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Dr Stathis Tingas' Outputs (43)

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.

Computational investigation of the chemical dynamics in detonation development at SI engine conditions (2021)
Presentation / Conference Contribution
Dimitrova, I. D., Sanal, S., Bau Luong, M., Tingas, S., & Im, H. G. (2021, November). Computational investigation of the chemical dynamics in detonation development at SI engine conditions. Paper presented at 74th Annual Meeting of the APS Division of Fluid Dynamics, Phoenix, Arizona

This study employs algorithmic tools from the computational singular perturbation (CSP) approach and statistics to investigate detonation development in SI engines using 2D simulations at different intensity levels – strong and mild detonations. The... Read More about Computational investigation of the chemical dynamics in detonation development at SI engine conditions.

Identification of Key Processes and Periods in a Model of Human Brain Energy Metabolism by Algorithmic Decomposition with Computational Singular Perturbation (2021)
Presentation / Conference Contribution
Patsatzis, D., Tingas, S., Sarathy, M., Goussis, D., & Jolivet, R. (2021, July). Identification of Key Processes and Periods in a Model of Human Brain Energy Metabolism by Algorithmic Decomposition with Computational Singular Perturbation. Paper presented at XV European Meeting on Glial Cells in Health and Disease, Online

Energetic considerations play a crucial role in brain function and disease. The study of brainenergy metabolism is, however, rendered difficult by a relative lack of experimental tools thatcan probe the contributions of different intri... Read More about Identification of Key Processes and Periods in a Model of Human Brain Energy Metabolism by Algorithmic Decomposition with Computational Singular Perturbation.

Computational investigation of rod-stabilized laminar premixed hydrogen–methane–air flames (2020)
Presentation / Conference Contribution
Hernandez Perez, F. E., Im, H. G., & Tingas, A. E. (2020, January). Computational investigation of rod-stabilized laminar premixed hydrogen–methane–air flames. Presented at AIAA Scitech 2020 Forum, Orlando, FL

A computational study of steady, rod-stabilized, inverted, lean, CH4-air and H2-CH4-air flames is conducted. For the CH4-air flames, either decreasing the inlet equivalence ratio or increasing the mean inflow velocity leads to a larger standoff dista... Read More about Computational investigation of rod-stabilized laminar premixed hydrogen–methane–air flames.

DNS of Lean Hydrogen Turbulent Premixed Flames at High Karlovitz Number Conditions (2020)
Presentation / Conference Contribution
Song, W., Hernandez Perez, F., Tingas, A.-E., & Im, H. G. (2020, January). DNS of Lean Hydrogen Turbulent Premixed Flames at High Karlovitz Number Conditions. Presented at AIAA Scitech 2020 Forum, Orlando, FL

To investigate the turbulent flame speed at high Karlovitz number (Ka) conditions, high fidelity direct numerical simulations (DNS) of lean hydrogen/air premixed flames propagating in a channel are performed with forced turbulence. The turbulent flame sp... Read More about DNS of Lean Hydrogen Turbulent Premixed Flames at High Karlovitz Number Conditions.

Direct Numerical Simulation of Turbulent Hydrogen-Air Premixed Flames at Preheated and Diluted Donditions (2019)
Presentation / Conference Contribution
Song, W., Hernandez Perez, F. E., Tingas, S., & Im, H. (2019, November). Direct Numerical Simulation of Turbulent Hydrogen-Air Premixed Flames at Preheated and Diluted Donditions. Paper presented at 72nd Annual Meeting of the APS Division of Fluid Dynamics, Seattle, Washington, USA

Moderate or intense low-oxygen dilution (MILD) combustion is a promising concept to achieve high-performance and low-emission combustion simultaneously. In this study, we investigate the front propagation and burning characteristics in the MILD mode... Read More about Direct Numerical Simulation of Turbulent Hydrogen-Air Premixed Flames at Preheated and Diluted Donditions.

Heat Capacity Effect on Ethanol Preignition in a Shock Tube (2019)
Presentation / Conference Contribution
Bau Luong, M., Figueroa-Labastida, M., Tingas, S., Sow, A., Hernández Pérez, F. E., Badra, J., Farooq, A., & Im, H. G. (2019, July). Heat Capacity Effect on Ethanol Preignition in a Shock Tube. Paper presented at 27th International Colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS), Beijing, China

Screening Chemical Kinetic Models: Collision Limit Violations and Ultra-Fast Time Scales (2019)
Presentation / Conference Contribution
Yalamanchi, K. K., Tingas, S., Im, H. G., & Sarathy, S. M. (2019, July). Screening Chemical Kinetic Models: Collision Limit Violations and Ultra-Fast Time Scales. Paper presented at 12th Asia-Pacific Conference on Combustion (ASPACC), Fukuoka, Japan

Detailed chemical kinetic models are widely used in combustion research and many new mechanisms for different fuels and reacting conditions are developed and published each year. Recent works have highlighted the need for error checking when preparin... Read More about Screening Chemical Kinetic Models: Collision Limit Violations and Ultra-Fast Time Scales.

