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Friedrich-Karl Benra
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Proceedings Papers

Experimental Damping Behavior of Strongly Coupled Structure and Acoustic Modes of a Rotating Disk With Side Cavities

Botond Barabas, Friedrich-Karl Benra, Nico Petry, Dieter Brillert
Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT23A004, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58782
https://doi.org/10.1115/GT2021-58782
View Paper titled, Experimental Damping Behavior of Strongly Coupled Structure and Acoustic Modes of a Rotating Disk With Side Cavities
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Topics: Acoustics, Cavities, Damping, Fluid structure interaction, Rotating disks
Proceedings Papers

Model Validation of an Euler-Based 2D-Throughflow Approach for Multistage Axial Turbine Analysis

Sebastian Föllner, Volker Amedick, Bernhard Bonhoff, Dieter Brillert, Friedrich-Karl Benra
Proc. ASME. GT2020, Volume 2C: Turbomachinery, V02CT35A055, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-16229
https://doi.org/10.1115/GT2020-16229
View Paper titled, Model Validation of an Euler-Based 2D-Throughflow Approach for Multistage Axial Turbine Analysis
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Topics: Flow (Dynamics), Model validation, Nozzles, Turbines, Blades, Simulation, Computation, Fluids, Flux (Metallurgy), Shock (Mechanics)
Journal Articles

Turbomachine Design for Supercritical Carbon Dioxide Within the sCO2-HeRo.eu Project

Alexander Hacks, Sebastian Schuster, Hans Josef Dohmen, Friedrich-Karl Benra, Dieter Brillert
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2018, 140(12): 121017.
Paper No: GTP-18-1295
https://doi.org/10.1115/1.4040861
Published Online: November 29, 2018
View Article titled, Turbomachine Design for Supercritical Carbon Dioxide Within the sCO2-HeRo.eu Project
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Topics: Compressors, Design, Turbomachinery, Supercritical carbon dioxide, Generators, Impellers
Journal Articles

Condensation in Radial Turbines—Part I: Mathematical Modeling

Sebastian Schuster, Dieter Brillert, Friedrich-Karl Benra
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. October 2018, 140(10): 101001.
Paper No: TURBO-17-1032
https://doi.org/10.1115/1.4040934
Published Online: September 28, 2018
View Article titled, Condensation in Radial Turbines—Part I: Mathematical Modeling
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Topics: Drops, Flow (Dynamics), Turbines, Liquid films, Condensation
Journal Articles

Condensation in Radial Turbines—Part II: Application of the Mathematical Model to a Radial Turbine Series

Sebastian Schuster, Dieter Brillert, Friedrich-Karl Benra
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. October 2018, 140(10): 101002.
Paper No: TURBO-17-1033
https://doi.org/10.1115/1.4040935
Published Online: September 28, 2018
View Article titled, Condensation in Radial Turbines—Part II: Application of the Mathematical Model to a Radial Turbine Series
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Topics: Condensation, Drops, Impellers, Subcooling, Turbines, Flow (Dynamics), Liquid films, Pressure, Blades
Proceedings Papers

Damping Behavior of Acoustic Dominant Modes in an Aeroacoustic Test Rig Representing a Simplified Geometry of a High Pressure Radial Compressor

Botond Barabas, Dieter Brillert, Hans Josef Dohmen, Friedrich-Karl Benra
Proc. ASME. GT2018, Volume 7C: Structures and Dynamics, V07CT36A018, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76629
https://doi.org/10.1115/GT2018-76629
View Paper titled, Damping Behavior of Acoustic Dominant Modes in an Aeroacoustic Test Rig Representing a Simplified Geometry of a High Pressure Radial Compressor
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Topics: Acoustics, Compressors, Damping, Geometry, High pressure (Physics), Pressure, Design, Excitation, Fluid pressure, Fluids
Proceedings Papers

Thermodynamic Modelling Aspects of Wet Compression in Radial Compressors

Sebastian Schuster, Dieter Brillert, Viktor Hermes, Attilla Yildiz, Friedrich-Karl Benra
Proc. ASME. GT2018, Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy, V009T27A024, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76429
https://doi.org/10.1115/GT2018-76429
View Paper titled, Thermodynamic Modelling Aspects of Wet Compression in Radial Compressors
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Topics: Compression, Compressors, Modeling, Evaporative cooling, Impellers, Entropy, Cooling, Design, Gases, Heat
Proceedings Papers

Turbomachine Design for Supercritical Carbon Dioxide Within the sCO 2 -HeRo.EU Project

