Research
Research interests
My PhD research builds on existing research in the development of ammonia-based combustion systems, especially in the context of gas turbine combustion. Sub-topics of interest include:
- Laminar flame emissions and fundamental flame behavior
- Validation of chemical reaction mechanisms
- Evaluation and improvement of numerical methods towards modeling ammonia/hydrogen blends
- Materials for the manufacture of ammonia-based combustors
Publications
2024
- Kovaleva, M. 2024. Fundamental understanding of ammonia blend flame chemistry using wall-stabilised configurations. PhD Thesis, Cardiff University.
2023
- Alnasif, A., Zitouni, S., Mashruk, S., Brequigny, P., Kovaleva, M., Mounaim-Rousselle, C. and Valera Medina, A. 2023. Experimental and numerical comparison of currently available reaction mechanisms for laminar flame speed in 70/30 (%vol.) NH3/H2 flames. Applications in Energy and Combustion Science 14, article number: 100139. (10.1016/j.jaecs.2023.100139)
- Hayakawa, A. et al. 2023. Experimental and numerical study of product gas and N2O emission characteristics of ammonia/hydrogen/air premixed laminar flames stabilized in a stagnation flow. Proceedings of the Combustion Institute 39(2), pp. 1625-1633. (10.1016/j.proci.2022.08.124)
- Kovaleva, M., Gruber, A., Minamoto, Y. and Hayakawa, A. 2023. Transient near-wall emission characteristics of NH3/H2/N2 flames. Presented at: 2nd Symposium on Ammonia Energy, Orleans, France, 10 - 13 July 2023.
- Kovaleva, M. et al. 2023. The impact of soret diffusion on the product gas characteristics of premixed laminar ammonia/hydrogen/air flames stabilised in a stagnation flow. Presented at: 14th Asia-Pacific Conference on Combustion, Kaohsuing, Taiwan, 14 -18 May 2023Proceedings of the 14th Asia-Pacific Conference on Combustion.
2022
- Mashruk, S., Kovaleva, M., Alnasif, A., Chong, C. T., Hayakawa, A., Okafor, E. C. and Valera Medina, A. 2022. Nitrogen oxide emissions analyses in ammonia/hydrogen/air premixed swirling flames. Energy 260, article number: 125183. (10.1016/j.energy.2022.125183)
- Mashruk, S., Okafor, E., Kovaleva, M., Alnasif, A., Pugh, D., Hayakawa, A. and Valera Medina, A. 2022. Evolution of N2O production at lean combustion condition in NH3/H2/air premixed swirling flames. Combustion and Flame 244, article number: 112299. (10.1016/j.combustflame.2022.112299)
- Kovaleva, M., Dziedzic, D., Mashruk, S., Evans, S., Valera Medina, A. and Galindo-Nava, E. 2022. The evaluation of ammonia/hydrogen combustion on the H permeation and embrittlement of nickel-base superalloys. Presented at: American Society of Mechanical Engineers, Rotterdam, Netherlands, 13 - 17 June 2022Proceedings of ASME Turbo Expo 2022. ASME pp. 82239., (10.1115/GT2022-82239)
- Alnasif, A., Mashruk, S., Kovaleva, M., Wang, P. and Valera-Medina, A. 2022. Experimental and numerical analyses of nitrogen oxides formation in a high ammonia-low hydrogen blend using a tangential swirl burner. Carbon Neutrality 1, article number: 24. (10.1007/s43979-022-00021-9)
- Kovaleva, M., Hayakawa, A., Colson, S., Okafor, E. C., Kudo, T., Valera Medina, A. and Kobayashi, H. 2022. Numerical and experimental study of product gas characteristics in premixed ammonia/methane/air laminar flames stabilised in a stagnation flow. Fuel Communications 10, article number: 100054. (10.1016/j.jfueco.2022.100054)
- Kovaleva, M., Rieth, M. and Chen, J. 2022. Interpolation error of FGM tabulation in an unnormalised progress variable subspace. Presented at: 39th International Combustion Symposium, Vancouver, 24-29 July 2022.
- Alnasif, A., Zitouni, S., Mashruk, S., Brequigny, P., Kovaleva, M., Mounaim-Rousselle, C. and Valera-Medina, A. 2022. Experimental and numerical comparison of currently available reaction mechanisms for laminar flame speed in hydrogen/ammonia flames. Presented at: SET2022: International Conference on Sustainable Energy and Technologies, 16-18 August 202219th International Conference on Sustainable Energy Technologies – SET 2022.
2021
- Hayakawa, A. et al. 2021. Study on N2O production mechanisms of lean ammonia/hydrogen/air premixed laminar flames. Presented at: The 59th Japanese Symposium on Combustion, Virtual, 22nd - 24 November 2021.
- Vigueras-Zuniga, M. O., Tejeda-del-Cueto, M. E., Mashruk, S., Kovaleva, M., Ordonez-Romero, C. L. and Valera Medina, A. 2021. Methane/ammonia radical formation during high temperature reactions in swirl burners. Energies 14(20), article number: 6624. (10.3390/en14206624)
- Boero, A. J. et al. 2021. Environmental life cycle assessment of ammonia‐based electricity. Energies 14(20), article number: 6721. (10.3390/en14206721)
- Hayakawa, A. et al. 2021. N2O production characteristics of strain stabilized premixed laminar ammonia/hydrogen/air premixed flames in lean conditions. Presented at: 13th Asia-Pacific Conference on Combustion 2021, Abu Dhabi, United Arab Emirates, 05-09 December 2021.
- Hayakawa, A. et al. 2021. Product gas characteristics of ammonia/hydrogen/air premixed laminar flames stabilized in stagnation flows for various equivalence ratios. Presented at: 18th International Conference on Flow Dynamics (ICFD 2021), Virtual, 27-29 October 2021.
- Kovaleva, M., Mashruk, S., Agwu, O. and Valera Medina, A. 2021. The development and testing of a CH4/NH3/H2 combustion system for a 50kW micro gas turbine. Presented at: ASME Turbomachinery Technical Conference & Exposition (Turbo Expo 2021), Virtual, 7-11 June 2021.
- Kovaleva, M., Mashruk, S. and Valera Medina, A. 2021. Experimental study of ammonia addition in premixed methane flames. Presented at: 38th International Symposium on Combustion, Adelaide, Australia, 24-29 January 2021.
- Mashruk, S., Kovaleva, M., Zitouni, S. E., Brequigny, P., Rousselle, C. and Valera-Medina, A. 2021. Ammonia/hydrogen/methane characteristic profiles for atmospheric combustion applications. Presented at: 13th International Conference on Applied Energy (ICAE 2021), Bangkok, Thailand, 29 November - 02 December 2021.
- Mashruk, S., Kovaleva, M., Tung Chong, C., Hayakawa, A., Okafor, E. C. and Valera-Medina, A. 2021. Nitrogen Oxides as a by-product of Ammonia/Hydrogen combustion regimes. Chemical Engineering Transactions 89, pp. 613-618. (10.3303/CET2189103)
- Kovaleva, M., Mashruk, S. and Valera Medina, A. 2021. Empirical and numerical investigation of turbulent flows in a novel design burner for ammonia/hydrogen combustion. Presented at: European Combustion Meeting (ECM 2021), Virtual, 14-15 April 2021.
- Kovaleva, M., Hayakawa, A., Taku, K. and Hideaki, K. 2021. Product gas analysis of laminar premixed ammonia-methane flames in stagnation flows. Presented at: 38th International Symposium on Combustion, Adelaide, Australia, 24-29 January 2021.