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Combustion Hysteresis Phenomenon in a Dual-Mode Scramjet

文献类型：期刊论文

作者Wang, Yu4; Yao W(姚卫)2,3; Zhang, Zheng4; Liu, Jianwen1
刊名AIAA JOURNAL
出版日期2024-12-06
页码14
关键词Combustion hysteresis Dual-mode scramjet Hydrogen fuels IDDES
ISSN号0001-1452
DOI10.2514/1.J064599
通讯作者Yao, Wei(weiyao@imech.ac.cn)
英文摘要The combustion hysteresis of a hydrogen-fueled ramp-based dual-mode scramjet under a flight Mach number of 5 was examined by using IDDES based on up to 115.75 million cells and a detailed 13s/33r H2/O2 mechanism. As is evident by the wall pressure measurements, the scramjet and ramjet modes were successfully reproduced for four global fuel equivalence ratios (Phi). However, a hysteresis in the mode transition occurs under the Phi-increasing and Phi-decreasing paths. A smooth ram-to-scramjet mode transition with gradual pressure drop occurs when Phi decreases to 0.08 under the Phi-decreasing path, whereas a jumped scram-to-ram mode transition with abrupt pressure rise occurs at Phi=0.17 under the Phi-increasing path. The combustion efficiency under the Phi-decreasing path is always higher than those under the Phi-increasing path within the hysteresis loop. This higher efficiency can be attributed to mixing enhancement and kinetic strengthening. For the former, longer residence time and richer vortexes promote the mixing. Meanwhile, the latter kinetic strengthening is contributed by the higher pressure, higher temperature, and richer radicals inherited from the former combustion state. A dynamic regulation mechanism realized through a feedback loop with a characteristic response time of 0.89 flush through time resides the pseudo-shock wave in the isolator and sustains the ramjet mode. Hysteresis causes more total pressure loss due to stronger pseudo-shock structure and more heat addition. Within the hysteresis loop, higher combustion efficiency dominates the higher thrust under Phi-decreasing path.
分类号一类/力学重要期刊
WOS关键词CONDITIONAL MOMENT CLOSURE ; LARGE-EDDY SIMULATION ; FLAME STABILIZATION ; SUPERSONIC COMBUSTION ; TRANSITION ; HYDROGEN ; MECHANISM
资助项目National Key Research and Development Program of Chinahttp://dx.doi.org/10.13039/501100012166[2021YFA0719204] ; National Key Research and Development Program of China[12272387] ; National Natural Science Foundation of China[XDB0500301] ; Strategic Project B of Chinese Academy of Sciences
WOS研究方向Engineering
语种英语
WOS记录号WOS:001376004600001
资助机构National Key Research and Development Program of Chinahttp://dx.doi.org/10.13039/501100012166 ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; Strategic Project B of Chinese Academy of Sciences
其他责任者Yao, Wei
源URL[http://dspace.imech.ac.cn/handle/311007/97780]  
专题力学研究所_高温气体动力学国家重点实验室
作者单位1.Beijing Power Machinery Inst, Beijing 100074, Peoples R China
2.Univ Chinese Acad Sciencs, Sch Engn Sci, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Beijing 100190, Peoples R China;
4.Chinese Acad Sci, Inst Mech, Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Wang, Yu,Yao W,Zhang, Zheng,et al. Combustion Hysteresis Phenomenon in a Dual-Mode Scramjet[J]. AIAA JOURNAL,2024:14.
APA Wang, Yu,姚卫,Zhang, Zheng,&Liu, Jianwen.(2024).Combustion Hysteresis Phenomenon in a Dual-Mode Scramjet.AIAA JOURNAL,14.
MLA Wang, Yu,et al."Combustion Hysteresis Phenomenon in a Dual-Mode Scramjet".AIAA JOURNAL (2024):14.

入库方式： OAI收割

来源：力学研究所

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