Aerodynamic optimization of hypersonic blunted waveriders based on symbolic regression

doi:10.1016/j.ast.2023.108801

	Aerodynamic optimization of hypersonic blunted waveriders based on symbolic regression
	Guo SQ(郭帅旗); Liu W(刘文); Zhang CA(张陈安); Liu Y(刘洋); Wang FM(王发民)
通讯作者	Liu, Wen(lw@imech.ac.cn)
发表期刊	AEROSPACE SCIENCE AND TECHNOLOGY
	2024
卷号	144 页码:18
ISSN	1270-9638
摘要	The previous waverider optimization was mainly focused on the original configuration with sharp leading edge. In actual application, the leading edge must be blunted for hypersonic flight, which can change the aerodynamic performance significantly. Thus, the optimum waverider with sharp leading edge doesn't mean that it's still optimum after bluntness. To solve the problem, this paper first investigates the influence mechanism of leading edge bluntness on the aerodynamic performance of the waveriders in detail. And the novel methodology of symbolic regression is employed to establish an analytical pressure increment model for the original waverider caused by the bluntness effects. Then an efficient aerodynamic model for the blunted waverider is constructed by combining traditional approximate methods and the pressure increment model, which is further incorporated into the Genetic Algorithm optimization framework. Results show that the resulting blunted optimized waveriders have distinctly different shapes and better aerodynamic performance compared to previous optimization that considers only sharp leading edge. And as the bluntness radius or the design lift increases, the improvement of lift-to-drag ratio (L/D) turns larger. Finally, when the center of pressure is constrained during the optimization, the blunted optimized waverider exhibits both better trim characteristic and higher L/D.
关键词	Hypersonic waverider Aerodynamic model Symbolic regression Bluntness effect
DOI	10.1016/j.ast.2023.108801
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001137568700001
关键词[WOS]	BOUNDARY-LAYER DISPLACEMENT ; LEADING-EDGE BLUNTNESS ; DESIGN ; FLOW ; CONFIGURATIONS ; VEHICLES ; ANALOGY
WOS研究方向	Engineering
WOS类目	Engineering, Aerospace
资助项目	National Natural Science Foundation of China[11902324] ; Strategic Priority Research Program (A) of Chinese Academy of Science[XDA17030000] ; Youth Innovation Promotion Association CAS[2023023]
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Program (A) of Chinese Academy of Science ; Youth Innovation Promotion Association CAS
论文分区	一类
力学所作者排名	1
RpAuthor	Liu, Wen
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/94001
专题	高温气体动力学国家重点实验室
作者单位	Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Inst Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Guo SQ,Liu W,Zhang CA,et al. Aerodynamic optimization of hypersonic blunted waveriders based on symbolic regression[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2024,144:18.
APA	郭帅旗,刘文,张陈安,刘洋,&王发民.(2024).Aerodynamic optimization of hypersonic blunted waveriders based on symbolic regression.AEROSPACE SCIENCE AND TECHNOLOGY,144,18.
MLA	郭帅旗,et al."Aerodynamic optimization of hypersonic blunted waveriders based on symbolic regression".AEROSPACE SCIENCE AND TECHNOLOGY 144(2024):18.