| Premixed flame ignition: Theoretical development | |
| Yu DH(于德海)1,2; Chen, Zheng1 | |
| Corresponding Author | Chen, Zheng([email protected]) |
| Source Publication | PROGRESS IN ENERGY AND COMBUSTION SCIENCE
 |
| 2024-09-01 | |
| Volume | 104Pages:42 |
| ISSN | 0360-1285 |
| Abstract | Premixed flame ignition is a fundamental issue in combustion. A basic understanding of this phenomenon is crucial for fire safety control and for the development of advanced combustion engines. Significant efforts have been devoted to understanding the mechanisms of ignition and determining critical ignition conditions, such as critical flame radius, minimum ignition energy, and minimum ignition power, which have remained challenging research topics for centuries. This review provides an in-depth investigation of the forced-ignition of laminar premixed flames in a quiescent flammable mixture, with emphasis on theoretical developments, particularly those based on activation energy analysis. First, the fundamental concepts are overviewed, including spark ignition, characteristic time scales, and critical ignition conditions. Then, the chronological development of premixed flame ignition theories is discussed, including homogeneous explosion, thermal ignition theory, flame ball theory, quasi-steady ignition theory, and, more importantly, transient ignition theory. Premixed flame ignition consists of three stages: flame kernel formation, flame kernel expansion, and transition to a selfsustaining flame. These stages are profoundly affected by the coupling of positive stretch with preferential diffusion, characterized by the Lewis number. Specifically, positive stretch makes the expanding ignition kernel weaker at larger Lewis numbers, consequently increasing the critical ignition radius and MIE. The premixed flame ignition process is dominated by flame propagation dynamics. Both quasi-steady and transient ignition theories demonstrate that the critical flame radius for premixed ignition differs from either flame thickness (by thermal ignition theory) or flame ball radius (by flame ball theory). Particularly, the transient ignition theory appropriately acknowledges the "memory effect" of external heating, offering the most accurate description of the evolution of the ignition kernel and the most sensible evaluation of minimum ignition energy. In addition, the effects of transport and chain-branching reactions of radicals, finite droplet vaporization, and repetitive heating pulses on premixed flame ignition are discussed. Finally, a summary of major advances is provided, along with comments on the applications of premixed flame ignition theory in ignition enhancement. Suggested directions for future research are presented. |
| Keyword | Ignition Premixed flame Minimum ignition energy Flame propagation |
| DOI | 10.1016/j.pecs.2024.101174 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001267030200001 |
| WOS Keyword | LASER-INDUCED SPARK ; DETAILED NUMERICAL-SIMULATION ; LIVENGOOD-WU CORRELATION ; PROPANE AIR MIXTURES ; KERNEL DEVELOPMENT ; DISCHARGE CHARACTERISTICS ; NONDIFFUSIVE IGNITION ; COMBUSTION DYNAMICS ; CONVENTIONAL SPARK ; DIRECT INITIATION |
| WOS Research Area | Thermodynamics ; Energy & Fuels ; Engineering |
| WOS Subject | Thermodynamics ; Energy & Fuels ; Engineering, Chemical ; Engineering, Mechanical |
| Funding Project | National Natural Science Foundation of China[52176096] ; National Natural Science Foundation of China[52006001] ; National Natural Science Foundation of China[51861135309] ; National Natural Science Foundation of China[51322602] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Chen, Zheng |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/95972 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Peking Univ, Coll Engn, CAPT, SKLTCS,HEDPS,Dept Aeronaut & Astronaut, Beijing 100871, Peoples R China; 2.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Inst Mech, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Yu DH,Chen, Zheng. Premixed flame ignition: Theoretical development[J]. PROGRESS IN ENERGY AND COMBUSTION SCIENCE,2024,104:42.Rp_Au:Chen, Zheng |
| APA | 于德海,&Chen, Zheng.(2024).Premixed flame ignition: Theoretical development.PROGRESS IN ENERGY AND COMBUSTION SCIENCE,104,42. |
| MLA | 于德海,et al."Premixed flame ignition: Theoretical development".PROGRESS IN ENERGY AND COMBUSTION SCIENCE 104(2024):42. |
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