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An Experimental Investigation of Supersonic Combustion of Mildly Cracked N-Dodecane

文献类型：期刊论文

作者Cui, Naifu3; Rao, Wei2; Li, Yujun1,3; Zhang, Taichang1,3; Fan, Xuejun1,3; Fan XJ(范学军); Zhang TC(张泰昌)
刊名COMBUSTION SCIENCE AND TECHNOLOGY
出版日期2022-10-16
页码20
ISSN号0010-2202
关键词Mildly cracked n-dodecane supersonic combustion regenerative cooling
DOI10.1080/00102202.2022.2135096
通讯作者Zhang, Taichang(taichang@imech.ac.cn)
英文摘要In this paper, a novel two-stage hydrocarbon fuel heating and delivery system was used to more accurately simulate the state of fuel in the cooling channel of the regenerative cooling engine. Mildly cracked (<10%) experiments of n-dodecane were conducted by using the new heating system and pyrolysis products were sampled and analyzed. The ignition delay time and laminar flame speed of the cracked products were different from those of the surrogate gas fuel. When the temperature is 1100 K, the ignition delay time of the cracked products are similar to 50% higher than that of surrogate gas fuel. The laminar flame speed of the cracked products is about 30% lower than that of surrogate gas fuel at the equivalence ratio of 1.0. The supersonic combustion experiments of mildly cracked and different equivalence ratios n-dodecane were also employed at Mach number 3.0 of the isolator entrance, with total temperature similar to 1550 K and total pressure similar to 1.5 MPa. The static pressure along the axis of combustor was measured, while the velocity and temperature of the airflow at the exit of combustor were also measured by the tunable diode laser absorption spectroscopy (TDLAS). The distributions of airflow velocity, static temperature, and total temperature along the combustor at different conditions were analyzed through a one-dimensional analysis method. The deviations of velocity and temperature of the airflow are less than 4% and -6%, respectively, which indicates the calculation is in great accordance with the TDLAS detections. The experimental data will be helpful for validating the simulation of supersonic combustion, and studying the influence of mildly cracked fuel on supersonic combustion characteristics.
WOS关键词KEROSENE ; ETHYLENE ; MIXTURE ; HYDROGEN ; METHANE
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDA17030100] ; Science and Technology Innovation Special Zone Project ; National Key Project[GJXM92579]
WOS研究方向Thermodynamics ; Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000869241500001
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; Science and Technology Innovation Special Zone Project ; National Key Project
源URL[http://dspace.imech.ac.cn/handle/311007/90418]  
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Zhang, Taichang
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China
2.Space Engn Univ, Dept Aerosp Sci & Technol, State Key Lab Laser Prop & Applicat, Beijing, 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		 Cui, Naifu,Rao, Wei,Li, Yujun,et al. An Experimental Investigation of Supersonic Combustion of Mildly Cracked N-Dodecane[J]. COMBUSTION SCIENCE AND TECHNOLOGY,2022:20.
APA Cui, Naifu.,Rao, Wei.,Li, Yujun.,Zhang, Taichang.,Fan, Xuejun.,...&张泰昌.(2022).An Experimental Investigation of Supersonic Combustion of Mildly Cracked N-Dodecane.COMBUSTION SCIENCE AND TECHNOLOGY,20.
MLA Cui, Naifu,et al."An Experimental Investigation of Supersonic Combustion of Mildly Cracked N-Dodecane".COMBUSTION SCIENCE AND TECHNOLOGY (2022):20.

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来源：力学研究所

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