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Proceedings Papers

APU-Noise Reduction by Novel Muffler Concepts

Karsten Knobloch, Lars Enghardt, Friedrich Bake
Proc. ASME. GT2018, Volume 2B: Turbomachinery, V02BT43A009, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76762
https://doi.org/10.1115/GT2018-76762
View Paper titled, APU-Noise Reduction by Novel Muffler Concepts
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Topics: Noise (Sound), Silencers, Cavities, Design, Flow (Dynamics), Absorption, Acoustics, Damping, Ducts, Microphones
Journal Articles

Experimental Investigation of Cycle Properties, Noise, and Air Pollutant Emissions of an APS3200 Auxiliary Power Unit

Teresa Siebel, Jan Zanger, Andreas Huber, Manfred Aigner, Karsten Knobloch, Friedrich Bake
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2018, 140(6): 061201.
Paper No: GTP-17-1390
https://doi.org/10.1115/1.4038159
Published Online: February 13, 2018
View Article titled, Experimental Investigation of Cycle Properties, Noise, and Air Pollutant Emissions of an APS3200 Auxiliary Power Unit
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Topics: Emissions, Exhaust systems, Flow (Dynamics), Noise (Sound), Stress, Temperature, Pressure, Nitrogen oxides, Cycles, Fuels
Proceedings Papers

Experimental Investigation of Cycle Properties, Noise and Air Pollutant Emissions of an APS3200 Auxiliary Power Unit

Teresa Siebel, Jan Zanger, Andreas Huber, Manfred Aigner, Karsten Knobloch, Friedrich Bake
Proc. ASME. GT2017, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Honors and Awards, V001T01A012, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63523
https://doi.org/10.1115/GT2017-63523
View Paper titled, Experimental Investigation of Cycle Properties, Noise and Air Pollutant Emissions of an APS3200 Auxiliary Power Unit
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Topics: Air pollution, Cycles, Emissions, Noise (Sound), Exhaust systems, Aircraft, Flow (Dynamics), Optimization, Stress, Acoustics
Journal Articles

Experimental Assessment of Noise Generation and Transmission in a High-Pressure Transonic Turbine Stage

Karsten Knobloch, Lars Neuhaus, Friedrich Bake, Paolo Gaetani, Giacomo Persico
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. October 2017, 139(10): 101006.
Paper No: TURBO-16-1278
https://doi.org/10.1115/1.4036344
Published Online: May 9, 2017
View Article titled, Experimental Assessment of Noise Generation and Transmission in a High-Pressure Transonic Turbine Stage
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Topics: Acoustics, Entropy, Excitation, Flow (Dynamics), Noise (Sound), Rotors, Stators, Turbines, Vorticity, Waves
Proceedings Papers

Experimental Assessment of Noise Generation and Transmission in a High-Pressure Transonic Turbine Stage

Karsten Knobloch, Lars Neuhaus, Friedrich Bake, Paolo Gaetani, Giacomo Persico
Proc. ASME. GT2016, Volume 2A: Turbomachinery, V02AT41A007, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57209
https://doi.org/10.1115/GT2016-57209
View Paper titled, Experimental Assessment of Noise Generation and Transmission in a High-Pressure Transonic Turbine Stage
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Topics: High pressure (Physics), Noise (Sound), Turbines, Acoustics, Aircraft engines, Combustion, Combustion chambers, Engines, Entropy, Excitation
Proceedings Papers

Noise Generation in Hot Nozzle Flow

Karsten Knobloch, Tiago Werner, Friedrich Bake
Proc. ASME. GT2015, Volume 2B: Turbomachinery, V02BT41A012, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43702
https://doi.org/10.1115/GT2015-43702
View Paper titled, Noise Generation in Hot Nozzle Flow
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Topics: Flow (Dynamics), Noise (Sound), Nozzles, Combustion, Mach number, Acoustics, Aerospace industry, Combustion chambers, Entropy, Fluctuations (Physics)
Proceedings Papers

Full-Scale Tests on APU Noise Reduction

Karsten Knobloch, André Fischer, Friedrich Bake, Lars Enghardt, Stefan Busse-Gerstengarbe
Proc. ASME. GT2014, Volume 2A: Turbomachinery, V02AT41A011, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-26803
https://doi.org/10.1115/GT2014-26803
View Paper titled, Full-Scale Tests on APU Noise Reduction
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Topics: Noise control, Emissions, Exhaust systems, Noise (Sound), Silencers, Aircraft, Control systems, Engines, Microphones
Proceedings Papers

