双射流激波针在高超声速下的减阻降热特性OA北大核心CSTPCD
Drag and heat reduction performance of a dual-jet spike configuration in hypersonic flow
严酷的气动力和气动热环境是制约高超声速飞行器发展的两个重要因素,如何高效地降低高超声速飞行过程中的阻力和热流一直是设计者们追求的目标.为此,本文提出了一种结合后向射流和根部逆向射流的双射流激波针新构型.数值模拟研究发现:该构型能够利用后向射流产生的反作用力削减逆向射流附加阻力对减阻效果的影响,因此与无射流和单一射流方案相比,双射流激波针的流场结构显著改变,减阻降热效果极大提高.此外,增大激波针的长径比(L/D)有利于提高双射流激波针的减阻效果,但…查看全部>>
High aerodynamic drag and severe aeroheating are the two most important factors impeding the development of hypersonic vehicles.Thus,how to reduce the drag and heat flux effectively in hypersonic flight has attracted worldwide attention.In this paper,a novel strategy combining a spike and a dual-jet has been proposed for the drag reduction and thermal protection.In this configuration,the reaction force generated by the root jet can balance the additional res…查看全部>>
王俊峰;李珺;罗世彬
中南大学 航空航天技术研究院,长沙 410083中南大学 航空航天技术研究院,长沙 410083中南大学 航空航天技术研究院,长沙 410083
减阻热防护射流激波针高超声速
drag reductionthermal protectionjetspikehypersonic
《空气动力学学报》 2024 (2)
34-46,13
国家自然科学基金(52202454)湖南省重点研发计划项目(2021GK2011,2023GK2022)
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