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Proceedings Papers

Integrated Power and Thermal Management System for a Hybrid-Electric Aircraft: Integrated Modelling and Passive Cooling Analysis

Zeyu Ouyang, Theoklis Nikolaidis, Soheil Jafari
Proc. ASME. GT2024, Volume 1: Aircraft Engine, V001T01A002, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-121232
https://doi.org/10.1115/GT2024-121232
View Paper titled, Integrated Power and Thermal Management System for a Hybrid-Electric Aircraft: Integrated Modelling and Passive Cooling Analysis
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Topics: Aircraft, Cooling, Modeling, Thermal management
Proceedings Papers

Implementation of Artificial Intelligence for Aircraft Engine Health Monitoring and Prognostics

Aditya Aditya, Theoklis Nikolaidis, Arias Chao Manuel, Simone Togni
Proc. ASME. GT2024, Volume 4: Controls, Diagnostics, and Instrumentation, V004T05A030, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-127081
https://doi.org/10.1115/GT2024-127081
View Paper titled, Implementation of Artificial Intelligence for Aircraft Engine Health Monitoring and Prognostics
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Topics: Aircraft engines, Artificial intelligence, Condition monitoring, Deep learning, Engines, Convolutional neural networks, Cycles, Flight, Service life (Equipment), Aircraft
Journal Articles

Integrated Power and Thermal Management System for A Hybrid-Electric Aircraft: Integrated Modeling and Passive Cooling Analysis

Zeyu Ouyang, Theoklis Nikolaidis, Soheil Jafari
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2024, 146(11): 111024.
Paper No: GTP-24-1290
https://doi.org/10.1115/1.4066050
Published Online: August 21, 2024
View Article titled, Integrated Power and Thermal Management System for A Hybrid-Electric Aircraft: Integrated Modeling and Passive Cooling Analysis
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Topics: Aircraft, Batteries, Cooling, Design, Engines, Heat, Modeling, Motors, Thermal management, Temperature
Proceedings Papers

Impacts of Alternative Aviation Fuels on Engine Cycle Design and Aircraft Mission Capability

Sarath Sasi, Christos Mourouzidis, Ioannis Roumeliotis, Theoklis Nikolaidis, Vassilios Pachidis, Justin Norman
Proc. ASME. GT2023, Volume 2: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels, V002T03A005, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101114
https://doi.org/10.1115/GT2023-101114
View Paper titled, Impacts of Alternative Aviation Fuels on Engine Cycle Design and Aircraft Mission Capability
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Topics: Aircraft, Aviation, Carbon, Cycles, Design, Engines, Fuels
Proceedings Papers

Comparing Different Schemes in a Combined Technique of Kalman Filter, Artificial Neural Network and Fuzzy Logic for Gas Turbines Online Diagnostics

Simone Togni, Theoklis Nikolaidis, Suresh Sampath
Proc. ASME. GT2022, Volume 2: Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine, V002T05A010, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82037
https://doi.org/10.1115/GT2022-82037
View Paper titled, Comparing Different Schemes in a Combined Technique of Kalman Filter, Artificial Neural Network and Fuzzy Logic for Gas Turbines Online Diagnostics
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Topics: Artificial neural networks, Failure, Filtration, Fuzzy logic, Gas turbines, Kalman filters
Journal Articles

Off-Design Performance Comparison Between Single and Two-Shaft Engines Part 1—Fixed Geometry

Theoklis Nikolaidis, Alvise Pellegrini, Herbert I. H. Saravanamuttoo, Ioanna Aslanidou, Anestis Kalfas, Pericles Pilidis
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2022, 144(8): 081006.
Paper No: GTP-22-1157
https://doi.org/10.1115/1.4054749
Published Online: June 16, 2022
View Article titled, Off-Design Performance Comparison Between Single and Two-Shaft Engines Part 1—Fixed Geometry
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Topics: Cycles, Design, Engines, Thermal efficiency, Compressors, Gas turbines, Stress, Flow (Dynamics)
Proceedings Papers

The Use of Enhanced Nozzle Maps for Gas-Turbine Performance Modelling

Aws A. Al-Akam, Theoklis Nikolaidis, David G. MacManus, Alvise Pellegrini
Proc. ASME. GT2021, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Wind Energy; Scholar Lecture, V001T01A017, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-60029
https://doi.org/10.1115/GT2021-60029
View Paper titled, The Use of Enhanced Nozzle Maps for Gas-Turbine Performance Modelling
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Topics: Aircraft engines, Engines, Gas turbines, Modeling, Nozzles
Proceedings Papers

Physics-Based Thermal Management System Components Design for All-Electric Propulsion Systems

Soheil Jafari, Theoklis Nikolaidis, Roopesh Chowdary Sureddi
Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT13A014, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59995
https://doi.org/10.1115/GT2021-59995
View Paper titled, Physics-Based Thermal Management System Components Design for All-Electric Propulsion Systems
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Topics: Design, Heat losses, Matlab, Physics, Propulsion systems, Thermal management
Proceedings Papers

