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Intelligent Optimisation of Heat Treatment Strategies for Additively Manufactured Maraging Steel (2025)
Presentation / Conference Contribution
Urquhart, N., Kourousis, K., & Tingas, S. (2025, September). Intelligent Optimisation of Heat Treatment Strategies for Additively Manufactured Maraging Steel. Presented at 24th UK Workshop on Computational Intelligence, Edinburgh

Applying heat treatment to metal (heating to a specific temperature for a set duration) can alter its properties making it suitable for use in specific applications. Due to the costs of heating then testing the metal, it is desirable to minimise... Read More about Intelligent Optimisation of Heat Treatment Strategies for Additively Manufactured Maraging Steel.

Optimisation of Aircraft Maintenance Schedules (2025)
Presentation / Conference Contribution
Urquhart, N., Rahimi, A., & Tingas, S. (2025, September). Optimisation of Aircraft Maintenance Schedules. Presented at 24th UK Workshop on Computational Intelligence, Edinburgh

We present an aircraft maintenance scheduling problem, which requires suitably qualified staff to be assigned to maintenance tasks on each aircraft. The tasks on each aircraft must be completed within a given turn around window, so that the aircraft... Read More about Optimisation of Aircraft Maintenance Schedules.

Computational analysis of an ammonia-fuelled hybrid solid oxide fuel cell–gas turbine propulsion system for commercial aviation (2025)
Journal Article
Wagner, L., & Tingas, E.-A. (2025). Computational analysis of an ammonia-fuelled hybrid solid oxide fuel cell–gas turbine propulsion system for commercial aviation. Energy Conversion and Management, 336, Article 119861. https://doi.org/10.1016/j.enconman.2025.119861

This study investigates the performance of a hybrid solid oxide fuel cell–gas turbine (SOFC-GT) propulsion system for commercial aviation, using ammonia–hydrogen blends as fuel. A computational model was developed by combining NASA’s T-MATS toolbox w... Read More about Computational analysis of an ammonia-fuelled hybrid solid oxide fuel cell–gas turbine propulsion system for commercial aviation.

A Computational Study of a Solid Oxide Fuel Cell-Turbofan Engine Hybrid Propulsion System Fueled by Ammonia and Hydrogen (2025)
Presentation / Conference Contribution
Wagner, L., & Tingas, E.-A. (2025, January). A Computational Study of a Solid Oxide Fuel Cell-Turbofan Engine Hybrid Propulsion System Fueled by Ammonia and Hydrogen. Presented at AIAA SCITECH 2025 Forum, Orlando, Florida

This study presents the theoretical evaluation of a hybrid aero-propulsion system that combines a Solid Oxide Fuel Cell (SOFC) with a commercial turbofan engine (JT9D), fuelled by an ammonia and hydrogen fuel blend, the latter produced by an onboard... Read More about A Computational Study of a Solid Oxide Fuel Cell-Turbofan Engine Hybrid Propulsion System Fueled by Ammonia and Hydrogen.

Computational Investigation of Laminar Premixed Hydrogen/Ammonia Flames at Sub-Atmospheric Conditions (2025)
Presentation / Conference Contribution
Tule, D., & Tingas, E.-A. (2025, January). Computational Investigation of Laminar Premixed Hydrogen/Ammonia Flames at Sub-Atmospheric Conditions. Presented at AIAA SCITECH 2025 Forum, Orlando, Florida

The increasing urgency to address global warming has highlighted the need to explore alternative fuels for the transport sector, a significant contributor to carbonemissions. Hydrogen and ammonia have emerged as promising candidates, each with distin... Read More about Computational Investigation of Laminar Premixed Hydrogen/Ammonia Flames at Sub-Atmospheric Conditions.

A computational study of the use of hydrogen peroxide as pilot fuel for a homogeneous mixture of ammonia/hydrogen in a compression ignition engine (2024)
Journal Article
Tingas, E.-A., Hardalupas, Y., & Taylor, A. M. K. P. (2024). A computational study of the use of hydrogen peroxide as pilot fuel for a homogeneous mixture of ammonia/hydrogen in a compression ignition engine. Journal of Ammonia Energy, 2(1), 42-63. https://doi.org/10.18573/jae.28

We report a computational investigation of a compression ignition (CI) engine (compression ratio: 17.6, displacement volume: 1.3 L) where the main fuel is a homogeneous mixture of ammonia (70-60% vol%) and hydrogen (30-40% vol%), with a global equiva... Read More about A computational study of the use of hydrogen peroxide as pilot fuel for a homogeneous mixture of ammonia/hydrogen in a compression ignition engine.

The mechanism of propagation of NH3/air and NH3/H2/air laminar premixed flame fronts (2024)
Journal Article
Tingas, E.-A., Gkantonas, S., Mastorakos, E., & Goussis, D. (2024). The mechanism of propagation of NH3/air and NH3/H2/air laminar premixed flame fronts. International Journal of Hydrogen Energy, 78, 1004-1015. https://doi.org/10.1016/j.ijhydene.2024.06.289

The mechanism of flame front propagation in NH3/air and NH3/H2/air steady, laminar premixed flames is examined. Since the process is characterised by a state of chemical non-equilibrium, the analysis focuses on the explosive mode that is introduced b... Read More about The mechanism of propagation of NH3/air and NH3/H2/air laminar premixed flame fronts.