Effects of thermal wall conditions on rotating detonation

doi:10.1016/j.compfluid.2016.09.008

CORC > 北京大学 > 工学院

	Effects of thermal wall conditions on rotating detonation
	Wang, Yuhui ; Wang, Jianping ; Qiao, Wenyou
刊名	COMPUTERS & FLUIDS
	2016
关键词	Rotating detonation Boundary oblique detonation Numerical simulation Thermal wall conditions CONTINUOUS-SPIN DETONATION CROSS-SECTION COMBUSTOR MIXTURE FLOW WAVE
DOI	10.1016/j.compfluid.2016.09.008
英文摘要	Rotating detonation in an annulus full of stoichiometric hydrogen and air is numerically studied to figure out the effects of thermal wall conditions on detonation. A transient density-based solver with implicit formulation, a laminar finite-rate model with one step reaction, and a standard k-epsilon model are employed. It is found that after some time from ignition, boundary oblique detonation near the walls occurs and is included into the Y-shaped rotating detonation formed from the detonation front and transverse wave. The transverse wave is comprised of detonation attached to the rotating detonation front and shock. Boundary oblique detonation occurs with high wall temperature conditions, but it does not occur with adiabatic wall conditions. It is the rapid reaction caused by the high wall temperature that induces boundary oblique detonation. The length of boundary oblique detonation is increased with increasing wall temperature and time. The average velocity of rotating detonation for higher wall temperature is higher. Why continuous propagation of rotating detonation in engines without cooling is not broken by deflagration due to hot walls is explained. Numerical results show that transverse waves produce sub-peaks of pressure traces in the experiments. (C) 2016 Elsevier Ltd. All rights reserved.; Doctor Research Foundation of Southwest University of Science and Technology [14zx7141]; National Natural Science Foundation of China [11502247, 11602207]; SCI(E); EI; ARTICLE; aowuki@163.com; 59-71; 140
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/449967]
专题	工学院
推荐引用方式 GB/T 7714	Wang, Yuhui,Wang, Jianping,Qiao, Wenyou. Effects of thermal wall conditions on rotating detonation[J]. COMPUTERS & FLUIDS,2016.
APA	Wang, Yuhui,Wang, Jianping,&Qiao, Wenyou.(2016).Effects of thermal wall conditions on rotating detonation.COMPUTERS & FLUIDS.
MLA	Wang, Yuhui,et al."Effects of thermal wall conditions on rotating detonation".COMPUTERS & FLUIDS (2016).