jeinsen, Volker Gümmer
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. April 2023, 145(4): 041003.
Paper No: TURBO-22-1204
https://doi.org/10.1115/1.4055651
Published Online: November 3, 2022
View Article titled, Numerical Investigation of Near-Tip Modifications for a Highly Loaded Low-Speed Rotor Under the Influence of Double Leakage
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Topics: Blades, Design, Entropy, Flow (Dynamics), Leakage, Pressure, Rotors, Vortices, Compressors
Proceedings Papers

Numerical Investigation of Near-Tip Modifications for a Highly-Loaded Low-Speed Rotor Under the Influence of Double Leakage

Jannik Eckel, Philipp von Jeinsen, Volker Gümmer
Proc. ASME. GT2022, Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V10AT29A023, June 13–17, 2022
Paper No: GT2022-82143
https://doi.org/10.1115/GT2022-82143
View Paper titled, Numerical Investigation of Near-Tip Modifications for a Highly-Loaded Low-Speed Rotor Under the Influence of Double Leakage
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Topics: Compressors, Flow (Dynamics), Leakage, Rotors, Vortices
Proceedings Papers

Numerical Analysis of Blade Platform Leakage in Axial Compressors

Jannik Petermann, Marvin Pommerening, Volker Gümmer, Bernd Becker
Proc. ASME. GT2022, Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V10AT29A004, June 13–17, 2022
Paper No: GT2022-78443
https://doi.org/10.1115/GT2022-78443
View Paper titled, Numerical Analysis of Blade Platform Leakage in Axial Compressors
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Topics: Blades, Compressors, Geometry, Leakage, Numerical analysis
Proceedings Papers

Design of a Blowing Type Flow Treatment to Complement Casing Treatments for Compact High-Pressure Compressor Rear Stages

Christian P. Köhler, Christofer Kendall-Torry, Christian Helcig, Volker Gümmer
Proc. ASME. GT2022, Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V10AT29A002, June 13–17, 2022
Paper No: GT2022-78311
https://doi.org/10.1115/GT2022-78311
View Paper titled, Design of a Blowing Type Flow Treatment to Complement Casing Treatments for Compact High-Pressure Compressor Rear Stages
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Topics: Compressors, Design, Flow (Dynamics), High pressure (Physics), Rotors, Stators, Corners (Structural elements), Delays, Engineering simulation, Experimental design
Proceedings Papers

Analysis of Cavity Leakage Effects on Coupled Non-Axisymmetric Endwall-Airfoil Optimization in a Low-Speed Compressor Tandem Stator

Mattia Straccia, Samuele Giannini, Volker Gümmer
Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT32A027, June 13–17, 2022
Paper No: GT2022-82418
https://doi.org/10.1115/GT2022-82418
View Paper titled, Analysis of Cavity Leakage Effects on Coupled Non-Axisymmetric Endwall-Airfoil Optimization in a Low-Speed Compressor Tandem Stator
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Topics: Airfoils, Cavities, Compressors, Leakage, Optimization, Stators, Flow (Dynamics), Design, Leakage flows, Geometry
Journal Articles

Numerical Calibration and Investigation of the Influence of Reynolds Number on Measurements With Five-Hole Probes in Compressible Flows

Christian Schäffer, Konstantin Speck, Volker Gümmer
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. September 2022, 144(9): 091010.
Paper No: TURBO-21-1169
https://doi.org/10.1115/1.4053835
Published Online: March 4, 2022
View Article titled, Numerical Calibration and Investigation of the Influence of Reynolds Number on Measurements With Five-Hole Probes in Compressible Flows
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Topics: Calibration, Pressure, Probes, Reynolds number, Yaw, Errors, Geometry
Proceedings Papers

Numerical Calibration and Investigation of the Influence Of Reynolds Number on Measurements With Five-Hole Probes In Compressible Flows

Christian Schäffer, Konstantin Speck, Volker Gümmer
Proc. ASME. GT2021, Volume 4: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage; Education; Electric Power, V004T05A002, June 7–11, 2021
Paper No: GT2021-58618
https://doi.org/10.1115/GT2021-58618
View Paper titled, Numerical Calibration and Investigation of the Influence Of Reynolds Number on Measurements With Five-Hole Probes In Compressible Flows
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Topics: Calibration, Compressible flow, Probes, Reynolds number