Dr Stathis Tingas' Outputs (85)

Dynamical Analysis of Methanol-Dimethyl Ether Autoignition at Engine-Relevant Conditions (2017)
Presentation / Conference Contribution
Song, W., Tingas, E., & Im, H. (2017, December). Dynamical Analysis of Methanol-Dimethyl Ether Autoignition at Engine-Relevant Conditions. Paper presented at 11th Asia-Pacific Conference on Combustion, Sydney, Australia

Song, W., Tingas, E., & Im, H. (2017, December). Dynamical Analysis of Methanol-Dimethyl Ether Autoignition at Engine-Relevant Conditions. Paper presented at 11th Asia-Pacific Conference on Combustion, Sydney, Australia.

Investigation of Turbulent Hydrogen Premixed Flame Topologies at Different Combustion Regimes Using Computational Singular Perturbation (2017)
Presentation / Conference Contribution
Tingas, S., Hernandez Perez, F., & Im, H. (2017, November). Investigation of Turbulent Hydrogen Premixed Flame Topologies at Different Combustion Regimes Using Computational Singular Perturbation. Paper presented at 70th Annual Meeting of the APS Division of Fluid Dynamics, Denver, Colorado

The investigation of turbulent flames at higher Reynolds and Karlovitz numbers has been gaining research interest, due to the advances in the computational power that has facilitated the use of direct numerical simulations (DNS). One of the additiona... Read More about Investigation of Turbulent Hydrogen Premixed Flame Topologies at Different Combustion Regimes Using Computational Singular Perturbation.

The use of CO2 as an additive for ignition delay and pollutant control in CH4/air autoignition (2017)
Journal Article
Tingas, E. A., Im, H. G., Kyritsis, D. C., & Goussis, D. A. (2018). The use of CO2 as an additive for ignition delay and pollutant control in CH4/air autoignition. Fuel, 211, 898-905. https://doi.org/10.1016/j.fuel.2017.09.022

The effect of CO2 dilution on the adiabatic and isochoric autoignition of CH4/air mixtures is analyzed with Computational Singular Perturbation (CSP) algorithmic tools, with a particular emphasis on the determination of the features of the chemical d... Read More about The use of CO2 as an additive for ignition delay and pollutant control in CH4/air autoignition.

Dynamical System Analysis of a Turbulent Premixed Planar Hydrogen Flame in the Corrugated Flamelets Combustion Regime (2017)
Presentation / Conference Contribution
Tingas, E., Malpica Galassi, R., Paolo Ciottoli, P., Mukhadiyev, N., Im, H., & Valorani, M. (2017, September). Dynamical System Analysis of a Turbulent Premixed Planar Hydrogen Flame in the Corrugated Flamelets Combustion Regime. Paper presented at 10th Mediterranean Combustion Symposium, Naples, Italy

Tingas, E., Malpica Galassi, R., Paolo Ciottoli, P., Mukhadiyev, N., Im, H., & Valorani, M. (2017, September). Dynamical System Analysis of a Turbulent Premixed Planar Hydrogen Flame in the Corrugated Flamelets Combustion Regime. Paper presented at 1... Read More about Dynamical System Analysis of a Turbulent Premixed Planar Hydrogen Flame in the Corrugated Flamelets Combustion Regime.

A Computational Analysis of Autoignition of H2/Air Mixture with Temperature Fluctuations Using Computational Singular Perturbation (2017)
Presentation / Conference Contribution
Song, W., Tingas, E., Lee, S., & Im, H. G. (2017, July). A Computational Analysis of Autoignition of H2/Air Mixture with Temperature Fluctuations Using Computational Singular Perturbation. Paper presented at 26th International Colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS), Boston, USA

Song, W., Tingas, E., Lee, S., & Im, H. G. (2017, July). A Computational Analysis of Autoignition of H2/Air Mixture with Temperature Fluctuations Using Computational Singular Perturbation. Paper presented at 26th International Colloquium on the Dynam... Read More about A Computational Analysis of Autoignition of H2/Air Mixture with Temperature Fluctuations Using Computational Singular Perturbation.

Dynamics of n-Hexane/Air Low Temperature Autoignition (2017)
Presentation / Conference Contribution
Tingas, E., Wang, Z., Mani Sarathy, S., Im, H. G., & Goussis, D. A. (2017, July). Dynamics of n-Hexane/Air Low Temperature Autoignition. Paper presented at 6th International Workshop on Model Reduction in Reactive Flow (IWMRRF), Princeton, US

Tingas, E., Wang, Z., Mani Sarathy, S., Im, H. G., & Goussis, D. A. (2017, July). Dynamics of n-Hexane/Air Low Temperature Autoignition. Paper presented at 6th International Workshop on Model Reduction in Reactive Flow (IWMRRF), Princeton, US.

