OKAFOR EKENECHUKWU CHIJIOKE

オカフォーチジオケエケネチュク | OKAFOR EKENECHUKWU CHIJIOKE

Affiliation and department：
Job title： Associate Professor
Homepage URL (1)： http://www.researcherid.com/rid/G-9651-2019

Research field (1)： Thermal engineering

Research keywords (11)： Ammonia combustion , Gas turbine , thermo-diffusive effects , flame stretch , flame instability , burning velocity , flame surface density , swirl stabilized burner flames , spherical flames , Combustion , Mechanical engineering

Research theme for competitive and other funds (2)：

2015 - 現在 Ammonia combustion
2023 - 2025 Investigation of a novel lean-lean two-stage combustion strategy for the control of NOx from swirl combustors fueled with mixtures of ammonia and hydrogen.

Papers (41)：

Ekenechukwu C. Okafor, Osamu Kurata, Hirofumi Yamashita, Norihiko Iki, Takahiro Inoue, Hyun Jo, Masayasu Shimura, Taku Tsujimura, Akihiro Hayakawa, Hideaki Kobayashi. Achieving high flame stability with low NO And Zero N2O and NH3 emissions during liquid ammonia spray combustion with gas turbine combustors. Proceedings of the Combustion Institute. 2024
Hirofumi Yamashita, Akihiro Hayakawa, Kohei Oku, Sophie Colson, Gauthier Reibel, Yi-rong Chen, K. D. Kunkuma A. Somarathne, Ekenechukwu C. Okafor, Taku Tsujimura, Shintaro Ito, et al. Visualization of liquid ammonia spray using 2p-SLIPI and comparison of liquid ammonia spray and gaseous ammonia combustion in a swirl combustor at atmospheric pressure. Fuel. 2024. 371. 131833
Osamu Kurata, Okafor Ekenechukwu Chijioke, Hirofumi Yamashita, Takahiro Inoue, Taku Tsujimura, Norihiko Iki, Akihiro Hayakawa, Hideaki Kobayashi. Enhancement of liquid ammonia combustion by a twin fluid atomizer. International Journal of Gas Turbine, Propulsion and Power Systems. 2024
Hirofumi Yamashita, Akihiro Hayakawa, Ekenechukwu C. Okafor, Sophie Colson, K. D. Kunkuma A. Somarathne, Taku Tsujimura, Shintaro Ito, Masahiro Uchida, Taku Kudo, Hideaki Kobayashi. Optimum primary equivalence ratio for rich-lean two-stage combustion of non-premixed ammonia/methane/air and ammonia/hydrogen/air flames in a swirling flow. Fuel. 2024. 368. 131598-131598
Hyun Jo, Masayasu Shimura, Osamu Kurata, Ekenechukwu Chijioke Okafor, Hirofumi Yamashita, Takahiro Inoue, Taku Tsujimura, Norihiko Iki, Yong Fan. Combustion and Emission Characteristics of an Ammonia Microgas Turbine Combustor With a Twin-Fluid Atomizer. Journal of Engineering for Gas Turbines and Power. 2024. 146. 11

ｍore...

