1-20 of 42
Volker Gümmer
Close
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
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
Open the PDF for Attenuation of Detrimental Hub Leakage Effects in an Axial Compressor Rotor by Customized Geometrical Design Features in another window
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
Open the PDF for Numerical Investigation of the Influence of the Degree of Reaction in an Axial Compressor Stage With Tandem Vanes in another window
Topics: Compressors, Design, Diffusion (Physics), Flow (Dynamics), Pressure, Rotors, Stators, Blades, Computational fluid dynamics, Airfoils
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

Accepted Manuscript
Jannik Eckel, Lukas Reisinger, Philipp von Jeinsen, Volker Gümmer
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach.
Paper No: TURBO-23-1211
https://doi.org/10.1115/1.4063756
Published Online: October 12, 2023
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
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, Leakage, Rotors, Turbochargers, Blades, Computational fluid dynamics, Design, Flow (Dynamics), Pressure, Numerical analysis
Journal Articles

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

Accepted Manuscript
Marius Rohkamp, Alexander Rabl, Benedikt Gündling, Mohammad 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.
Paper No: GTP-23-1459
https://doi.org/10.1115/1.4063693
Published Online: October 6, 2023
View Article titled, Detailed Gaseous and Particulate Emissions of an Allison 250-C20B Turboshaft Engine
Open the PDF for Detailed Gaseous and Particulate Emissions of an Allison 250-C20B Turboshaft Engine in another window
Topics: Emissions, Engines, Particulate matter, Aerosols, Nitrogen oxides, Carbon dioxide, Air pollution, Aviation, Combustion, Cycles
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
Open the PDF for Detailed Gaseous and Particulate Emissions of an Allison 250-C20B Turboshaft Engine in another window
Topics: Emissions, Engines, Particulate matter, Soot
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
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A025, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
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
Open the PDF for Investigation of the Effect of Blade Passing on Two-Phase Flow Within Discrete Compressor Casing Recirculation Channel Using Particle Image Velocimetry in another window
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
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A019, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
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
Open the PDF for A Numerical Design Space Investigation of Low-Speed Axial Compressor Stages Using Single-Row and Tandem Bladings in another window
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
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A004, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
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
Open the PDF for Numerical Investigation of the Influence of the Degree of Reaction in an Axial Compressor Stage With Tandem Vanes in another window
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
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
Open the PDF for Investigations of the Unsteady Shock-Boundary Layer Interaction in a Transonic Compressor Cascade in another window
Topics: Cascades (Fluid dynamics), Compressors, Shock (Mechanics)
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
Open the PDF for Challenges in the Application of Hot-Wire Anemometry for the Investigation of Transient Temperature Fluctuations in a High-Speed Research Compressor in another window
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
Open the PDF for Parametric Cycle Studies of the Water-Enhanced Turbofan Concept in another window
Topics: Cooling, Cycles, Heat exchangers, Turbofans, Water
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
Open the PDF for Multidisciplinary Assessment of Foreign Object Damage (FOD) Sensitive Regions on a Compressor Rotor Blade in another window
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
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
Proc. ASME. GT2023, Volume 13A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V13AT29A003, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
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
Open the PDF for Attenuation of Detrimental Hub Leakage Effects in an Axial Compressor Rotor by Customized Geometrical Design Features in another window
Topics: Compressors, Design, Geometry, Leakage, Rotors
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
Publisher: ASME
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
Open the PDF for The New Chapter of Transonic Compressor Cascade Design at the DLR in another window
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
Publisher: ASME
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
Open the PDF for Numerical Investigation of Near-Tip Modifications for a Highly Loaded Low-Speed Rotor Under the Influence of Double Leakage in another window
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
Publisher: American Society of Mechanical Engineers
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
Open the PDF for Numerical Investigation of 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, 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
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-78443
https://doi.org/10.1115/GT2022-78443
View Paper titled, Numerical Analysis of Blade Platform Leakage in Axial Compressors
Open the PDF for Numerical Analysis of Blade Platform Leakage in Axial Compressors in another window
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
Publisher: American Society of Mechanical Engineers
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
Open the PDF for Design of a Blowing Type Flow Treatment to Complement Casing Treatments for Compact High-Pressure Compressor Rear Stages in another window
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
Publisher: American Society of Mechanical Engineers
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
Open the PDF for Analysis of Cavity Leakage Effects on Coupled Non-Axisymmetric Endwall-Airfoil Optimization in a Low-Speed Compressor Tandem Stator in another window
Topics: Airfoils, Cavities, Compressors, Leakage, Optimization, Stators, Flow (Dynamics), Design, Leakage flows, Geometry