西华大学学报（自然科学版）2024，Vol.43Issue(2)：18-28,11.DOI:10.12198/j.issn.1673-159X.5204
不同迎角下逆向喷流减阻降热特性研究
Study on Drag and Heat Reduction Performance of Opposing Jet at Different Angle of Attack
黎凯昕 1董昊 2张旭东 1王元靖3
作者信息
- 1. 南京航空航天大学航空学院,江苏南京 210016||非定常空气动力学与流动控制工业和信息化部重点实验室,江苏南京 210016
- 2. 南京航空航天大学航空学院,江苏南京 210016||非定常空气动力学与流动控制工业和信息化部重点实验室,江苏南京 210016||南京航空航天大学航空航天结构力学及控制全国重点实验室,江苏南京 210016
- 3. 中国空气动力研究与发展中心高速所,四川绵阳 622762
- 折叠
摘要
Abstract
In this paper,the numerical simulation method of N-S(Navier-Stokes)equation based on SST k-ω turbulence model is used to explore the influence of the interference flow field generated by the in-teraction between the coaxial or non-coaxial opposing jet and the blunt body with the free stream under dif-ferent angle of attack on the drag and heat reduction effect.The results show that compared with the no-jet condition,the coaxial opposing jet can effectively reduce the drag coefficient of the blunt body,and the drag coefficient can be reduced by 32.53%when the angle of attack is 2°.When the angle of attack is small,the coaxial opposing jet can effectively reduce the wall Stanton number.And when the angle of attack is large,the wall Stanton number on the windward side becomes large and that on the leeward side is greatly reduced.The change of the axial angle between the opposing jet and the blunt body affects the flow field and the drag and heat reduction effect.As the angle between the jet and the axis increases,the wall pressure on the windward side gradually decreases,and there is a jet angle that can make the peak value of the wall Stanton number reach the optimal solution.Compared with the coaxial opposing jet,when the angle of at-tack is 5°,the peak value of the wall Stanton number can be reduced by 9.02%,and when the angle of at-tack is 8°,the drag reduction effect can be increased by up to 1.92%.关键词
逆向喷流/流动控制/减阻降热/超声速/迎角Key words
opposing jet/flow control/drag and heat reduction/supersonic/angle of attack分类
航空航天引用本文复制引用
黎凯昕,董昊,张旭东,王元靖..不同迎角下逆向喷流减阻降热特性研究[J].西华大学学报（自然科学版）,2024,43(2):18-28,11.
