Skip to main content

Research Repository

Advanced Search

All Outputs (33)

Engine performance and emissions from a fumigated hydrogen/ammonia compression ignition engine with a hydrogen peroxide pilot (2024)
Journal Article
Paterson, G., Tingas, E., Hardalupas, Y., & Taylor, A. M. (2024). Engine performance and emissions from a fumigated hydrogen/ammonia compression ignition engine with a hydrogen peroxide pilot. International Journal of Hydrogen Energy, 67, 334-350. https://doi.org/10.1016/j.ijhydene.2024.04.151

The study investigates, numerically, the potential use of introducing aqueous HO as an ignition promoter in a statistically homogeneous NH/H fuelled, medium speed (1250 rpm), 4-stroke, 1.3 litre cylinder displacement, mildly boosted CI engine with a... Read More about Engine performance and emissions from a fumigated hydrogen/ammonia compression ignition engine with a hydrogen peroxide pilot.

Asymptotic analysis of detonation development at SI engine conditions using computational singular perturbation (2023)
Journal Article
Dimitrova, I. D., Luong, M., Sanal, S., Tingas, E., & Im, H. G. (in press). Asymptotic analysis of detonation development at SI engine conditions using computational singular perturbation. Combustion Theory and Modelling, https://doi.org/10.1080/13647830.2023.2281379

The occurrence and intensity of the detonation phenomenon at spark-ignition (SI) engine conditions is investigated, with the objective to successfully predict super-knock and to elucidate the effect of kinetics and transport at the ignition front. Th... Read More about Asymptotic analysis of detonation development at SI engine conditions using computational singular perturbation.

Editorial: A glimpse of EVC2023 (2023)
Journal Article
Muhammad-Sukki, F., Bani, N. A., & Tingas, E. (2023). Editorial: A glimpse of EVC2023. Transportation Research Procedia, 70, 1-4. https://doi.org/10.1016/j.trpro.2023.10.001

The Editorial describes the main aim and results of the 8th International Electric Vehicle Conference (EVC2023) held in Edinburgh Napier University, Edinburgh, United Kingdom from 21 – 23 June 2023.

Modelling the Transmission of Coxiella burnetii within a UK Dairy Herd: Investigating the Interconnected Relationship between the Parturition Cycle and Environment Contamination (2022)
Journal Article
Patsatzis, D. G., Wheelhouse, N., & Tingas, E. (2022). Modelling the Transmission of Coxiella burnetii within a UK Dairy Herd: Investigating the Interconnected Relationship between the Parturition Cycle and Environment Contamination. Veterinary Sciences, 9(10), Article 522. https://doi.org/10.3390/vetsci9100522

Q fever infection in dairy herds is introduced through the transmission of the bacterium Coxiella burnetii, resulting in multiple detrimental effects such as reduction of lactation, abortions and chronic infection. Particularly in the UK, recent evid... Read More about Modelling the Transmission of Coxiella burnetii within a UK Dairy Herd: Investigating the Interconnected Relationship between the Parturition Cycle and Environment Contamination.

Computational investigation of ammonia-hydrogen peroxide blends in HCCI engine mode (2022)
Journal Article
Shafiq, O., & Tingas, E. (2023). Computational investigation of ammonia-hydrogen peroxide blends in HCCI engine mode. International Journal of Engine Research, 24(5), 2279-2294. https://doi.org/10.1177/14680874221117686

The potential use of hydrogen peroxide as an ignition promoter to enable the use of ammonia in compression ignition engines is explored in the current study. A simplified numerical HCCI engine model within the Chemkin Pro suite is employed. The numer... Read More about Computational investigation of ammonia-hydrogen peroxide blends in HCCI engine mode.

Numerical analysis of zero-carbon HCCI engine fuelled with steam diluted H2/H2O2 blends (2022)
Journal Article
Fernie, O., Megaritis, T., Ganippa, L. C., & Tingas, E. (2022). Numerical analysis of zero-carbon HCCI engine fuelled with steam diluted H2/H2O2 blends. Fuel, 326, Article 125100. https://doi.org/10.1016/j.fuel.2022.125100

The addition of hydrogen peroxide and steam to a hydrogen-fuelled HCCI engine was investigated at various fuel lean conditions ( = 0.2–0.6) and compression ratios (15–20) using a 0-dimensional numerical model. The use of hydrogen peroxide as an ignit... Read More about Numerical analysis of zero-carbon HCCI engine fuelled with steam diluted H2/H2O2 blends.

