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Proceedings Papers

Design Optimization of Heat Exchangers for Aero Engines With the Use of a Surrogate Model Incorporating Performance Characteristics and Geometrical Constraints

Christina Salpingidou, Dimitrios Misirlis, Zinon Vlahostergios, Michael Flouros, Fabian Donus, Kyros Yakinthos
Proc. ASME. GT2018, Volume 5C: Heat Transfer, V05CT22A004, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76097
https://doi.org/10.1115/GT2018-76097
View Paper titled, Design Optimization of Heat Exchangers for Aero Engines With the Use of a Surrogate Model Incorporating Performance Characteristics and Geometrical Constraints
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Topics: Aircraft engines, Design, Heat exchangers, Optimization, Performance characterization, Fuel consumption, Cycles, Weight (Mass)
Proceedings Papers

Investigation and Assessment of the Performance of Various Recuperative Cycles Based on the Intercooled Recuperation Concept

Christina Salpingidou, Zinon Vlahostergios, Dimitrios Misirlis, Michael Flouros, Fabian Donus, Kyros Yakinthos
Proc. ASME. GT2018, Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems, V003T06A020, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76778
https://doi.org/10.1115/GT2018-76778
View Paper titled, Investigation and Assessment of the Performance of Various Recuperative Cycles Based on the Intercooled Recuperation Concept
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Topics: Aircraft engines, Combustion chambers, Cycles, Design, Emissions, Engines, Fluids, Fuel consumption, Heat recovery, Heat transfer
Journal Articles

Exergy Analysis and Performance Assessment for Different Recuperative Thermodynamic Cycles for Gas Turbine Applications

Christina Salpingidou, Dimitrios Misirlis, Zinon Vlahostergios, Stefan Donnerhack, Michael Flouros, Apostolos Goulas, Kyros Yakinthos
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2018, 140(7): 071701.
Paper No: GTP-17-1342
https://doi.org/10.1115/1.4038362
Published Online: April 10, 2018
View Article titled, Exergy Analysis and Performance Assessment for Different Recuperative Thermodynamic Cycles for Gas Turbine Applications
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Topics: Aircraft engines, Cycles, Exergy, Exergy analysis, Gas turbines, Heat exchangers, Turbines, Thermodynamic cycles, Pressure, Engines
Proceedings Papers

Exergy Analysis and Performance Assessment for Different Recuperative Thermodynamic Cycles for Gas Turbine Applications

Christina Salpingidou, Dimitrios Misirlis, Zinon Vlahostergios, Stefan Donnerhack, Michael Flouros, Apostolos Goulas, Kyros Yakinthos
Proc. ASME. GT2017, Volume 3: Coal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration Applications; Organic Rankine Cycle Power Systems, V003T06A010, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63705
https://doi.org/10.1115/GT2017-63705
View Paper titled, Exergy Analysis and Performance Assessment for Different Recuperative Thermodynamic Cycles for Gas Turbine Applications
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Topics: Exergy analysis, Gas turbines, Thermodynamic cycles, Cycles, Heat exchangers, Turbines, Engines, Exergy, Heat recovery, Aircraft engines
Proceedings Papers

Development, Numerical Investigation and Experimental Validation of a New Recuperator Design for Aero Engines Applications

Zinon Vlahostergios, Dimitrios Misirlis, Michael Flouros, Christina Salpingidou, Stefan Donnerhack, Apostolos Goulas, Kyros Yakinthos
Proc. ASME. GT2017, Volume 2B: Turbomachinery, V02BT41A035, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-64362
https://doi.org/10.1115/GT2017-64362
View Paper titled, Development, Numerical Investigation and Experimental Validation of a New Recuperator Design for Aero Engines Applications
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Topics: Aircraft engines, Design, Exhaust systems, Emissions, Engines, Fuel consumption, Heat exchangers, Nozzles, Pollution, Pressure
Journal Articles

Ejector Application for Scavenging of an Aero Engine Bearing Chamber

Michael Flouros, Christina Salpingidou, Kyros Yakinthos, Markus Hirschmann, Francois Cottier
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2017, 139(10): 101202.
Paper No: GTP-17-1022
https://doi.org/10.1115/1.4036516
Published Online: May 16, 2017
View Article titled, Ejector Application for Scavenging of an Aero Engine Bearing Chamber
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Topics: Bearings, Ejectors, Flow (Dynamics), Nozzles, Pressure, Diffusers
Journal Articles

Two-Phase Flow Pressure Drop in Corrugated Tubes Used in an Aero-engine Oil System

