Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Qihao Qin"'
Publikováno v:
Aerospace, Vol 11, Iss 3, p 188 (2024)
In this study, we propose a novel dynamic mode decomposition (DMD) energy sorting criterion that works in conjunction with the conventional DMD amplitude-frequency sorting criterion on the high-dimensional schlieren dataset of the unsteady flow of a
Externí odkaz:
https://doaj.org/article/4e710fd4c7d54fdd8007a863a5848677
Publikováno v:
AIAA Journal. 59:2014-2026
This Paper is a computational investigation of a scramjet nozzle design based on maximum thrust theory and its feasibility analysis. A new design method for a two-dimensional complete thrust-optimi...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61599a169eb353e2abef46c1f1c2677b
https://doi.org/10.2514/1.j059846
https://doi.org/10.2514/1.j059846
Publikováno v:
Acta Astronautica. 182:383-398
In this paper, supersonic unsteady flows around the spiked cylinder are investigated through two-dimensional (2D) and three-dimensional (3D) unsteady Reynolds-averaged Navier–Stokes (URANS) approaches. Three types of spikes are used to provoke puls
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc799aa72d05764c33ca11f345446949
https://doi.org/10.1016/j.actaastro.2021.02.030
https://doi.org/10.1016/j.actaastro.2021.02.030
Publikováno v:
Aerospace Science and Technology. 133:108129
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb44c2ba267e744e7d95bc28d5b5ed44
https://doi.org/10.1016/j.ast.2023.108129
https://doi.org/10.1016/j.ast.2023.108129
Publikováno v:
Physics of Fluids. 35:016118
Supersonic axisymmetric expansion flow is a typical and fundamental issue in gas dynamics. It plays a vital role in the high-speed external and internal flow fields regarding the contour design and performance evaluation of supersonic/hypersonic vehi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c3a4839761ec7e6ef72eab4609b1345
https://doi.org/10.1063/5.0134698
https://doi.org/10.1063/5.0134698
Autor:
Jinglei Xu, Qihao Qin
Publikováno v:
Acta Astronautica. 162:481-496
There exist two distinct modes of flow instability, namely pulsation and oscillation, related to the flat-ended cylinder with pointed spike in high-speed flights. A new method is proposed in this article to weaken the pressure fluctuations and aerohe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e072d29c1a1f3d73394816fbb67d531
https://doi.org/10.1016/j.actaastro.2019.05.030
https://doi.org/10.1016/j.actaastro.2019.05.030
Autor:
Qihao Qin, Jinglei Xu
Publikováno v:
Acta Astronautica. 159:17-26
A novel thermal protection concept that combines the aerodome and cooling nitrogen is introduced for aeroheating reduction in high-speed flights. Study involves the fluid–thermal interaction between the blunt body and surrounding fluid. After detai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e28589e3f671d83e392e7cd32a4049cb
https://doi.org/10.1016/j.actaastro.2019.03.042
https://doi.org/10.1016/j.actaastro.2019.03.042
Autor:
Jinglei Xu, Qihao Qin
Publikováno v:
Aerospace Science and Technology. 86:520-533
Thermal protection is one of the major challenges faced by engineers when designing hypersonic vehicles. Mounting a spike ahead of a vehicle's blunt nose provides at least a partial solution for the longtime aeroheating caused by high-speed flow; how
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5f0e0b56b7211c894d4406bdfd1875e
https://doi.org/10.1016/j.ast.2019.01.046
https://doi.org/10.1016/j.ast.2019.01.046
Publikováno v:
Aerospace Science and Technology. 127:107690
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3a86276beaafbcc3b7837c991827302
https://doi.org/10.1016/j.ast.2022.107690
https://doi.org/10.1016/j.ast.2022.107690
Publikováno v:
Physics of Fluids. 34:076114
A high-temperature effect is crucial in cold-to-hot correlation for thrust nozzles to employ experimental data of cold flow to predict the real flight performance of hot gas. The high-temperature nozzle flow behaves beyond the classical gas dynamics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::689f3b881e68f1f4c4b6bd861da4e363
https://doi.org/10.1063/5.0098894
https://doi.org/10.1063/5.0098894