Acoustic Measurements of Perforated Liners in Hot and Pressurized Flow

Claus Lahiri, Karsten Knobloch, Friedrich Bake, Lars Enghardt
Proc. ASME. GT2013, Volume 1A: Combustion, Fuels and Emissions, V01AT04A045, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-94674
https://doi.org/10.1115/GT2013-94674
View Paper titled, Acoustic Measurements of Perforated Liners in Hot and Pressurized Flow
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Topics: Acoustics, Flow (Dynamics), Combustion chambers, Temperature, Design, High pressure (Physics), High temperature, Pressure, Testing, Absorption
Proceedings Papers

Hot-Acoustic-Testrig (HAT): A Unique Facility for Thermoacoustic Research

Karsten Knobloch, Claus Lahiri, Lars Enghardt, Friedrich Bake, Dieter Peitsch
Proc. ASME. GT2011, Volume 7: Turbomachinery, Parts A, B, and C, 1023-1032, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-45705
https://doi.org/10.1115/GT2011-45705
View Paper titled, Hot-Acoustic-Testrig (HAT): A Unique Facility for Thermoacoustic Research
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Topics: Acoustics, Flow (Dynamics), Boundary-value problems, Damping, Gas turbines, Instrumentation, Pressure, Temperature, Test facilities
Journal Articles

Establishment of a High Quality Database for the Acoustic Modeling of Perforated Liners

Claus Lahiri, Lars Enghardt, Friedrich Bake, Sermed Sadig, Miklós Gerendás
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. September 2011, 133(9): 091503.
https://doi.org/10.1115/1.4002891
Published Online: April 20, 2011
View Article titled, Establishment of a High Quality Database for the Acoustic Modeling of Perforated Liners
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Topics: Acoustics, Damping, Flow (Dynamics), Porosity, Databases, Pressure, Ducts, Mach number, Energy dissipation, Orifices
Proceedings Papers

Establishment of a High Quality Database for the Modelling of Perforated Liners

Claus Heuwinkel, Lars Enghardt, Friedrich Bake, Sermed Sadig, Miklo´s Gerenda´s
Proc. ASME. GT2010, Volume 2: Combustion, Fuels and Emissions, Parts A and B, 247-258, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22329
https://doi.org/10.1115/GT2010-22329
View Paper titled, Establishment of a High Quality Database for the Modelling of Perforated Liners
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Topics: Databases, Modeling, Damping, Acoustics, Flow (Dynamics), Combustion, Combustion chambers, Emissions, Engines, Fluids
Proceedings Papers

Measurements of Density Pulsations in the Outlet Nozzle of a Combustion Chamber by Rayleigh-Scattering Searching Entropy Waves

Anne Rausch, Andre Fischer, Holger Konle, Andrea Gaertlein, Steffen Nitsch, Karsten Knobloch, Friedrich Bake, Ingo Ro¨hle
Proc. ASME. GT2010, Volume 3: Controls, Diagnostics and Instrumentation; Cycle Innovations; Marine, 67-78, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22492
https://doi.org/10.1115/GT2010-22492
View Paper titled, Measurements of Density Pulsations in the Outlet Nozzle of a Combustion Chamber by Rayleigh-Scattering Searching Entropy Waves
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Topics: Combustion chambers, Density, Entropy, Nozzles, Optical measurement, Oscillations, Rayleigh scattering, Waves
Journal Articles

Measurements of Density Pulsations in the Outlet Nozzle of a Combustion Chamber by Rayleigh-Scattering Searching Entropy Waves

Anne Rausch, Andre Fischer, Holger Konle, Andrea Gaertlein, Steffen Nitsch, Karsten Knobloch, Friedrich Bake, Ingo Röhle
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. March 2011, 133(3): 031601.
https://doi.org/10.1115/1.4002018
Published Online: November 10, 2010
View Article titled, Measurements of Density Pulsations in the Outlet Nozzle of a Combustion Chamber by Rayleigh-Scattering Searching Entropy Waves
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Topics: Combustion chambers, Density, Entropy, Nozzles, Oscillations, Rayleigh scattering, Waves, Pressure, Combustion, Acoustics
Proceedings Papers