MISC (8)：

Synthesis and Utilization Technology of Carbon Free Ammonia : Ammonia Initiative in Fukushima Renewable Energy Institute, AIST. 2021. 49. 2. 100-105
倉田修, OKAFOR Ekenechukwu Chijioke, 山下裕史, 山下裕史, 壹岐典彦, 辻村拓, 内田正宏, 伊藤慎太朗, 須田俊之, 早川晃弘, et al. Trial of Liquid Ammonia Spray Combustion for Gas Turbines. 燃焼シンポジウム講演論文集(CD-ROM). 2020. 58th
KURATA Osamu, HAYAKAWA Akihiro, KOBAYASHI Hideaki, IKI Norihiko, INOUE Takahiro, MATSUNUMA Takayuki, TSUJIMURA Taku, FURUTANI Hirohide, KAWANO Masato, ARAI Keisuke, et al. Dependence of unburnt ammonia on combustor inlet temperature of ammonia combustor of micro gas turbine. The Proceedings of the National Symposium on Power and Energy Systems. 2019. 2019. D122
倉田修, 壹岐典彦, 井上貴博, 辻村拓, 古谷博秀, 河野雅人, 新井啓介, Ekenechukwu Chijioke Okafor, 早川晃弘, 小林秀昭. Research and Development of Ammonia Combustion, Low-NOx, Rich-lean, Gas Turbine Combustor. 燃焼シンポジウム講演論文集. 2018. 56th
壹岐典彦, 倉田修, 井上貴博, 松沼孝幸, 辻村拓, 古谷博秀, 河野雅人, 新井啓介, OKAFOR Ekenechukwu Chijioke, 早川晃弘, et al. アンモニア燃焼ガスタービンにおける低NOx Rich-lean燃焼器の研究開発. 日本ガスタービン学会定期講演会講演論文集(CD-ROM). 2018. 46th

ｍore...

Books (2)：

Applications in: A. Valera-Medina, R. Banares-Alcantara (Eds.), Techno-Economic Challenges of Green Ammonia as Energy Vector
2020
Use of Ammonia for Heat, Power and Propulsion, in: A. Valera-Medina, R. Banares-Alcantara (Eds.), Techno-Economic Challenges of Green Ammonia as Energy Vector
Academic Press 2020

Lectures and oral presentations (15)：

On the control of NOx emission from a micro gas turbine combustor fueled with mixtures of methane and ammonia
(12th Asia-Pacific Conference on Combustion, ASPACC 2019 2019)
Product gas characteristics of strain stabilized ammonia/air premixed laminar flames
(12th Asia-Pacific Conference on Combustion, ASPACC 2019 2019)
Emission Characteristics of Turbulent Non-premixed CH4/NH3/air Swirl Flames through a Rich-Lean Gas Turbine-like Combustor at High Pressure
(12th Asia-Pacific Conference on Combustion, ASPACC 2019 2019)
Experimental and analytical study of thermo-diffusive effects in spherically propagating H2/CH4/air premixed flames
(52nd National Heat Transfer Symposium 2015)
Effects of CO and CH4 addition on the propagation of stoichiometric laminar hydrogen flames
(52nd Symposium (Japanese) on Combustion 2014)

ｍore...

Education (2)：

- 2015 Kyushu University Graduate School, Division of Engineering Science
- 2012 Kyushu University Graduate School, Division of Engineering Science

Professional career (3)：

博士 (Kyushu University)
修士 (Kyushu University)
Bachelor (University of Nigeria)

Work history (5)：

2019/04 - 現在 National Institute of Advanced Industrial Science and Technology Researcher
2015/10 - 2019/03 Tohoku University Institute of Fluid Science Researcher
2008/10 - 2009/03 Access Bank Plc Account officer/Marketer
2008/03 - 2008/09 Artisan Training School, Kebbi State Ministry of Works Trainer
2006/07 - 2007/01 Anambra Motor Manufacturing Company Limited (ANNAMCO) Intern

Awards (8)：

2021/12 - Asia Pacific Combustion Society Young Investigator Award
2021/11 - Combustion Society of Japan Combustion Society of Japan Insentive Award Advanced research on the co-combustion of ammonia and methane
2020/12 - Combustion Society of Japan 2020 Best Paper Award
2019/11 - Combustion Society of Japan 2019 Best Paper Award
2014/09 - Kyushu University- KAIST Joint Workshop on Frontiers in Mechanical Engineering Best Poster and Presentation Award, Kyushu University- KAIST Joint Workshop on Frontiers in Mechanical Engineering

Show all

Association Membership(s) (4)：

Heat Transfer Society of Japan , 日本燃焼学会 , Society of Automotive Engineers, International , 日本機会学会

※ Researcher’s information displayed in J-GLOBAL is based on the information registered in researchmap. For details, see here.

Return to Previous Page