Zobrazeno 1 - 10
of 10
pro vyhledávání: '"André R. R. Silva"'
Publikováno v:
Engineering Proceedings, Vol 56, Iss 1, p 193 (2023)
Unsteady airfoils play a pivotal role in comprehending diverse aerospace applications, being one of those flapping propulsions. The present paper studies this topic by bringing back an old unsteady panel method to juxtapose its results against CFD da
Externí odkaz:
https://doaj.org/article/e7beb4e84a31488889eceb90b5b4feab
Publikováno v:
Engineering Proceedings, Vol 56, Iss 1, p 219 (2023)
One of the major tasks of aerodynamics is the study of the flow around airfoils. While most conventional methods deal well with steady flows, unsteady airfoils, like the ones on helicopter blades, are subject to such complex dynamic flows that their
Externí odkaz:
https://doaj.org/article/c27d594da4224ca4811eb21e8c8194e0
Autor:
João P. Castanheira, Nicole G. Dias, Rui Melicio, Paulo Gordo, André R. R. Silva, Roger M. Pereira
Publikováno v:
Applied Sciences, Vol 13, Iss 23, p 12547 (2023)
Heat switches are devices for controlling heat flow in various applications, such as electronic devices, cryogenic cooling systems, spacecraft, and rockets. These devices require non-linear transient thermal simulations, in which there is a lack of i
Externí odkaz:
https://doaj.org/article/f8bf8d9eef9a40b8a99d8e08c3233179
Publikováno v:
Engineering Proceedings, Vol 56, Iss 1, p 81 (2023)
Air bubble curtains have been applied to a wide range of situations, from the attenuation of underwater noise, debris control, and containment of suspended sediment to the reduction in saltwater intrusion. This work conducts a preliminary numerical s
Externí odkaz:
https://doaj.org/article/f6c0cca99d8443cb8a793bcdf80192b4
Publikováno v:
Fuels, Vol 3, Iss 2, Pp 184-206 (2022)
The expansion of the research on nanoscale particles demonstrates several advantages in terms of stability and an increased surface area to volume ratio compared to micron-sized particles. Based on this, the present work explores the addition of alum
Externí odkaz:
https://doaj.org/article/c45971cec81540069696061c84f27ed3
Publikováno v:
Aerospace, Vol 10, Iss 7, p 615 (2023)
Flapping wing dynamics are of great interest in many research areas, such as bioinspired systems and aircraft aeroelasticity. The findings of the present study provide significant insight into the importance of the leading-edge dynamic incidence on t
Externí odkaz:
https://doaj.org/article/ae8f85a818024a25a8f4f1fd80d4d985
Publikováno v:
Aerospace, Vol 10, Iss 2, p 114 (2023)
Supercritical nitrogen jet behavior is modeled using an incompressible but variable density approach developed for variable density jets. Following mechanical and thermal breakup concepts, several injection conditions relevant to liquid rocket propul
Externí odkaz:
https://doaj.org/article/df5f57a4b6f944959907a67e701f3077
Publikováno v:
Universe, Vol 8, Iss 5, p 279 (2022)
Asteroid impacts are a proven global threat, meaning that any location on Earth might be a subject to their consequences. Such collisions are not likely in any person’s lifetime, but their aftermath could be catastrophic. As Earth’s surface is mo
Externí odkaz:
https://doaj.org/article/3542cfa84c43406a8aa9457d9b6fe9c2
Publikováno v:
Aerospace, Vol 8, Iss 8, p 216 (2021)
Natural flight has consistently been the wellspring of many creative minds, yet recreating the propulsive systems of natural flyers is quite hard and challenging. Regarding propulsive systems design, biomimetics offers a wide variety of solutions tha
Externí odkaz:
https://doaj.org/article/ca45ff8ac75a47c69b2910cf36df1a2e
Publikováno v:
Applied Sciences, Vol 10, Iss 19, p 6698 (2020)
In aero-engines, the introduction of biofuels is among the best alternatives to fossil fuels, and this change is likely to affect the impact of droplets on interposed surfaces. Under this framework, this work reviews the main morphological hydrodynam
Externí odkaz:
https://doaj.org/article/24872c71d4c04341887c7914007b0f2c