| Near-field relaxation subsequent to the onset of oblique detonations with a two-step kinetic model | |
Teng, Honghui1 ; Ng, Hoi Dick2; Yang PF(杨鹏飞)3,4; Wang, Kuanliang1
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| Corresponding Author | Yang, Pengfei([email protected]) |
| Source Publication | PHYSICS OF FLUIDS
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| 2021-09-01 | |
| Volume | 33Issue:9Pages:11 |
| ISSN | 1070-6631 |
| Abstract | Initiation of an oblique detonation wave (ODW) results in a near-field region of curved detonation wave surface, which cannot be predicted by the detonation polar theory and lacks in-depth work on its features. In this study, Euler equations coupled with a two-step kinetic model are used to simulate ODW dynamics, and then the flow structures are analyzed by examining the asymptotic decay of local surface angle. The flow/reaction coupling is quantified by a non-dimensional Damkohler number Da(s) that is defined as the ratio of the characteristic flow and chemical reaction length along streamlines. The results demonstrate a spectrum of local strong solutions forms, which always happens when the ODW transition pattern is abrupt, but the strong solutions deviate from the isolated strong solution predicted by the polar theory. Furthermore, the abrupt transition leads to a strong peak of Da(s), while the smooth one leads to a bump. Various simulated cases indicate that the transition pattern becomes abrupt and the local strong solution arises when the maximum Da(s) reaches a critical range. |
| DOI | 10.1063/5.0059439 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000717657700001 |
| WOS Keyword | WAVE ; WEDGE ; COMBUSTORS ; INITIATION |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Project | National Natural Science Foundation of China[12002041] ; National Natural Science Foundation of China[11822202] ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; 111 Project[B16003] |
| Funding Organization | National Natural Science Foundation of China ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; 111 Project |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | Yang, Pengfei |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/88026 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China; 2.Concordia Univ, Dept Mech Ind & Aerosp Engn, Montreal, PQ H3G 1M8, Canada; 3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Teng, Honghui,Ng, Hoi Dick,Yang PF,et al. Near-field relaxation subsequent to the onset of oblique detonations with a two-step kinetic model[J]. PHYSICS OF FLUIDS,2021,33,9,:11.Rp_Au:Yang, Pengfei |
| APA | Teng, Honghui,Ng, Hoi Dick,杨鹏飞,&Wang, Kuanliang.(2021).Near-field relaxation subsequent to the onset of oblique detonations with a two-step kinetic model.PHYSICS OF FLUIDS,33(9),11. |
| MLA | Teng, Honghui,et al."Near-field relaxation subsequent to the onset of oblique detonations with a two-step kinetic model".PHYSICS OF FLUIDS 33.9(2021):11. |
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