Broadband Entropy Noise Phenomena in a Gas Turbine Combustor

Andre´ Fischer, Friedrich Bake, Ingo Ro¨hle
Proc. ASME. GT2008, Volume 6: Turbomachinery, Parts A, B, and C, 795-803, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-50263
https://doi.org/10.1115/GT2008-50263
View Paper titled, Broadband Entropy Noise Phenomena in a Gas Turbine Combustor
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Topics: Combustion chambers, Entropy, Gas turbines, Noise (Sound), Aircraft engines, Emissions, Flow (Dynamics), Acoustics, Exhaust systems, Flames
Proceedings Papers

Flow and Mixing in a Model GT Combustor Investigated by LES and Monte-Carlo Filtered PDF Methods

Clemens Olbricht, Frederik Hahn, Jens Ku¨hne, Amsini Sadiki, Johannes Janicka, Friedrich Bake, Ingo Ro¨hle
Proc. ASME. GT2007, Volume 2: Turbo Expo 2007, 157-167, May 14–17, 2007
Publisher: American Society of Mechanical Engineers
Paper No: GT2007-27270
https://doi.org/10.1115/GT2007-27270
View Paper titled, Flow and Mixing in a Model GT Combustor Investigated by LES and Monte-Carlo Filtered PDF Methods
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Topics: Combustion chambers, Flow (Dynamics), Gas turbines, Chemical kinetics, Chemistry, Combustion, Cross-flow, Density, Dynamics (Mechanics), Emissions
Proceedings Papers

Fundamental Mechanism of Entropy Noise in Aero-Engines: Experimental Investigation

Friedrich Bake, Ulf Michel, Ingo Roehle
Proc. ASME. GT2007, Volume 6: Turbo Expo 2007, Parts A and B, 1445-1453, May 14–17, 2007
Publisher: American Society of Mechanical Engineers
Paper No: GT2007-27300
https://doi.org/10.1115/GT2007-27300
View Paper titled, Fundamental Mechanism of Entropy Noise in Aero-Engines: Experimental Investigation
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Topics: Aircraft engines, Entropy, Noise (Sound), Nozzles, Heating, Mach number, Waves, Combustion chambers, Flow (Dynamics), Generators
Proceedings Papers

A Study of Noise Generation by Turbulent Flow Instabilities in a Gas Turbine Model Combustor

Clemens Olbricht, Felix Flemming, Amsini Sadiki, Johannes Janicka, Friedrich Bake, Ulf Michel, Ingo Ro¨hle
Proc. ASME. GT2005, Volume 2: Turbo Expo 2005, 729-738, June 6–9, 2005
Publisher: American Society of Mechanical Engineers
Paper No: GT2005-69029
https://doi.org/10.1115/GT2005-69029
View Paper titled, A Study of Noise Generation by Turbulent Flow Instabilities in a Gas Turbine Model Combustor
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Topics: Combustion chambers, Gas turbines, Noise (Sound), Turbulence, Combustion, Flow (Dynamics), Acoustics, Flow instability, Large eddy simulation, Noise control
Proceedings Papers

Investigation of Entropy Noise in Aero-Engine Combustors

Friedrich Bake, Ulf Michel, Ingo Roehle
Proc. ASME. GT2006, Volume 1: Combustion and Fuels, Education, 67-76, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90093
https://doi.org/10.1115/GT2006-90093
View Paper titled, Investigation of Entropy Noise in Aero-Engine Combustors
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Topics: Aircraft engines, Combustion chambers, Entropy, Noise (Sound), Combustion, Excitation, Heating, Nozzles, Acoustics, Computer simulation
Journal Articles

Fundamental Mechanism of Entropy Noise in Aero-Engines: Experimental Investigation

Friedrich Bake, Nancy Kings, Ingo Roehle
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 2008, 130(1): 011202.
https://doi.org/10.1115/1.2749286
Published Online: January 9, 2008
View Article titled, Fundamental Mechanism of Entropy Noise in Aero-Engines: Experimental Investigation
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Topics: Entropy, Noise (Sound), Nozzles, Mach number, Waves, Flow (Dynamics), Heating
Journal Articles

Investigation of Entropy Noise in Aero-Engine Combustors

Friedrich Bake, Ulf Michel, Ingo Roehle
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. April 2007, 129(2): 370–376.
https://doi.org/10.1115/1.2364193
Published Online: February 1, 2006
View Article titled, Investigation of Entropy Noise in Aero-Engine Combustors
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Topics: Combustion chambers, Entropy, Noise (Sound), Nozzles, Waves, Microphones, Excitation, Heating, Combustion, Signals