Daniele Ragni

Time-domain impedance boundary condition for computational aeroacoustics applications

Anastasia Marketou, Frits de Prenter, Daniele Ragni, Damiano Casalino

Linear Stability Analysis of Wall-Bounded Flows Across Anisotropic Porous Media

Thomas Hunter, Nguyen Anh Khoa Doan, Francesco Avallone, Daniele Ragni

A simplified model to study the physical mechanisms leading to tonal noise in noise-reducing trailing edges comprises communicating channels through a porous medium. The impact of material properties and flow conditions on the onset of communication is investigated through a linear stability …

nl, gb, it (code pays fourni par la source)

Aeroacoustic analysis of tip-joined blade propeller

Kangni Combey, Omer A. Elsayed, Lourenço Tércio Lima Pereira, Daniele Ragni et autres

Metamaterials and Fluid Flows

Francesco Avallone, Federico Bosia, Yi Chen, Giada Colombo et autres

Understanding and controlling the dynamic interactions between fluid flows and solid materials and structures-a field known as fluid-structure interaction-is central not only to established disciplines such as aerospace and naval engineering, but also to emerging technologies such as energy harvesting, soft robotics, …

it, de, gb, us, kr, fr, nl (code pays fourni par la source)

Metamaterials and Fluid Flows

Francesco Avallone, Federico Bosia, Giada Colombo, Richard V. Craster et autres

Understanding and controlling the dynamic interactions between fluid flows and solid materials and structures-a field known as fluid-structure interaction-is central not only to established disciplines such as aerospace and naval engineering, but also to emerging technologies such as energy harvesting, soft robotics, …

it, de, gb, us, kr, fr, nl (code pays fourni par la source)

Modelling vortex generator effects on turbulent boundary layers with integral boundary layer equations

Abhratej Sahoo, Akshay Koodly Ravishankara, Wei Yu, Daniele Ragni et autres

Vortex generators (VGs) are known to delay separation and stall, allowing the design of airfoils with larger stall margins, particularly for thick airfoil sections in the inboard and midboard regions of modern slender wind turbine blades. Including VG effects in blade design …

nl (code pays fourni par la source)

Aerodynamic and aeroacoustic interactions in multirotor aircraft for urban air mobility: A review

Kangni Combey, Omer Elsayed, Andrea Magrini, Federico N. Ramírez et autres

The rapid growth of urbanization and increasing road traffic congestion are straining ground transportation infrastructure for both conventional and emergency purposes, driving the need for alternative mobility solutions. urban air mobility (UAM) offers a promising pathway by deploying electric vertical takeoff and …

Maroc, it, es, nl (code pays fourni par la source)

Measurement of dynamic permeability in grazing flows for porous trailing edges

Daniele Ragni, Elias Arcondoulis, Daniele Fiscaletti

Abstract Porous trailing edges attenuate hydrodynamic pressure fluctuations that scatter as trailing-edge noise, with their effectiveness governed by their material parameters. Conventional measurements of permeability rely on steady-flow rigs, which cannot capture the dynamic response of this parameter, which is relevant for …

nl, gb (code pays fourni par la source)

Measurement of dynamic permeability in grazing flows for porous trailing edges – CORRIGENDUM

Daniele Ragni, Elias Arcondoulis, Daniele Fiscaletti

Time-domain impedance boundary condition for computational aeroacoustics applications

Anastasia Marketou, Frits de Prenter, Daniele Ragni, Damiano Casalino

nl (code pays fourni par la source)

Characterization of Communicating Turbulent Grazing Flows Through a Resolved Porous Medium

Thomas Hunter, Francesco Avallone, Nguyen Anh Khoa Doan, Daniele Ragni

nl, it (code pays fourni par la source)

Turbulence-distortion modelling for Amiet’s theory enhancement

Andrea Piccolo, Riccardo Zamponi, Francesco Avallone, Daniele Ragni

When applied to aerofoils with non-negligible thickness, Amiet’s theory for turbulence-interaction noise prediction does not account for the alterations in the velocity field and acoustic response induced by the surface, resulting in an overestimation of the radiated noise. This study proposes a …

nl, be, it (code pays fourni par la source)