Zobrazeno 1 - 10
of 503
pro vyhledávání: '"渦"'
Publikováno v:
Kongjian kexue xuebao, Vol 44, Pp 517-527 (2024)
已有研究发现金星磁尾的太阳风氢离子(H+)和金星电离层氧离子(O+)存在大尺度涡流结构, 该涡流从磁尾望向星球是逆时针的. 为了确定该涡流的存在性, 利用金星快车等离子体和高能原子分析
Externí odkaz:
https://doaj.org/article/318d36ffa21448aea113b1f28d4342ff
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 42, Iss 1, Pp 149-156 (2024)
The performance model was established to study the performance of mixed exhaust turbofan engine with pulse detonation combustor (PDC) in the bypass duct. The effects of the total pressure loss of isolator and bypass circulation parameters on the char
Externí odkaz:
https://doaj.org/article/fa1ea69c97104890b194ccd67bb266e4
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 41, Iss 5, Pp 895-904 (2023)
Safety evaluation for ice accretion is one of the most important jobs for the airworthiness certification of commercial aircraft. Ice accretion would induce strong performance degradation of lifting surfaces by modifying the geometry of the leading e
Externí odkaz:
https://doaj.org/article/3340eca7181e44afbf18c56422ec4803
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 41, Iss 4, Pp 732-739 (2023)
Large-scale coherent structures in a dual-swirl direct-mix combustor and the effect of the pilot swirler blade angle variations (35°, 40° and 45°) on them are investigated by using the large eddy simulations. The results show that no apparent cohe
Externí odkaz:
https://doaj.org/article/a82c4fbbdbb54ee5832f1dd865a3e9d9
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 41, Iss 2, Pp 319-328 (2023)
Flow-induced noise hybrid prediction method based on sound wave boundary condition is an effective numerical method to deal with a flow-induced noise problems of complex configuration. This method can not only finely simulate the sound source, but al
Externí odkaz:
https://doaj.org/article/55db57b447f649059cf866da487601f4
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 41, Iss 2, Pp 310-318 (2023)
Water ramjet is the most ideal power propulsion device for high-speed underwater weapons. However, failure to start it at low-speed makes it hard for the engine to be widely used. In order to solve the problem of starting water ramjet at low-speed, a
Externí odkaz:
https://doaj.org/article/ef7682c848954c1fbd159af4712f44d3
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 41, Iss 1, Pp 188-197 (2023)
In order to effectively utilize the tidal current energy in offshore wind farms, a swing oscillating hydrofoil system for tidal current energy capture is proposed. The system is constructed with oscillating hydrofoils as tidal current energy capture
Externí odkaz:
https://doaj.org/article/275f00b908664942a817e399843a5d43
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 40, Iss 5, Pp 1155-1163 (2022)
对涡轴发动机压气机叶片附着物进行分析, 根据附着物特征研究了针对性的清洗介质并进行了实验验证, 为压气机性能恢复奠定了基础。采用扫描电子显微镜、热重分析、红外光谱等方法对压
Externí odkaz:
https://doaj.org/article/2491ba2a97aa46698351280a2b65f572
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 40, Iss 4, Pp 778-786 (2022)
The highly-efficient and unsteady aerodynamic simulation of turbomachinery is urgently required. The panel-vortex particle method is coupled with a far free field sound model established with the Lowson method and aims to fast predict aerodynamic and
Externí odkaz:
https://doaj.org/article/00f161d74d3e4a5c8b9dbc3dfed7b0a4
Publikováno v:
Guangtongxin yanjiu, Vol , Pp 29-32,37 (2021)
针对传统阶梯型高阶螺旋相位板在光纤端面上制作难度大和使用过程中容易损坏的问题，文章提出了一种在光纤端面上制作平面型螺旋相位板的设计方案。这种相位板在不同方位角上高度相
Externí odkaz:
https://doaj.org/article/73f066d264ba484ca2f558b23a177dbe