Alexander Hacks, Sebastian Schuster, Hans Josef Dohmen, Friedrich-Karl Benra, Dieter Brillert
Proc. ASME. GT2018, Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy, V009T38A003, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75154
https://doi.org/10.1115/GT2018-75154
View Paper titled, Turbomachine Design for Supercritical Carbon Dioxide Within the sCO 2 -HeRo.EU Project
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Topics: Design, Supercritical carbon dioxide, Turbomachinery, Compressors, Impellers, Bearings, Brayton cycle, Compressor impellers, Cooling, Cycles
Proceedings Papers

Coupled Thermal-Structural-Fluid Numerical Analysis of Gas Lubricated Mechanical Seals

Jingjing Luo, Hans Josef Dohmen, Friedrich-Karl Benra
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A014, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75458
https://doi.org/10.1115/GT2018-75458
View Paper titled, Coupled Thermal-Structural-Fluid Numerical Analysis of Gas Lubricated Mechanical Seals
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Topics: Fluids, Numerical analysis, Pressure, Sealing (Process), Design, Deflection, Deformation, Film thickness, Flow (Dynamics), Gas compressors
Proceedings Papers

Investigation on the Influence of Surface Roughness on the Moment Coefficient in a Rotor-Stator Cavity With Centripetal Through-Flow

Bo Hu, Dieter Brillert, Hans Josef Dohmen, Friedrich-Karl Benra
Proc. ASME. FEDSM2017, Volume 1A, Symposia: Keynotes; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Fluid Machinery; Industrial and Environmental Applications of Fluid Mechanics; Pumping Machinery, V01AT03A001, July 30–August 3, 2017
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2017-69018
https://doi.org/10.1115/FEDSM2017-69018
View Paper titled, Investigation on the Influence of Surface Roughness on the Moment Coefficient in a Rotor-Stator Cavity With Centripetal Through-Flow
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Topics: Cavities, Flow (Dynamics), Rotors, Stators, Surface roughness, Impellers, Pumps, Turbines, Design, Leakage flows
Proceedings Papers

PDA Measurements in Spray Generated by Twin-Jet-Nozzles

Inez von Deschwanden, Friedrich-Karl Benra, Hans Josef Dohmen, Dieter Brillert
Proc. ASME. FEDSM2017, Volume 1B, Symposia: Fluid Measurement and Instrumentation; Fluid Dynamics of Wind Energy; Renewable and Sustainable Energy Conversion; Energy and Process Engineering; Microfluidics and Nanofluidics; Development and Applications in Computational Fluid Dynamics; DNS/LES and Hybrid RANS/LES Methods, V01BT06A001, July 30–August 3, 2017
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2017-69003
https://doi.org/10.1115/FEDSM2017-69003
View Paper titled, PDA Measurements in Spray Generated by Twin-Jet-Nozzles
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Topics: Nozzles, Sprays, Drops, Lasers, Signals, Collisions (Physics), Data acquisition, Jets, Measurement systems, Optical measurement
Journal Articles

Clarifying the Physics of Flow Separations in Steam Turbine Inlet Valves at Part Load Operation and Improved Design Considerations

Clemens Bernhard Domnick, Dieter Brillert, Christian Musch, Friedrich-Karl Benra
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. August 2017, 139(8): 081105.
Paper No: FE-16-1748
https://doi.org/10.1115/1.4036263
Published Online: June 5, 2017
View Article titled, Clarifying the Physics of Flow Separations in Steam Turbine Inlet Valves at Part Load Operation and Improved Design Considerations
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Topics: Flow (Dynamics), Pressure, Valves, Diffusers, Flow separation
Journal Articles

Investigation on Flow-Induced Vibrations of a Steam Turbine Inlet Valve Considering Fluid–Structure Interaction Effects

Clemens Bernhard Domnick, Friedrich-Karl Benra, Dieter Brillert, Hans Josef Dohmen, Christian Musch
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2017, 139(2): 022507.
Paper No: GTP-16-1260
https://doi.org/10.1115/1.4034352
Published Online: September 20, 2016
View Article titled, Investigation on Flow-Induced Vibrations of a Steam Turbine Inlet Valve Considering Fluid–Structure Interaction Effects
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Topics: Flow (Dynamics), Valves, Pressure, Vibration, Computational fluid dynamics
Proceedings Papers

Investigation on Flow Induced Vibrations of a Steam Turbine Inlet Valve Considering Fluid Structure Interaction Effects

Clemens Bernhard Domnick, Friedrich-Karl Benra, Dieter Brillert, Hans Josef Dohmen, Christian Musch
Proc. ASME. GT2016, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T26A010, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56314
https://doi.org/10.1115/GT2016-56314
View Paper titled, Investigation on Flow Induced Vibrations of a Steam Turbine Inlet Valve Considering Fluid Structure Interaction Effects
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Topics: Flow (Dynamics), Fluid structure interaction, Steam turbines, Valves, Vibration, Engineering simulation, Feedback, Fluctuations (Physics), Fluid dynamics, Pressure
Proceedings Papers