Michael Flouros, Andreas Kanarachos, Kyros Yakinthos, Christina Salpingidou, Francois Cottier
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2016, 138(6): 062603.
Paper No: GTP-15-1423
https://doi.org/10.1115/1.4031627
Published Online: November 17, 2015
View Article titled, Two-Phase Flow Pressure Drop in Corrugated Tubes Used in an Aero-engine Oil System
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Topics: Flow (Dynamics), Pressure drop, Two-phase flow, Pipes, Computation, Water, Pressure, Aircraft engines
Journal Articles

Thermal and Flow Phenomena Associated With the Behavior of Brush Seals in Aero Engine Bearing Chambers

Michael Flouros, Patrick Hendrick, Bilal Outirba, Francois Cottier, Stephan Proestler
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2015, 137(9): 092503.
Paper No: GTP-14-1631
https://doi.org/10.1115/1.4029711
Published Online: September 1, 2015
View Article titled, Thermal and Flow Phenomena Associated With the Behavior of Brush Seals in Aero Engine Bearing Chambers
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Topics: Bearings, Computational fluid dynamics, Finite element analysis, Flow (Dynamics), Pressure, Rotors, Temperature, Aircraft engines, Transients (Dynamics), Pyrometers
Journal Articles

Two-Phase Flow Heat Transfer and Pressure Drop in Horizontal Scavenge Pipes in an Aero-engine

Michael Flouros, Georgios Iatrou, Kyros Yakinthos, Francois Cottier, Markus Hirschmann
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2015, 137(8): 081901.
Paper No: GTP-14-1586
https://doi.org/10.1115/1.4029389
Published Online: August 1, 2015
View Article titled, Two-Phase Flow Heat Transfer and Pressure Drop in Horizontal Scavenge Pipes in an Aero-engine
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Topics: Flow (Dynamics), Heat transfer, Pipes, Pressure drop, Two-phase flow, Temperature
Proceedings Papers

Two-Phase Flow Heat Transfer and Pressure Drop in Horizontal Scavenge Pipes in an Aero Engine

Michael Flouros, Georgios Iatrou, Kyros Yakinthos, Francois Cottier, Markus Hirschmann
Proc. ASME. GT2014, Volume 5C: Heat Transfer, V05CT16A001, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-25011
https://doi.org/10.1115/GT2014-25011
View Paper titled, Two-Phase Flow Heat Transfer and Pressure Drop in Horizontal Scavenge Pipes in an Aero Engine
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Topics: Aircraft engines, Heat transfer, Pipes, Pressure drop, Two-phase flow, Bearings, Flow (Dynamics), Vents, Engines, Heat
Proceedings Papers

Thermal and Flow Phenomena Associated With the Behavior of Brush Seals in Aero Engine Bearing Chambers

Michael Flouros, Patrick Hendrick, Bilal Outirba, Francois Cottier, Stephan Proestler
Proc. ASME. GT2014, Volume 5C: Heat Transfer, V05CT16A012, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-25538
https://doi.org/10.1115/GT2014-25538
View Paper titled, Thermal and Flow Phenomena Associated With the Behavior of Brush Seals in Aero Engine Bearing Chambers
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Topics: Aircraft engines, Bearings, Flow (Dynamics), Rotors, Temperature, Engines, Finite element analysis, Fuels, Gas turbines, Heat
Proceedings Papers

Transient Temperature Measurements in the Contact Zone Between Brush Seals of Kevlar and Metallic Type for Bearing Chamber Sealing Using a Pyrometric Technique

Michael Flouros, Martin Stadlbauer, Francois Cottier, Stephan Proestler, Stefan Beichl
Proc. ASME. GT2012, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation, 73-80, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68354
https://doi.org/10.1115/GT2012-68354
View Paper titled, Transient Temperature Measurements in the Contact Zone Between Brush Seals of Kevlar and Metallic Type for Bearing Chamber Sealing Using a Pyrometric Technique
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Topics: Bearings, Sealing (Process), Temperature measurement, Transients (Dynamics), Rotors, Aircraft engines, Temperature, Contamination, Aeronautics, Air conditioning
Proceedings Papers

Active Outer Ring Cooling of High Loaded and High Speed Ball Bearings

Michael Flouros, Markus Hirschmann, Francois Cottier, Peter Gloeckner, Klaus Dullenkopf
Proc. ASME. GT2012, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation, 1-8, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68138
https://doi.org/10.1115/GT2012-68138
View Paper titled, Active Outer Ring Cooling of High Loaded and High Speed Ball Bearings
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Topics: Ball bearings, Cooling, Bearings, Heat, Aircraft engines, Centrifugal force, Design, Fins, Flow (Dynamics), Friction
Proceedings Papers

