Effect of helical fins on the combustion performance in a micro-step combustor
文献类型：期刊论文
| 作者 | Zhang, Zheng3; Shen, Wubingyi1; Yao, Wei2,3 ; Wang, Qiu3; Zhao, Wei2,3; Wang Q(汪球); Zhao W(赵伟); Wang Q(汪球); Wang Q(汪球); Yao W(姚卫)
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| 刊名 | FUEL
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| 出版日期 | 2022-07-01 |
| 卷号 | 319页码:13 |
| 关键词 | Micro-combustion Helical fin Combustion performance Conjugate heat transfer Mixing |
| ISSN号 | 0016-2361 |
| DOI | 10.1016/j.fuel.2022.123718 |
| 通讯作者 | Yao, Wei(weiyao@imech.ac.cn) |
| 英文摘要 | This study proposed a novel helical-fin-assisted micro-step Helix combustor to improve the performance of micro-combustors under high flow rates. The effects of the helical fins on the flow and combustion characteristics were analyzed with the aid of detailed hydrogen-air chemistry and a conjugated heat transfer mode. The performance of the proposed Helix combustor and the conventional micro-step combustor was compared. With the increase of the inlet velocity, two flame stabilization modes can be identified, i.e., the helical-fin-anchored flame and the traditional step-stabilized flame. The intensified heat transfer conjugation between the flame and helical fins enables the ignition and stabilization of the premixed flame before the inlet velocity reaches 34 m/s. The swirl flow induced by the helical fins reduces the length of the recirculation zones behind the step while augmenting the mixing between the hydrogen and the high-temperature products, which finally improves the combustion efficiencies. The helical-fin-anchored flame is preferred for thermo-electric/photovoltaic systems due to the uniform yet high wall temperature, as well as higher thermal efficiency. Meanwhile, the step-stabilized flame in the proposed combustor shows advantages of higher combustion efficiency and higher exhaust temperature for micro-engines under higher inlet velocities. |
| WOS关键词 | PREMIXED HYDROGEN/AIR FLAMES ; HOT SURFACE IGNITION ; THERMAL PERFORMANCE ; WALL TEMPERATURE ; NARROW CHANNELS ; HEAT-TRANSFER ; AIR ; METHANE/AIR ; STABILITY ; RECIRCULATION |
| 资助项目 | National Key Research and Devel-opment Program of China[2019YFB1704200] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000783215200005 |
| 资助机构 | National Key Research and Devel-opment Program of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/88889]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 通讯作者 | Yao, Wei |
| 作者单位 | 1.Xiamen Univ, Sch Aerosp Engn, Xiamen 361102, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zheng,Shen, Wubingyi,Yao, Wei,et al. Effect of helical fins on the combustion performance in a micro-step combustor[J]. FUEL,2022,319:13. |
| APA | Zhang, Zheng.,Shen, Wubingyi.,Yao, Wei.,Wang, Qiu.,Zhao, Wei.,...&张政.(2022).Effect of helical fins on the combustion performance in a micro-step combustor.FUEL,319,13. |
| MLA | Zhang, Zheng,et al."Effect of helical fins on the combustion performance in a micro-step combustor".FUEL 319(2022):13. |
入库方式： OAI收割
来源：力学研究所
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