Large eddy simulation of ammonia-diesel dual fuel spray combustion: Effects of ambient condition on ignition characteristics
文献类型：期刊论文
| 作者 | Zhang, Junqing2,3; Chen, Danan2,3; Li, Xing2,3; Li, Jun2,3; Huang, Hongyu2,3; Kobayashi, Noriyuki1 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 501页码:26 |
| 关键词 | Ammonia-Diesel Combustion Dual Fuel Engine Ignition Characteristics Combustion Optimization Strategy Large Eddy Simulation |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2024.157698 |
| 通讯作者 | Li, Jun(lijun@ms.giec.ac.cn) |
| 英文摘要 | Ammonia is considered as a promising alternative fuel in internal combustion engine, and ammonia-diesel high pressure injection dual fuel (HPDF) engine has garnered intense research interests. However, the ignition process of liquid ammonia spray combustion remains poorly understood. This study aims to numerically investigate the ignition process of ammonia spray in HPDF combustion mode under varying ambient conditions using large eddy simulation. Numerical results exhibit good consistency with experimental data. The present study proposed a new definition of flame index for ammonia spray combustion, providing a new research perspective of ammonia spray combustion. Under ammonia-diesel HPDF combustion mode, the pilot ignition delay (diesel) is sensitive to ambient condition, the main ignition delay (ammonia) is dominated by spray interaction. Employing increasing ambient pressure strategy cannot significantly enhance ignition process. Throughout the combustion process, the flame transitions from diesel flame to two-layer flame, and finally transforms into ammonia flame, following ammonia injection direction. When applying exhaust gas recirculation (EGR) strategy, ignition process is primarily influenced by ambient oxygen concentration, but insensitive to ambient temperature. Additionally, EGR strategy will lower flame temperature, heat release rate and combustion zone area, and heighten the mixing requirements of ammonia vapor, thereby increasing the risk of misfire under high ammonia energy fraction. |
| 资助项目 | National Natural Science Foundation of China[52176139] ; Guangdong Basic and Applied Basic Research Foundation[2023B1515120012] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001361163800001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Natural Science Foundation of China ; Guangdong Basic and Applied Basic Research Foundation |
| 源URL | [http://ir.giec.ac.cn/handle/344007/43581]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Li, Jun |
| 作者单位 | 1.Nagoya Univ, Dept Chem Syst Engn, Nagoya, Aichi 4648603, Japan 2.Univ Sci & Technol China, Sch Energy Sci & Engn, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Junqing,Chen, Danan,Li, Xing,et al. Large eddy simulation of ammonia-diesel dual fuel spray combustion: Effects of ambient condition on ignition characteristics[J]. CHEMICAL ENGINEERING JOURNAL,2024,501:26. |
| APA | Zhang, Junqing,Chen, Danan,Li, Xing,Li, Jun,Huang, Hongyu,&Kobayashi, Noriyuki.(2024).Large eddy simulation of ammonia-diesel dual fuel spray combustion: Effects of ambient condition on ignition characteristics.CHEMICAL ENGINEERING JOURNAL,501,26. |
| MLA | Zhang, Junqing,et al."Large eddy simulation of ammonia-diesel dual fuel spray combustion: Effects of ambient condition on ignition characteristics".CHEMICAL ENGINEERING JOURNAL 501(2024):26. |
入库方式： OAI收割
来源：广州能源研究所
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