Computational analysis of an HCCI engine fuelled with hydrogen/hydrogen peroxide blends (2022)
Journal Article
Dimitrova, I. D., Megaritis, T., Ganippa, L. C., & Tingas, E. (2022). Computational analysis of an HCCI engine fuelled with hydrogen/hydrogen peroxide blends. International Journal of Hydrogen Energy, 47(17), 10083-10096. https://doi.org/10.1016/j.ijhydene.2022.01.093

In the current work, Chemkin Pro's HCCI numerical model is used in order to explore the feasibility of using hydrogen in a dual fuel concept where hydrogen peroxide acts as ignition promoter. The analysis focuses on the engine performance characteris... Read More about Computational analysis of an HCCI engine fuelled with hydrogen/hydrogen peroxide blends.

Statistics of local and global flame speed and structure for highly turbulent H2/air premixed flames (2021)
Journal Article
Song, W., Hernández Pérez, F. E., Tingas, E., & Im, H. G. (2021). Statistics of local and global flame speed and structure for highly turbulent H2/air premixed flames. Combustion and Flame, 232, Article 111523. https://doi.org/10.1016/j.combustflame.2021.111523

A statistical analysis is conducted for turbulent hydrogen-air premixed flames at a range of Karlovitz numbers up to 1,126 by direct numerical simulations (DNS) with detailed chemistry. The local and global burning velocities are evaluated and the de... Read More about Statistics of local and global flame speed and structure for highly turbulent H2/air premixed flames.

Potential for Carbon-Neutral Advanced Biofuels in UK Road Transport (2021)
Journal Article
King, R., & Tingas, E. (2021). Potential for Carbon-Neutral Advanced Biofuels in UK Road Transport. Journal of Energy Engineering, 147(4), 04021025. https://doi.org/10.1061/%28asce%29ey.1943-7897.0000775

As a result of anthropocentric climate change, there is an urgent need to decarbonize the supply of energy. Organic biomass, referred to as feedstock, can be converted into biofuels that have the potential to decarbonize transport. However, biofuels... Read More about Potential for Carbon-Neutral Advanced Biofuels in UK Road Transport.

Computational analysis of the effect of hydrogen peroxide addition on premixed laminar hydrogen/air flames (2021)
Journal Article
Tingas, E. (2021). Computational analysis of the effect of hydrogen peroxide addition on premixed laminar hydrogen/air flames. Fuel, 302, Article 121081. https://doi.org/10.1016/j.fuel.2021.121081

In the current work, the effect of H2O2 addition on the flame structure, laminar flame speed and NOx emissions is investigated in the context of 1D laminar premixed H2/air flames at Tu = 300 and 600 K, p = 1 and 30 atm, = 0.5. Mathematical tools fro... Read More about Computational analysis of the effect of hydrogen peroxide addition on premixed laminar hydrogen/air flames.

The chemical dynamics of hydrogen/hydrogen peroxide blends diluted with steam at compression ignition relevant conditions (2021)
Journal Article
Tingas, E. (2021). The chemical dynamics of hydrogen/hydrogen peroxide blends diluted with steam at compression ignition relevant conditions. Fuel, 296, Article 120594. https://doi.org/10.1016/j.fuel.2021.120594

In the current work, the use of hydrogen peroxide as an additive to hydrogen/air mixtures is proposed and explored computationally, in conditions relevant to compression ignition engines. The hydrogen/hydrogen peroxide blends are supplemented with st... Read More about The chemical dynamics of hydrogen/hydrogen peroxide blends diluted with steam at compression ignition relevant conditions.

Dynamics Analysis of a Jet-Fuel Surrogate and Development of a Skeletal Mechanism for Computational Fluid Dynamic Applications (2020)
Journal Article
Sharmin, N., & Tingas, E. (2020). Dynamics Analysis of a Jet-Fuel Surrogate and Development of a Skeletal Mechanism for Computational Fluid Dynamic Applications. Journal of Energy Engineering, 146(6), Article 04020064. https://doi.org/10.1061/%28asce%29ey.1943-7897.0000714

The autoignition dynamics of a three-component surrogate jet fuel (66.2% n-dodecane, 15.8% n-proplylbenzene, 18.0% 1,3,5-trimethylcyclohexane) suitable for usage as Jet A-1 and RP-3 aviation fuels are analyzed, using the detailed mechanism of Liu et... Read More about Dynamics Analysis of a Jet-Fuel Surrogate and Development of a Skeletal Mechanism for Computational Fluid Dynamic Applications.