Chemical Dynamics of the Ignition of NH3-H2O2 mixtures (2019)
Presentation / Conference Contribution
Khalil, A. T., Tingas, S., Kyritsis, D. C., & Goussis, D. A. (2019, June). Chemical Dynamics of the Ignition of NH3-H2O2 mixtures. Paper presented at 3rd International Conference of Chemical Engineering, Santander, Spain

Khalil, A. T., Tingas, S., Kyritsis, D. C., & Goussis, D. A. (2019, June). Chemical Dynamics of the Ignition of NH3-H2O2 mixtures. Paper presented at 3rd International Conference of Chemical Engineering, Santander, Spain.

Unravelling the chemical and transport characteristics of turbulent MILD combustion (2019)
Presentation / Conference Contribution
Manias, D. M., Tingas, S., Minamoto, Y., & Im, H. G. (2019, June). Unravelling the chemical and transport characteristics of turbulent MILD combustion. Paper presented at 7th International Workshop on Model Reduction in Reactive Flow (IWMRRF), Trondheim, Norway

Manias, D. M., Tingas, S., Minamoto, Y., & Im, H. G. (2019, June). Unravelling the chemical and transport characteristics of turbulent MILD combustion. Paper presented at 7th International Workshop on Model Reduction in Reactive Flow (IWMRRF), Trondh... Read More about Unravelling the chemical and transport characteristics of turbulent MILD combustion.

CSP analysis of Local Sensitivity data (2019)
Presentation / Conference Contribution
Tingas, S., & Goussis, D. (2019, June). CSP analysis of Local Sensitivity data. Paper presented at 7th International Workshop on Model Reduction in Reactive Flow (IWMRRF), Trondheim, Norway

Tingas, S., & Goussis, D. (2019, June). CSP analysis of Local Sensitivity data. Paper presented at 7th International Workshop on Model Reduction in Reactive Flow (IWMRRF), Trondheim, Norway.

A Generalized Partially Stirred Reactor Combustion Closure Using Computational Singular Perturbation Analysis (2019)
Presentation / Conference Contribution
Quadarella, E., Stagni, A., Tingas, S., Cuoci, A., Parente, A., Faravelli, T., & Im, H. (2019, June). A Generalized Partially Stirred Reactor Combustion Closure Using Computational Singular Perturbation Analysis. Paper presented at 11th Mediterranean Combustion Symposium, Tenerife, Spain

Quadarella, E., Stagni, A., Tingas, S., Cuoci, A., Parente, A., Faravelli, T., & Im, H. (2019, June). A Generalized Partially Stirred Reactor Combustion Closure Using Computational Singular Perturbation Analysis. Paper presented at 11th Mediterranean... Read More about A Generalized Partially Stirred Reactor Combustion Closure Using Computational Singular Perturbation Analysis.

A Unified Description of Flame Topologies at Different Turbulent Combustion Regimes Using Computational Singular Perturbation (2019)
Presentation / Conference Contribution
Tingas, S., & Im, H. (2019, May). A Unified Description of Flame Topologies at Different Turbulent Combustion Regimes Using Computational Singular Perturbation. Paper presented at 17th International Conference on Numerical Combustion, Aachen, Germany

Identifying turbulent flame topologies for unambiguous deter-mination of key flame quantities is a challenging task for high Karlovitz number conditions in which different scalar variable sexhibit drastically distinct characteristics. The present st... Read More about A Unified Description of Flame Topologies at Different Turbulent Combustion Regimes Using Computational Singular Perturbation.

Turbulent Burning Characteristics of Hydrogen/Air Premixed Flames in Different Combustion Regimes (2019)
Presentation / Conference Contribution
Song, W., Tingas, S., Hernández Pérez, F. E., & Im, H. G. (2019, April). Turbulent Burning Characteristics of Hydrogen/Air Premixed Flames in Different Combustion Regimes. Paper presented at 9th European Combustion Meeting, Lisbon, Portugal

Song, W., Tingas, S., Hernández Pérez, F. E., & Im, H. G. (2019, April). Turbulent Burning Characteristics of Hydrogen/Air Premixed Flames in Different Combustion Regimes. Paper presented at 9th European Combustion Meeting, Lisbon, Portugal.

CSP and Local Sensitivity Analysis (2019)
Presentation / Conference Contribution
Tingas, S., & Goussis, D. (2019, March). CSP and Local Sensitivity Analysis. Paper presented at 11th US National Combustion Meeting, Pasadena, CA, USA

Tingas, S., & Goussis, D. (2019, March). CSP and Local Sensitivity Analysis. Paper presented at 11th US National Combustion Meeting, Pasadena, CA, USA.