Ignition delay control through additives in DME/air and EtOH/air mixtures (2017)
Presentation / Conference Contribution
Tingas, S., Kyritsis, D. C., & Goussis, D. A. (2017, July). Ignition delay control through additives in DME/air and EtOH/air mixtures. Paper presented at 6th International Workshop on Model Reduction in Reactive Flow (IWMRRF), Princeton, US

Tingas, S., Kyritsis, D. C., & Goussis, D. A. (2017, July). Ignition delay control through additives in DME/air and EtOH/air mixtures. Paper presented at 6th International Workshop on Model Reduction in Reactive Flow (IWMRRF), Princeton, US.

Dynamical System Analysis of a Turbulent Premixed Planar Hydrogen Flame in the Corrugated Flamelets Combustion Regime (2017)
Presentation / Conference Contribution
Tingas, S., Galassi, R., Ciottoli, P., Mukhadiyev, N., Im, H., & Valorani, M. (2017, June). Dynamical System Analysis of a Turbulent Premixed Planar Hydrogen Flame in the Corrugated Flamelets Combustion Regime. Paper presented at 40th Meeting Italian Section of the Combustion Institute, Rome, Italy

Tingas, S., Galassi, R., Ciottoli, P., Mukhadiyev, N., Im, H., & Valorani, M. (2017, June). Dynamical System Analysis of a Turbulent Premixed Planar Hydrogen Flame in the Corrugated Flamelets Combustion Regime. Paper presented at 40th Meeting Italian... Read More about Dynamical System Analysis of a Turbulent Premixed Planar Hydrogen Flame in the Corrugated Flamelets Combustion Regime.

Flame Front Insights at Extreme Combustion Conditions (2017)
Presentation / Conference Contribution
Tingas, S., Mukhadiyev, N., & Im, H. (2017, May). Flame Front Insights at Extreme Combustion Conditions. Poster presented at Predictive Complex Computational Fluid Dynamics Conference, KAUST, Saudi Arabia

Tingas, S., Mukhadiyev, N., & Im, H. (2017, May). Flame Front Insights at Extreme Combustion Conditions. Poster presented at Predictive Complex Computational Fluid Dynamics Conference, KAUST, Saudi Arabia.

Flame Front Insights at Extreme Combustion Conditions (2017)
Presentation / Conference Contribution
Tingas, S., Mukhadiyev, N., & Im, H. (2017, May). Flame Front Insights at Extreme Combustion Conditions. Poster presented at 7th SASCI Meeting, Saudi Arabian Section of the Combustion Institute, KAUST, Saudi Arabia

The objective of this work is to obtain physical understanding of a high Karlovitz premixed H2/air flame by using algorithmic tools of the computational singular perturbation (CSP) approach [1, 2]. On the top of these tools, a recently developed quan... Read More about Flame Front Insights at Extreme Combustion Conditions.

Investigation of the Unsteady Effects of Temperature Fluctuation on the Ignition of a Hydrogen-Air Mixture (2017)
Presentation / Conference Contribution
Song, W., Tingas, S., Lee, S., & Im, H. G. (2017, May). Investigation of the Unsteady Effects of Temperature Fluctuation on the Ignition of a Hydrogen-Air Mixture. Paper presented at 7th Annual Meeting of the Saudi Arabian Section of Combustion Institute, Saudi Arabia

Song, W., Tingas, S., Lee, S., & Im, H. G. (2017, May). Investigation of the Unsteady Effects of Temperature Fluctuation on the Ignition of a Hydrogen-Air Mixture. Paper presented at 7th Annual Meeting of the Saudi Arabian Section of Combustion Insti... Read More about Investigation of the Unsteady Effects of Temperature Fluctuation on the Ignition of a Hydrogen-Air Mixture.

Comparative investigation of homogeneous autoignition of DME/air and EtOH/air mixtures at low initial temperatures (2016)
Journal Article
Tingas, E.-A., Kyritsis, D. C., & Goussis, D. A. (2017). Comparative investigation of homogeneous autoignition of DME/air and EtOH/air mixtures at low initial temperatures. Combustion Theory and Modelling, 21(1), 93-119. https://doi.org/10.1080/13647830.2016.1238513

The dynamics of homogeneous isochoric explosions of dimethylether (DME)/air and ethanol (EtOH)/air mixtures were studied and compared at relatively low initial temperatures (≤ 700 K) using algorithmic tools derived from the methodology of computation... Read More about Comparative investigation of homogeneous autoignition of DME/air and EtOH/air mixtures at low initial temperatures.