Comparison of Sodium Sulphate Deposition Rate Models Based on Operational Factors Influencing Hot Corrosion Damage in Aero-Engines

Evangelia Pontika, Panagiotis Laskaridis, Theoklis Nikolaidis, Max Koster
Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET40A001, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15715
https://doi.org/10.1115/GT2020-15715
View Paper titled, Comparison of Sodium Sulphate Deposition Rate Models Based on Operational Factors Influencing Hot Corrosion Damage in Aero-Engines
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Topics: Aircraft engines, Corrosion, Damage, Experimental design, Sodium
Proceedings Papers

Assessment of Surface Roughness Effects on Micro Axial Turbines

Abdelaziz A. A. Gamil, Theoklis Nikolaidis, Joao A. Teixeira, S. H. Madani, Ali Izadi
Proc. ASME. GT2020, Volume 8: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines, V008T20A031, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-16336
https://doi.org/10.1115/GT2020-16336
View Paper titled, Assessment of Surface Roughness Effects on Micro Axial Turbines
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Topics: Blades, Micro gas turbines, Surface roughness, Temperature, Turbines
Proceedings Papers

Physics-Based Thermal Model for Power Gearboxes in Geared Turbofan Engines

Soheil Jafari, Theoklis Nikolaidis, Albert S. J. van Heerden, Craig P. Lawson, David Bosak
Proc. ASME. GT2020, Volume 1: Aircraft Engine; Fans and Blowers, V001T01A021, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14637
https://doi.org/10.1115/GT2020-14637
View Paper titled, Physics-Based Thermal Model for Power Gearboxes in Geared Turbofan Engines
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Topics: Engines, Physics, Turbofans, Flight, Stress, Heat losses, Waste heat, Fuels, Aircraft engines, Emissions
Journal Articles

Benefits, Drawbacks, and Future Trends of Brayton Helium Gas Turbine Cycles for Gas-Cooled Fast Reactor and Very-High Temperature Reactor Generation IV Nuclear Power Plants

Arnold Gad-Briggs, Emmanuel Osigwe, Pericles Pilidis, Theoklis Nikolaidis, Suresh Sampath, Joao Amaral Teixeira
Journal: Journal of Nuclear Engineering and Radiation Science
Publisher: ASME
Article Type: Technical Briefs
ASME J of Nuclear Rad Sci. January 2021, 7(1): 014503.
Paper No: NERS-19-1144
https://doi.org/10.1115/1.4047773
Published Online: October 2, 2020
View Article titled, Benefits, Drawbacks, and Future Trends of Brayton Helium Gas Turbine Cycles for Gas-Cooled Fast Reactor and Very-High Temperature Reactor Generation IV Nuclear Power Plants
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Topics: Cycles, Design, Helium, Nuclear power stations, Temperature, Gas turbines, Coolants, Fast neutron reactors
Journal Articles

Performance Modeling and Analysis of a Single-Shaft Closed-Cycle Gas Turbine Using Different Operational Control Strategy

Emmanuel O. Osigwe, Arnold Gad-Briggs, Dodeye Igbong, Theoklis Nikolaidis, Pericles Pilidis
Journal: Journal of Nuclear Engineering and Radiation Science
Publisher: ASME
Article Type: Research-Article
ASME J of Nuclear Rad Sci. April 2020, 6(2): 021201.
Paper No: NERS-19-1042
https://doi.org/10.1115/1.4044260
Published Online: February 24, 2020
View Article titled, Performance Modeling and Analysis of a Single-Shaft Closed-Cycle Gas Turbine Using Different Operational Control Strategy
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Topics: Cycles, Pressure, Stress, Temperature, Flow (Dynamics), Compressors, Power stations, Heat, Modeling, Closed-cycle gas turbines
Journal Articles

Performance Analyses and Evaluation of Co 2 and N 2 as Coolants in a Recuperated Brayton Gas Turbine Cycle for a Generation IV Nuclear Reactor Power Plant

Emmanuel O. Osigwe, Arnold Gad-Briggs, Theoklis Nikolaidis, Pericles Pilidis, Suresh Sampath
Journal: Journal of Nuclear Engineering and Radiation Science
Publisher: ASME
Article Type: Research-Article
ASME J of Nuclear Rad Sci. April 2020, 6(2): 021102.
Paper No: NERS-18-1125
https://doi.org/10.1115/1.4043589
Published Online: January 29, 2020
View Article titled, Performance Analyses and Evaluation of Co 2 and N 2 as Coolants in a Recuperated Brayton Gas Turbine Cycle for a Generation IV Nuclear Reactor Power Plant
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Topics: Carbon dioxide, Compressors, Cycles, Fluids, Power stations, Pressure, Temperature, Design, Turbines, Generation IV reactors
Journal Articles

Performance Simulation to Understand the Effects of Multifluid Scaling of Gas Turbine Components for Generation IV Nuclear Power Plants

