BLUFF-BODY FLAMES IN HOT AND DILUTED ENVIRONMENTS
文献类型：会议论文
| 作者 | Liu CY.; Zhang J(张健) ; Yang T.; Ma YH.
|
| 出版日期 | 2018 |
| 会议日期 | JUN 24-28, 2018 |
| 会议地点 | Lake Buena Vista, FL |
| 页码 | UNSP V001T01A002 |
| 英文摘要 | Large eddy simulation/Flamelet progress variable approach is employed in current research to investigate how flame behaviour is influenced by bluff-body and coflow composition. We used Sydney bluff-body burner as the target burner. Computation grid in cylinder coordinates is approximately 2.7 million in total number, extended to the downstream location 80 times of jet diameter. Three coflow compositions with different oxygen ratio at the same inlet velocity are considered. Comparing to jet flames with hot and diluted coflow, instantaneous and statistical results showed that an introduction of bluff body preheats the fuel and shortens the flame length. At lower oxygen ratio condition, a weaker reaction zone emerged, marked by lower temperature and OH concentration; the flame appeared lifted gradually, leading to a potential MILD combustion. Besides, bluff-body effect behaves differently in these flames: at lower oxygen ratio condition, a large-scale distribution of CH2O appeared as a marker of partial premixing and preignition reaction in recirculation area; on the contrary, in higher oxygen ratio case, the recirculation area brings out more reactive fuel at lower speed and higher temperature, hence ignitable in the vicinity of bluff-body. |
| 资助机构 | National Natural Science Foundation of China [51376190, 11572330] |
| 会议录 | PROCEEDINGS OF THE ASME POWER CONFERENCE, 2018, VOL 1
 |
| 语种 | 英语 |
| ISBN号 | 978-0-7918-5139-5 |
| WOS记录号 | WOS:000456357300002 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/78568]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.{Liu, Chengyu、Zhang, Jian、Yang, Tao} Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China 2.{Ma, Yanhong} Beihang Univ, Sch Energy & Power Engn, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu CY.,Zhang J,Yang T.,et al. BLUFF-BODY FLAMES IN HOT AND DILUTED ENVIRONMENTS[C]. 见:. Lake Buena Vista, FL. JUN 24-28, 2018. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。