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Numerical study on reflection of an oblique detonation wave on an outward turning wall
Wang KL(王宽亮)1; Zhang ZJ(张子健)2,3; Yang PF(杨鹏飞)2,3; Teng HH(滕宏辉)1
Corresponding AuthorTeng, Honghui(
Source PublicationPHYSICS OF FLUIDS
AbstractOblique detonation waves (ODWs) have been studied widely as the basis of detonation-based hypersonic engines, but there are few studies on ODWs in a confined space. This study simulates ODW reflection on a solid wall before an outward turning corner for a simplified combustor-nozzle flow based on a two-step kinetic model. Numerical results reveal three types of ODW structures: stable, critical, and unstable. When the reflection occurs at the turning point, the stable ODW structure remains almost the same as before reflection. When the wave reflects at the wall before the turning point, either the critical structure or the unstable structure arises, which has never been investigated before. Both structures have the same initial two-section detonation surface: but the critical one becomes stationary at a certain position, while the unstable one keeps traveling upstream. By adjusting the location of the expansion wave and degree of the turning angle, the difference of the two structures is attributed to the thermal choking appearing only in the unstable structure. The thermal choking is achieved by the merging of subsonic zones, whose dependence on the various parameters is discussed.
Indexed BySCI ; EI
WOS IDWOS:000524279900002
WOS Research AreaMechanics ; Physics
WOS SubjectMechanics ; Physics, Fluids & Plasmas
Funding ProjectNational Natural Science Foundation of China (NSFC)[11822202] ; National Natural Science Foundation of China (NSFC)[91641130]
Funding OrganizationNational Natural Science Foundation of China (NSFC)
ContributorTeng, Honghui
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Document Type期刊论文
Affiliation1.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China;
2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China;
3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang KL,Zhang ZJ,Yang PF,et al. Numerical study on reflection of an oblique detonation wave on an outward turning wall[J]. PHYSICS OF FLUIDS,2020,32(4):10.
APA 王宽亮,张子健,杨鹏飞,&滕宏辉.(2020).Numerical study on reflection of an oblique detonation wave on an outward turning wall.PHYSICS OF FLUIDS,32(4),10.
MLA 王宽亮,et al."Numerical study on reflection of an oblique detonation wave on an outward turning wall".PHYSICS OF FLUIDS 32.4(2020):10.
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