Algorithmic determination of the mechanism through which H2O-dilution affects autoignition dynamics and NO formation in CH4/air mixtures (2016)
Journal Article
Tingas, E. A., Kyritsis, D. C., & Goussis, D. A. (2016). Algorithmic determination of the mechanism through which H2O-dilution affects autoignition dynamics and NO formation in CH4/air mixtures. Fuel, 183, 90-98. https://doi.org/10.1016/j.fuel.2016.06.057

The Computational Singular Perturbation (CSP) algorithm is employed in order to determine how H2O-dilution influences ignition delay and chemical paths that generate NO during isochoric homogenous lean CH4/air autoignition. Regarding the ignition del... Read More about Algorithmic determination of the mechanism through which H2O-dilution affects autoignition dynamics and NO formation in CH4/air mixtures.

Unstable modes in bounded slow manifolds (2016)
Presentation / Conference Contribution
Manias, D., Tingas, S., & Goussis, D. (2016, June). Unstable modes in bounded slow manifolds. Paper presented at XXXVI Dynamics Days Europe, Corfu, Greece

The reactions contributing to the explosive time scale that characterises the autoignition of a homogeneous stoichiometric CH4/ air mixture are identified, using two different chemical kinetics mechanisms; the well known GRI-3 mechanism (5... Read More about Unstable modes in bounded slow manifolds.

Algorithmic Asymptotic Analysis of Autoigniting Systems (2016)
Thesis
Tingas, S. Algorithmic Asymptotic Analysis of Autoigniting Systems. (Thesis). National Technical University Of Athens. http://researchrepository.napier.ac.uk/Output/2676012

Using algorithmic tools derived from the methodology of Computational Singular Perturbation various autoignition problems are investigated. In the first problem, the autoignition kinetics of DME/air and EtOH/air stoichiometric mixtures are compared b... Read More about Algorithmic Asymptotic Analysis of Autoigniting Systems.

The effects of H2O dilution in CH4/air autoignition and NOx generation (2016)
Presentation / Conference Contribution
Tingas, S., Kyritsis, D., & Goussis, D. (2016, March). The effects of H2O dilution in CH4/air autoignition and NOx generation. Poster presented at Future Fuels Workshop, Thuwal, Saudi Arabia

Tingas, S., Kyritsis, D., & Goussis, D. (2016, March). The effects of H2O dilution in CH4/air autoignition and NOx generation. Poster presented at Future Fuels Workshop, KAUST, Thuwal, Saudi Arabia.

Ignition delay control of DME/air and EtOH/air homogeneous autoignition with the use of various additives (2015)
Journal Article
Tingas, E. A., Kyritsis, D. C., & Goussis, D. A. (2016). Ignition delay control of DME/air and EtOH/air homogeneous autoignition with the use of various additives. Fuel, 169, 15-24. https://doi.org/10.1016/j.fuel.2015.11.081

The effect of selected additives on the ignition delay of ethanol (EtOH)/air and dimethylether (DME)/air mixture is investigated. Computational Singular Perturbation (CSP) tools are utilized in an effort to determine algorithmically which species to... Read More about Ignition delay control of DME/air and EtOH/air homogeneous autoignition with the use of various additives.

The mechanism by which CH2O and H2O2 additives affect the autoignition of CH4/air mixtures (2015)
Journal Article
Manias, D. M., Tingas, E. A., Frouzakis, C. E., Boulouchos, K., & Goussis, D. A. (2016). The mechanism by which CH2O and H2O2 additives affect the autoignition of CH4/air mixtures. Combustion and Flame, 164, 111-125. https://doi.org/10.1016/j.combustflame.2015.11.008

When the fast dissipative time scales become exhausted, the evolution of reacting processes is characterized by slower time scales. Here the case where these slower time scales are of explosive character is considered. This feature allows for the acq... Read More about The mechanism by which CH2O and H2O2 additives affect the autoignition of CH4/air mixtures.

Autoignition dynamics of DME/air and EtOH/air homogeneous mixtures (2015)
Journal Article
Tingas, E. A., Kyritsis, D. C., & Goussis, D. A. (2015). Autoignition dynamics of DME/air and EtOH/air homogeneous mixtures. Combustion and Flame, 162(9), 3263-3276. https://doi.org/10.1016/j.combustflame.2015.05.016

The autoignition kinetics of DME/air and EtOH/air stoichiometric mixtures are compared with the use of algorithmic tools from the CSP method at a range of initial conditions that refers to the operation of reciprocating engines. DME and EtOH are two... Read More about Autoignition dynamics of DME/air and EtOH/air homogeneous mixtures.

Autoignition dynamics of DME/air and EtOH/air homogeneous mixtures (2015)
Presentation / Conference Contribution
Tingas, S., Kyritsis, D., & Goussis, D. (2015, June). Autoignition dynamics of DME/air and EtOH/air homogeneous mixtures. Paper presented at 9th Mediterranean Combustion Symposium, Rhodes, Greece

Tingas, S., Kyritsis, D., & Goussis, D. (2015, June). Autoignition dynamics of DME/air and EtOH/air homogeneous mixtures. Paper presented at 9th Mediterranean Combustion Symposium, Rhodes, Greece.