Shape design to minimize the peak heat-flux of blunt leading-edge

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Shape design to minimize the peak heat-flux of blunt leading-edge
	Cui K(崔凯); Hu SC(胡守超); Cui K(崔凯); Cui K(崔凯)
	2013
会议名称	51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
会议日期	JAN 07-10, 2013
通讯作者邮箱	kcui@imech.ac.cn
会议地点	Grapevine, TX, United states
期号	AIAA 2013-0233
通讯作者	崔凯
中文摘要	To minimize the peak heat-flux of hypersonic blunt leading-edge, the Mini-Max optimization model is introduced for the first time for aerothermodynamics optimization. The surface heat-flux is obtained by resolving Navier-Stokes equations, and only the frozen flow is considered. The computational fluid dynamics (CFD) based Genetic Algorithm is used as the optimizer. A novel 2-D profile of leading-edge is obtained and the peak heat-flux is significantly reduced. Compared to the commonly used circular leading-edge, there is a large area of high temperature, high pressure in the front part of leading-edge, together with greater shock stand-off distance. The thickness of thermal boundary layer is increased about 40% at the stagnation point, the peak heat-flux is decreased about 20% and the heat-flux distribution is little changed in the vicinity of stagnation point. The robustness analysis shows that the favorable performance of the optimal 2-D profile is universally effective, i.e., it can effectively decrease the peak heat-flux by about 20% for various wall temperatures, Mach numbers, flight altitudes and thicknesses of the leading-edge as compared with the corresponding case of circular leading-edge. Although the reduction scope of peak heat-flux decreases with the change of angle-of-attack, but the peak heat-flux can still be decreased by more than 4% when the angle-of-attack is not greater than 15°. Several axisymmetric cases are also investigated in this paper, and the circular cone is taken as the benchmark, the peak heat-flux around an axisymmetric blunt cone, which is generated by the corresponding optimal 2-D profile, is also reduced by about 25%. Similarly, the distribution of heat-flux around the stagnation point is almost unchanged.
收录类别	EI
产权排序	[Cui, Kai;Hu, Shou-Chao] State Key Laboratory of High-temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
会议主办者	American Institute for Aeronautics and Astronautics (AIAA)
会议网址	http://arc.aiaa.org/doi/pdf/10.2514/6.2013-233
会议录	51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
会议录出版者	AMER INST AERONAUT ASTRONAUT, RESTON
语种	英语
ISBN号	9781624101816
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/48271]
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	Cui K(崔凯); Cui K(崔凯)
推荐引用方式 GB/T 7714	Cui K,Hu SC,Cui K,et al. Shape design to minimize the peak heat-flux of blunt leading-edge[C]. 见:51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013. Grapevine, TX, United states. JAN 07-10, 2013.http://arc.aiaa.org/doi/pdf/10.2514/6.2013-233.