Ejector Scavenging of Bearing Chambers: A Numerical and Experimental Investigation

Michael Flouros, Francois Cottier, Markus Hirschmann, Joachim Kutz, Agnes Jocher
Proc. ASME. GT2012, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation, 9-15, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68139
https://doi.org/10.1115/GT2012-68139
View Paper titled, Ejector Scavenging of Bearing Chambers: A Numerical and Experimental Investigation
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Topics: Bearings, Ejectors, Engines, Pumps, Aircraft engines, Design, System architecture, Aeronautics, Dimensional analysis, Flow (Dynamics)
Journal Articles

Transient Temperature Measurements in the Contact Zone Between Brush Seals of Kevlar and Metallic Type for Bearing Chamber Sealing Using a Pyrometric Technique

Michael Flouros, Martin Stadlbauer, Francois Cottier, Stephan Proestler, Stefan Beichl
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2013, 135(8): 081603.
Paper No: GTP-13-1065
https://doi.org/10.1115/1.4024258
Published Online: June 25, 2013
View Article titled, Transient Temperature Measurements in the Contact Zone Between Brush Seals of Kevlar and Metallic Type for Bearing Chamber Sealing Using a Pyrometric Technique
Open the PDF for Transient Temperature Measurements in the Contact Zone Between Brush Seals of Kevlar and Metallic Type for Bearing Chamber Sealing Using a Pyrometric Technique in another window
Topics: Bearings, Pyrometers, Rotors, Sealing (Process), Temperature, Transients (Dynamics), Temperature measurement, Pressure, Radiation (Physics), Fibers
Journal Articles

Ejector Scavenging of Bearing Chambers. A Numerical and Experimental Investigation

Michael Flouros, Francois Cottier, Markus Hirschmann, Joachim Kutz, Agnes Jocher
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2013, 135(8): 081602.
Paper No: GTP-13-1066
https://doi.org/10.1115/1.4024259
Published Online: June 24, 2013
View Article titled, Ejector Scavenging of Bearing Chambers. A Numerical and Experimental Investigation
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Topics: Bearings, Ejectors, Flow (Dynamics)
Journal Articles

Active Outer Ring Cooling of High-Loaded and High-Speed Ball Bearings

Michael Flouros, Markus Hirschmann, Francois Cottier, Peter Gloeckner, Klaus Dullenkopf
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2013, 135(8): 081902.
Paper No: GTP-13-1062
https://doi.org/10.1115/1.4024257
Published Online: June 24, 2013
View Article titled, Active Outer Ring Cooling of High-Loaded and High-Speed Ball Bearings
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Topics: Ball bearings, Bearings, Cooling, Flow (Dynamics), Temperature, Heat, Heat transfer
Journal Articles

Direct Outer Ring Cooling of a High Speed Jet Engine Mainshaft Ball Bearing: Experimental Investigation Results

Peter Gloeckner, Klaus Dullenkopf, Michael Flouros
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. June 2011, 133(6): 062503.
https://doi.org/10.1115/1.4002355
Published Online: February 17, 2011
View Article titled, Direct Outer Ring Cooling of a High Speed Jet Engine Mainshaft Ball Bearing: Experimental Investigation Results
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Topics: Ball bearings, Bearings, Cooling, Flow (Dynamics), Temperature, Jet engines, Stress, Heat
Proceedings Papers

Direct Outer Ring Cooling of a High Speed Jet Engine Mainshaft Ball Bearing: Experimental Investigation Results

Peter Gloeckner, Klaus Dullenkopf, Michael Flouros
Proc. ASME. GT2010, Volume 4: Heat Transfer, Parts A and B, 1209-1216, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-23312
https://doi.org/10.1115/GT2010-23312
View Paper titled, Direct Outer Ring Cooling of a High Speed Jet Engine Mainshaft Ball Bearing: Experimental Investigation Results
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Topics: Ball bearings, Cooling, Jet engines, Bearings, Aircraft propulsion, Energy dissipation, Flight, Reliability, Stress, Temperature
Journal Articles

Impact of Screens Around Bearings on the Flow and Heat Transfer in the Vent and Scavenge Oil Pipes in Bearing Chambers

Michael Flouros, Francois Cottier
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. March 2011, 133(3): 032503.
https://doi.org/10.1115/1.4002153
Published Online: November 12, 2010
View Article titled, Impact of Screens Around Bearings on the Flow and Heat Transfer in the Vent and Scavenge Oil Pipes in Bearing Chambers
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Topics: Bearings, Flow (Dynamics), Pipes, Vents, Heat transfer, Computational fluid dynamics, Temperature