Emmanuel O. Osigwe, Arnold Gad-Briggs, Theoklis Nikolaidis, Pericles Pilidis, Suresh Sampath
Journal: Journal of Nuclear Engineering and Radiation Science
Publisher: ASME
Article Type: Research-Article
ASME J of Nuclear Rad Sci. April 2020, 6(2): 021101.
Paper No: NERS-19-1020
https://doi.org/10.1115/1.4044406
Published Online: January 29, 2020
View Article titled, Performance Simulation to Understand the Effects of Multifluid Scaling of Gas Turbine Components for Generation IV Nuclear Power Plants
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Topics: Design, Fluids, Gas turbines, Nuclear power stations, Simulation, Flow (Dynamics), Pressure, Mach number, Compressors, Turbines
Proceedings Papers

Risk Assessment on Working Fluid Selection for Closed-Cycle Gas Turbine Systems

Emmanuel O. Osigwe, Pericles Pilidis, Theoklis Nikolaidis, Dodeye Igbong
Proc. ASME. POWER2019, ASME 2019 Power Conference, V001T04A001, July 15–18, 2019
Publisher: American Society of Mechanical Engineers
Paper No: POWER2019-1861
https://doi.org/10.1115/POWER2019-1861
View Paper titled, Risk Assessment on Working Fluid Selection for Closed-Cycle Gas Turbine Systems
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Topics: Closed-cycle gas turbines, Fluids, Risk assessment
Journal Articles

Gas Turbine Arekret-Cycle Simulation Modeling for Training and Educational Purposes

Emmanuel O. Osigwe, Pericles Pilidis, Theoklis Nikolaidis, Suresh Sampath
Journal: Journal of Nuclear Engineering and Radiation Science
Publisher: ASME
Article Type: Research-Article
ASME J of Nuclear Rad Sci. October 2019, 5(4): 041207.
Paper No: NERS-19-1002
https://doi.org/10.1115/1.4043681
Published Online: August 2, 2019
View Article titled, Gas Turbine Arekret-Cycle Simulation Modeling for Training and Educational Purposes
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Topics: Closed-cycle gas turbines, Compressors, Computer simulation, Cycles, Design, Engines, Flow (Dynamics), Fluids, Gas turbines, Pressure
Journal Articles

Analyses of the Associated Technical and Economic Risks of the Simple and Intercooled Brayton Helium Recuperated Gas Turbine Cycles for Generation IV Nuclear Power Plants

Arnold Gad-Briggs, Pericles Pilidis, Theoklis Nikolaidis
Journal: Journal of Nuclear Engineering and Radiation Science
Publisher: ASME
Article Type: Research-Article
ASME J of Nuclear Rad Sci. October 2019, 5(4): 041201.
Paper No: NERS-18-1033
https://doi.org/10.1115/1.4042116
Published Online: July 19, 2019
View Article titled, Analyses of the Associated Technical and Economic Risks of the Simple and Intercooled Brayton Helium Recuperated Gas Turbine Cycles for Generation IV Nuclear Power Plants
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Topics: Cycles, Helium, Nuclear power stations, Temperature, Pressure, Financial risk, Design, Risk, Compressors
Proceedings Papers

Multi-Fluid Gas Turbine Components Scaling for a Generation IV Nuclear Power Plant Performance Simulation

Emmanuel O. Osigwe, Arnold Gad-Briggs, Theoklis Nikolaidis, Pericles Pilidis, Suresh Sampath
Proc. ASME. ICONE26, Volume 9: Student Paper Competition, V009T16A080, July 22–26, 2018
Publisher: American Society of Mechanical Engineers
Paper No: ICONE26-82373
https://doi.org/10.1115/ICONE26-82373
View Paper titled, Multi-Fluid Gas Turbine Components Scaling for a Generation IV Nuclear Power Plant Performance Simulation
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Topics: Fluids, Gas turbines, Nuclear power stations, Simulation, Closed-cycle gas turbines, Design, Computer simulation, Engineers, Engines
Proceedings Papers

Performance Analysis of Generation IV Nuclear Reactor Power Plant Using CO 2 and N 2 : Case Study of a Recuperated Brayton Gas Turbine Cycle

Emmanuel O. Osigwe, Arnold Gad-Briggs, Theoklis Nikolaidis, Pericles Pilidis, Suresh Sampath
Proc. ASME. ICONE26, Volume 5: Advanced Reactors and Fusion Technologies; Codes, Standards, Licensing, and Regulatory Issues, V005T05A008, July 22–26, 2018
Publisher: American Society of Mechanical Engineers
Paper No: ICONE26-81337
https://doi.org/10.1115/ICONE26-81337
View Paper titled, Performance Analysis of Generation IV Nuclear Reactor Power Plant Using CO 2 and N 2 : Case Study of a Recuperated Brayton Gas Turbine Cycle
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Topics: Carbon dioxide, Cycles, Gas turbines, Generation IV reactors, Power stations, Fluids, Closed-cycle gas turbines, Design, Nitrogen, Nuclear power