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Aspect ratio influence on the vortex induced vibrations of a pivoted finite height cylinder at low Reynolds number
(2023-08-10)
Article
Open AccessThe effect of the aspect ratio on the vortex induced vibrations (VIV) of a pivoted finite length circular cylinder is investigated. A fixed value of the Reynolds number Re = 100 with four values of the aspect ratio ... -
Hybrid computation of the aerodynamic noise radiated by the wake of a subsonic cylinder
(Multidisciplinary Digital Publishing Institute (MDPI), 2023-08-21)
Article
Open AccessThe noise radiated by the flow around a cylinder in the subcritical regime at 𝑅𝑒𝐷=1×104 and at a subsonic Mach number of 𝑀=0.5 is here studied. The aerodynamic sound radiated by a cylinder has been studied with a ... -
Assessing the usability of two declarative programming languages to model geometric events
(American Institute of Aeronautics and Astronautics (AIAA), 2023-04-24)
Article
Open AccessWhen space missions plan scientific actions for robotic spacecraft to execute, they frequently do so within a geometric context called an opportunity. Although there are geometric software libraries that let users write ... -
Visual analysis of the impact of periodic wakes on the pressure side of a turbine blade
(2023-06-01)
Article
Open AccessTurbines are core components in jet engines for flight propulsion, power plants, and other important energy conversion processes. They are composed of successive rows of blades so that wakes of upstream blades reach ... -
An assessment of different relay network topologies to improve Earth-Mars communications
(2023-04)
Article
Open AccessThe future of deep space communications encompasses a challenging situation where the current facilities used to communicate with different spacecraft may become saturated as a result of an increasing number of missions ... -
Towards a quantitative understanding of Robert's Rising Thermal Bubble as a benchmark for 3D atmospheric codes
(American Meteorological Society, 2023-02-01)
Article
Open AccessRobert’s rising thermal bubble (RRTB) is a benchmark case used to assess atmospheric models. In this paper, RRTB is further studied both using an analytical and a numerical approach, improving to a greater extent the ... -
Deep reinforcement learning for flow control exploits different physics for increasing Reynolds number regimes
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-12-02)
Article
Open AccessThe increase in emissions associated with aviation requires deeper research into novel sensing and flow-control strategies to obtain improved aerodynamic performances. In this context, data-driven methods are suitable for ... -
Numerical investigation of forced convection heat transfer from a sphere at low Prandtl numbers
(2023-02)
Article
Open AccessDirect numerical simulations of the flow and forced convective heat transfer around a sphere at Reynolds numbers between 𝑅𝑒 = 500 and 𝑅𝑒 = 1000 are performed. We investigate the effects of the Prandtl number (𝑃 𝑟) ... -
Strategic similarities between earth observation small satellite constellations in very low earth orbit and low-cost carriers by means of strategy canvas
(2022-10)
Article
Open AccessThe space industry is growing and space data are becoming accessible to businesses that were previously unthinkable. Constellations of small satellites in Very Low Earth Orbit (VLEO) have created a gap that is allowing ... -
Business roadmap for the European Union in the NewSpace ecosystem: a case study for access to space
(2022-10)
Article
Open AccessA business roadmap is a high-level strategic management tool that maps the actions to develop new industries. It serves as a guide to plan and forecast technological, market and product developments in a more operational ... -
On the wake dynamics of an oscillating cylinder via proper orthogonal decomposition
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-09-02)
Article
Open AccessThe coherent structures and wake dynamics of a two-degree-of-freedom vibrating cylinder with a low mass ratio at Re=5300 are investigated by means of proper orthogonal decomposition (POD) of a numerical database generated ... -
Design of an intake and a thruster for an atmosphere-breathing electric propulsion system
(2022-10)
Article
Open AccessChallenging space missions include those at very low altitudes, where the atmosphere is the source of aerodynamic drag on the spacecraft, that fnally defnes the mission’s lifetime, unless a way to compensate for it is ...
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