Zobrazeno 1 - 10
of 216
pro vyhledávání: '"K, Zachos"'
Publikováno v:
Aerospace, Vol 11, Iss 1, p 75 (2024)
High-speed air intakes often exhibit intricate flow patterns, with a specific type of flow instability known as ‘buzz’, characterized by unsteady shock oscillations at the inlet. This paper presents a comprehensive review of prior research, focus
Externí odkaz:
https://doaj.org/article/fb239e7f0ae54396a4cae73752376211
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 237:1557-1570
This paper focuses on the aerodynamic analysis and drag decomposition of an unpowered, low aspect ratio wing, using a far-field, exergy-based method. As opposed to traditional drag accounting methods, exergy balance provides insights into the amount
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b000d5eeda77c0b8f8a64d9abf53bd5
https://doi.org/10.1177/09544100221132649
https://doi.org/10.1177/09544100221132649
Wigner's quasi-probability distribution function in phase space is a special (Weyl) representation of the density matrix. It has been useful in describing quantum transport in quantum optics; nuclear physics; decoherence, quantum computing, and quant
The paper presents a methodology for the numerical design and optimization of a distortion-free two-dimensional Mach 2.5 nozzle based on a parametric model. The non-uniformities generated at the Mach wave reflections downstream of the nozzle throat t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9dbbfce662bce43fffcfe52c68ecb454
https://dspace.lib.cranfield.ac.uk/handle/1826/19288
https://dspace.lib.cranfield.ac.uk/handle/1826/19288
Publikováno v:
AIAA SCITECH 2023 Forum.
High levels of inlet flow distortion can be a critical aspect in supersonic air induction systems due to the complex spatial nature and notable temporal unsteadiness. This can affect the operability and performance of the propulsion system. Simulatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c135044fdb7f7d97f155f4ca87724779
https://doi.org/10.2514/6.2023-2356
https://doi.org/10.2514/6.2023-2356
Autor:
Ulrich Doll, Ralf Kapulla, Jonas Steinbock, Michael Dues, Matteo Migliorini, Pavlos K. Zachos
Publikováno v:
AIAA SCITECH 2023 Forum.
The expected close coupling between engine and fuselage of future aero-engine architectures will lead to highly distorted inflows at the engine face, presenting a major design risk for efficient and reliable engine operation. In particular, the incre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b10eaa6a6a434537ed98ed0c2d663fb
https://doi.org/10.2514/6.2023-1372
https://doi.org/10.2514/6.2023-1372
Characterization of unsteady distortion events for S-duct intakes under non-uniform inlet conditions
Publikováno v:
AIAA SCITECH 2023 Forum.
The use of convoluted intakes is expected to grow in novel aircraft configurations as designers seek to integrate more closely the propulsion system with the airframe. Previous research highlighted considerable unsteady flow distortions for S-duct co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d6c535f79015f88bb2ec5009d0cd25c
https://doi.org/10.2514/6.2023-0502
https://doi.org/10.2514/6.2023-0502
The ground vortex generated in front of an intake operating near the ground and subjected to crosswind is investigated using CFD and compared to the experiments. The flow field of a scale-model intake is numerically simulated with both steady and uns
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::305f1eb6f6cb5127949ae1fae8ea74e5
https://dspace.lib.cranfield.ac.uk/handle/1826/18895
https://dspace.lib.cranfield.ac.uk/handle/1826/18895
Convoluted aero-engine intakes are often required to enable closer integration between engine and airframe. Although the majority of previous research focused on the distortion of S-duct intakes with undistorted inlet conditions, there is a need to i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30ff15663fc1a47626e165c72c5b8f3e
https://dspace.lib.cranfield.ac.uk/handle/1826/17960
https://dspace.lib.cranfield.ac.uk/handle/1826/17960
Publikováno v:
Journal of Propulsion and Power. 36:346-356
For some embedded engine arrangements, the nature of the inlet distortion is influenced by the boundary layer characteristics at the inlet plane of the intake. This research presents the first quantitative assessment on the influence of inlet boundar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e799661cce679bf374a165ae5a1fea9b
https://doi.org/10.2514/1.b37554
https://doi.org/10.2514/1.b37554