Screening gas‐phase chemical kinetic models: Collision limit compliance and ultrafast timescales (2020)
Journal Article
Yalamanchi, K. K., Tingas, E., Im, H. G., & Sarathy, S. M. (2020). Screening gas‐phase chemical kinetic models: Collision limit compliance and ultrafast timescales. International Journal of Chemical Kinetics, 52(9), 599-610. https://doi.org/10.1002/kin.21373

Detailed gas‐phase chemical kinetic models are widely used in combustion research, and many new mechanisms for different fuels and reacting conditions are developed each year. Recent works have highlighted the need for error checking when preparing s... Read More about Screening gas‐phase chemical kinetic models: Collision limit compliance and ultrafast timescales.

Computational singular perturbation analysis of brain lactate metabolism (2019)
Journal Article
Patsatzis, D. G., Tingas, E., Goussis, D. A., & Sarathy, S. M. (2019). Computational singular perturbation analysis of brain lactate metabolism. PLOS ONE, 14(12), Article e0226094. https://doi.org/10.1371/journal.pone.0226094

Lactate in the brain is considered an important fuel and signalling molecule for neuronal activity, especially during neuronal activation. Whether lactate is shuttled from astrocytes to neurons or from neurons to astrocytes leads to the contradictory... Read More about Computational singular perturbation analysis of brain lactate metabolism.

Algorithmic Analysis of Chemical Dynamics of the Autoignition of NH3–H2O2/Air Mixtures (2019)
Journal Article
Khalil, A. T., Manias, D. M., Tingas, E., Kyritsis, D. C., & Goussis, D. A. (2019). Algorithmic Analysis of Chemical Dynamics of the Autoignition of NH3–H2O2/Air Mixtures. Energies, 12(23), Article 4422. https://doi.org/10.3390/en12234422

The dynamics of a homogeneous adiabatic autoignition of an ammonia/air mixture at constant volume was studied, using the algorithmic tools of Computational Singular Perturbation. Since ammonia combustion is characterized by both unrealistically long... Read More about Algorithmic Analysis of Chemical Dynamics of the Autoignition of NH3–H2O2/Air Mixtures.

Chemical Ignition Characteristics of Ethanol Blending with Primary Reference Fuels (2019)
Journal Article
Singh, E., Tingas, E., Goussis, D., Im, H. G., & Sarathy, S. M. (2019). Chemical Ignition Characteristics of Ethanol Blending with Primary Reference Fuels. Energy and Fuels, 33(10), 10185-10196. https://doi.org/10.1021/acs.energyfuels.9b01423

Synergistic octane blending behavior of ethanol with gasoline and its surrogates has been observed by many researchers. The nonlinear octane boosting tendency is observed at mid and high molar blends of ethanol in primary reference fuels. The present... Read More about Chemical Ignition Characteristics of Ethanol Blending with Primary Reference Fuels.

Topological and chemical characteristics of turbulent flames at MILD conditions (2019)
Journal Article
Manias, D. M., Tingas, E., Minamoto, Y., & Im, H. G. (2019). Topological and chemical characteristics of turbulent flames at MILD conditions. Combustion and Flame, 208, 86-98. https://doi.org/10.1016/j.combustflame.2019.06.031

Dominant physical processes that characterize the combustion of a lean methane/air mixture, diluted with exhaust gas recirculation (EGR), under turbulent MILD premixed conditions are identified using the combined approach of Computational Singular Pe... Read More about Topological and chemical characteristics of turbulent flames at MILD conditions.

Development of a reduced four-component (toluene/n-heptane/iso-octane/ethanol) gasoline surrogate model (2019)
Journal Article
Li, Y., Alfazazi, A., Mohan, B., Alexandros Tingas, E., Badra, J., Im, H. G., & Mani Sarathy, S. (2019). Development of a reduced four-component (toluene/n-heptane/iso-octane/ethanol) gasoline surrogate model. Fuel, 247, 164-178. https://doi.org/10.1016/j.fuel.2019.03.052

The prospect of blending gasoline fuel with ethanol is being investigated as a potential way to improve the knock residence of the base gasoline. However, one of the drawbacks is a lack of proper understanding of the reason for the non-linear respons... Read More about Development of a reduced four-component (toluene/n-heptane/iso-octane/ethanol) gasoline surrogate model.

H2/Air Autoignition Dynamics around the Third Explosion Limit (2018)
Journal Article
Tingas, E., Kyritsis, D. C., & Goussis, D. A. (2019). H2/Air Autoignition Dynamics around the Third Explosion Limit. Journal of Energy Engineering, 145(1), Article 04018074. https://doi.org/10.1061/%28asce%29ey.1943-7897.0000588

This paper examines the influence of wall reactions on the generation of the explosive time scale that characterizes ignition delay around the third explosion limit of a stoichiometric H2/air homogeneous mixture. The only wall reactions exhibiting a... Read More about H2/Air Autoignition Dynamics around the Third Explosion Limit.