Comparison of Different Numerical Approaches for Determination of Compressible Fluid Flow in Narrow Gaps

Alexander Kefalas, Friedrich-Karl Benra, Dieter Brillert, Hans Josef Dohmen
Proc. ASME. GT2016, Volume 2C: Turbomachinery, V02CT39A051, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57898
https://doi.org/10.1115/GT2016-57898
View Paper titled, Comparison of Different Numerical Approaches for Determination of Compressible Fluid Flow in Narrow Gaps
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Topics: Bearings, Compressible flow, Computational fluid dynamics, Computer software, Design, Engineering simulation, Flow (Dynamics), Fluid dynamics, Fluid films, Fluid mechanics
Proceedings Papers

Numerical Investigation on the Vibration of Steam Turbine Inlet Valves and the Feedback to the Dynamic Flow Field

Clemens Bernhard Domnick, Friedrich-Karl Benra, Dieter Brillert, Hans Josef Dohmen, Christian Musch
Proc. ASME. GT2015, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T26A004, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42182
https://doi.org/10.1115/GT2015-42182
View Paper titled, Numerical Investigation on the Vibration of Steam Turbine Inlet Valves and the Feedback to the Dynamic Flow Field
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Topics: Feedback, Flow (Dynamics), Steam turbines, Valves, Vibration, Structural dynamics, Computational fluid dynamics, Finite element model, Piston rings, Bushings
Journal Articles

Numerical Investigation on the Time-Variant Flow Field and Dynamic Forces Acting in Steam Turbine Inlet Valves

Clemens Bernhard Domnick, Friedrich-Karl Benra, Dieter Brillert, Hans Josef Dohmen, Christian Musch
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2015, 137(8): 081601.
Paper No: GTP-14-1452
https://doi.org/10.1115/1.4029309
Published Online: August 1, 2015
View Article titled, Numerical Investigation on the Time-Variant Flow Field and Dynamic Forces Acting in Steam Turbine Inlet Valves
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Topics: Flow (Dynamics), Pressure, Valves, Diffusers, Acoustics, Fluctuations (Physics)
Proceedings Papers

Numerical Analysis of Compressible Fluid Flow in Narrow Gaps

Alexander Kefalas, Friedrich-Karl Benra, Hans Josef Dohmen
Proc. ASME. FEDSM2014, Volume 1B, Symposia: Fluid Machinery; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in Aerospace; Flow Manipulation and Active Control: Theory, Experiments and Implementation; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows, V01BT10A044, August 3–7, 2014
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2014-22002
https://doi.org/10.1115/FEDSM2014-22002
View Paper titled, Numerical Analysis of Compressible Fluid Flow in Narrow Gaps
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Topics: Compressible flow, Computer simulation, Computer software, Design, Flow (Dynamics), Fluid dynamics, Fluid films, Fluid mechanics, Fluids, Numerical analysis
Proceedings Papers

Analyze of the Size of Secondary Droplets due to Film Separation at the Blade Trailing Edge

Hans Josef Dohmen, Friedrich-Karl Benra, Cornelius Schepers, Sebastian Schuster
Proc. ASME. FEDSM2014, Volume 1B, Symposia: Fluid Machinery; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in Aerospace; Flow Manipulation and Active Control: Theory, Experiments and Implementation; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows, V01BT10A006, August 3–7, 2014
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2014-21128
https://doi.org/10.1115/FEDSM2014-21128
View Paper titled, Analyze of the Size of Secondary Droplets due to Film Separation at the Blade Trailing Edge
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Topics: Blades, Drops, Separation (Technology), Fluids, Lubrication theory, Compressors, Computational fluid dynamics, Film flow, Flow (Dynamics), Inlet guide vanes
Proceedings Papers

Numerical Investigation on the Time-Variant Flow Field and Dynamic Forces Acting in Steam Turbine Inlet Valves

Clemens Bernhard Domnick, Friedrich-Karl Benra, Hans Josef Dohmen, Christian Musch
Proc. ASME. GT2014, Volume 1B: Marine; Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V01BT27A019, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-25632
https://doi.org/10.1115/GT2014-25632
View Paper titled, Numerical Investigation on the Time-Variant Flow Field and Dynamic Forces Acting in Steam Turbine Inlet Valves
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Topics: Flow (Dynamics), Steam turbines, Valves, Acoustics, Pressure, Unsteady flow, Computational fluid dynamics, Geometry, Power stations, Reynolds-averaged Navier–Stokes equations