| Science and technology of ammonia combustion H Kobayashi, A Hayakawa, KDKA Somarathne, EC Okafor Proceedings of the combustion institute 37 (1), 109-133, 2019 | 1605 | 2019 |
| Experimental and numerical study of the laminar burning velocity of CH4–NH3–air premixed flames EC Okafor, Y Naito, S Colson, A Ichikawa, T Kudo, A Hayakawa, ... Combustion and flame 187, 185-198, 2018 | 660 | 2018 |
| Measurement and modelling of the laminar burning velocity of methane-ammonia-air flames at high pressures using a reduced reaction mechanism EC Okafor, Y Naito, S Colson, A Ichikawa, T Kudo, A Hayakawa, ... Combustion and Flame 204, 162-175, 2019 | 379 | 2019 |
| Towards the development of an efficient low-NOx ammonia combustor for a micro gas turbine EC Okafor, KDKA Somarathne, A Hayakawa, T Kudo, O Kurata, N Iki, ... Proceedings of the combustion institute 37 (4), 4597-4606, 2019 | 308 | 2019 |
| Control of NOx and other emissions in micro gas turbine combustors fuelled with mixtures of methane and ammonia EC Okafor, KDKA Somarathne, R Ratthanan, A Hayakawa, T Kudo, ... Combustion and flame 211, 406-416, 2020 | 294 | 2020 |
| Development of a wide range-operable, rich-lean low-NOx combustor for NH3 fuel gas-turbine power generation O Kurata, N Iki, T Inoue, T Matsunuma, T Tsujimura, H Furutani, ... Proceedings of the combustion Institute 37 (4), 4587-4595, 2019 | 201 | 2019 |
| Effects of hydrogen concentration on premixed laminar flames of hydrogen–methane–air EC Okafor, A Hayakawa, Y Nagano, T Kitagawa international journal of hydrogen energy 39 (5), 2409-2417, 2014 | 145 | 2014 |
| Emission characteristics of turbulent non-premixed ammonia/air and methane/air swirl flames through a rich-lean combustor under various wall thermal boundary conditions at high … KDKA Somarathne, EC Okafor, A Hayakawa, T Kudo, O Kurata, N Iki, ... Combustion and flame 210, 247-261, 2019 | 142 | 2019 |
| Measurement of the laminar burning velocity and kinetics study of the importance of the hydrogen recovery mechanism of ammonia/hydrogen/air premixed flames GJ Gotama, A Hayakawa, EC Okafor, R Kanoshima, M Hayashi, T Kudo, ... Combustion and Flame 236, 111753, 2022 | 125 | 2022 |
| Flame stability and emissions characteristics of liquid ammonia spray co-fired with methane in a single stage swirl combustor EC Okafor, H Yamashita, A Hayakawa, KDKA Somarathne, T Kudo, ... Fuel 287, 119433, 2021 | 124 | 2021 |
| Influence of wall heat loss on the emission characteristics of premixed ammonia-air swirling flames interacting with the combustor wall EC Okafor, M Tsukamoto, A Hayakawa, KDKA Somarathne, T Kudo, ... Proceedings of the combustion Institute 38 (4), 5139-5146, 2021 | 93 | 2021 |
| Experimental and theoretical analysis of cellular instability in lean H2-CH4-air flames at elevated pressures EC Okafor, Y Nagano, T Kitagawa international journal of hydrogen energy 41 (15), 6581-6592, 2016 | 87 | 2016 |
| Effects of OH concentration and temperature on NO emission characteristics of turbulent non-premixed CH4/NH3/air flames in a two-stage gas turbine like combustor at high pressure KDKA Somarathne, EC Okafor, D Sugawara, A Hayakawa, H Kobayashi Proceedings of the Combustion Institute 38 (4), 5163-5170, 2021 | 81 | 2021 |
| Liquid ammonia spray combustion in two-stage micro gas turbine combustors at 0.25 MPa; Relevance of combustion enhancement to flame stability and NOx control EC Okafor, O Kurata, H Yamashita, T Inoue, T Tsujimura, N Iki, ... Applications in Energy and Combustion Science 7, 100038, 2021 | 79 | 2021 |
| Effects of initial mixture temperature and pressure on laminar burning velocity and Markstein length of ammonia/air premixed laminar flames R Kanoshima, A Hayakawa, T Kudo, EC Okafor, S Colson, A Ichikawa, ... Fuel 310, 122149, 2022 | 77 | 2022 |
| Experimental and numerical study of product gas characteristics of ammonia/air premixed laminar flames stabilized in a stagnation flow A Hayakawa, Y Hirano, EC Okafor, H Yamashita, T Kudo, H Kobayashi Proceedings of the Combustion Institute 38 (2), 2409-2417, 2021 | 64 | 2021 |
| Evolution of N2O production at lean combustion condition in NH3/H2/air premixed swirling flames S Mashruk, EC Okafor, M Kovaleva, A Alnasif, D Pugh, A Hayakawa, ... Combustion and Flame 244, 112299, 2022 | 57 | 2022 |
| Nitrogen oxide emissions analyses in ammonia/hydrogen/air premixed swirling flames S Mashruk, M Kovaleva, A Alnasif, CT Chong, A Hayakawa, EC Okafor, ... Energy 260, 125183, 2022 | 47 | 2022 |
| Experimental and numerical study of product gas and N2O emission characteristics of ammonia/hydrogen/air premixed laminar flames stabilized in a stagnation flow A Hayakawa, M Hayashi, M Kovaleva, GJ Gotama, EC Okafor, S Colson, ... Proceedings of the Combustion Institute 39 (2), 1625-1633, 2023 | 35 | 2023 |
| Nitrogen oxides as a by-product of ammonia/hydrogen combustion regimes S Mashruk, M Kovaleva, C Tung Chong, A Hayakawa, EC Okafor, ... Chemical Engineering Transactions 89, 613-618, 2021 | 31 | 2021 |
