A5004629163- Fluid Dynamics and Turbulent Flows
- Icing and De-icing Technologies
- Aerodynamics and Acoustics in Jet Flows
- Wind Energy Research and Development
- Fluid Dynamics and Vibration Analysis
- Radioactivity and Radon Measurements
- Wind and Air Flow Studies
- Aerodynamics and Fluid Dynamics Research
- Cryospheric studies and observations
- Geochemistry and Geologic Mapping
- Air Traffic Management and Optimization
- Smart Materials for Construction
- Soil Geostatistics and Mapping
- Acoustic Wave Phenomena Research
- Aerospace Engineering and Energy Systems
- Biomimetic flight and propulsion mechanisms
- Advanced Aircraft Design and Technologies
- Noise Effects and Management
- Aviation Industry Analysis and Trends
- Radiation Detection and Scintillator Technologies
- Turbomachinery Performance and Optimization
- Plasma and Flow Control in Aerodynamics
- Advanced Multi-Objective Optimization Algorithms
- Heat Transfer Mechanisms
- Arctic and Antarctic ice dynamics
Austrian Institute of Technology
2014-2024
University of Pisa
2024
Delft University of Technology
2023
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro
2011-2015
Istituto Nazionale di Fisica Nucleare
2011-2013
University of Udine
2009-2012
Icing is a strong limitation for the performance of wind turbines in cold climates and prediction loss due to ice accretion essential designing effective mitigation measures. This paper presents numerical approach capable simulating transient phenomenon its effects on turbine performance. applied NREL 5 MW reference predict (i) during after an icing event lasting 8 h (ii) potential improvement energy harnessing different operational strategies. The results show that by decreasing rotational...
ABSTRACT A 2D vortex panel model with a viscous boundary layer formulation has been developed for the numerical simulation of vertical axis wind turbine (VAWT), including operation in dynamic stall. The uses ‘double wake’ concept to reproduce main features unsteady separated flow, formation and shedding strong vortical structures wake–blade interaction. potential flow equations are solved together integral by using semi‐inverse iterative algorithm. new criterion reattachment during...
We present the first detailed map of terrestrial natural radioactivity Veneto Region (Italy), a 18,264 km2 densely populated area, previously investigated through indoor radon surveys. The activity concentration in 709 representative samples main Alpine lithostratigraphic units was measured by using high-purity germanium (HPGe) γ-ray spectrometer to characterize content 41 cartographic Lithostratigraphic at 1:250,000 scale. An area accounting for 61% territory, comprising alluvial plains...
We present a detailed map of the uranium distribution and its uncertainties in Variscan Basement Northeastern Sardinia (VBNS) at scale 1:100,000. An area 2100 km2 was investigated by means 535 data points obtained from laboratory situ gamma-ray spectrometry measurements. These volume corresponds to highest sampling density European Variscides, aimed studying genetic processes upper crust potentially triggered an enrichment radiogenic heat-producing elements. For first time Kriging with...
Abstract Purpose This paper presents an analysis of short-term (2025) scenarios for noise emission from civil air traffic in airport areas. Methods Flight movements and levels at a given are predicted using web-data-informed methodology based on the ECAC Doc.29 model. methodology, developed by authors previous work, relies collection processing web data to reconstruct flight events be fed into Three new elements have been included: i) topographic information digital elevation models, ii)...
In this paper, we report an extensive survey of the natural radioactive content rocks Tuscany Region (Italy): permitted first total radioactivity map region. The sampling was planned using geological at scale 1:250,000, which contains 45 distinct groups recognized by tectonic and stratigraphic features. Each group characterized for activity measuring concentrations 40K, 238U 232Th in 865 samples a high-purity germanium (HPGe) gamma-ray spectrometer. average areal distribution is...
Abstract Dynamic stall is a relevant phenomenon in the design and operation of vertical axis wind turbine (VAWT) as it impacts loading, control wake dynamics. Although streamtube models single‐wake vortex are commonly used for VAWT simulation, they either do not explicitly simulate distribution vorticity (streamtube models) or simplify into release point (single‐wake models). This can lead to inaccurate predictions dynamics, therefore induction field, rotor loading development, including...
Multi-megawatt Vertical Axis Wind Turbines (VAWTs) have inherent design and operational advantages that make them relevant for floating offshore applications. Many VAWT concepts use stall power regulation. Stall regulation imposes several constrains in the aerodynamic, structural generator design. Due to azimuthally varying unsteady aerodynamics experienced by a VAWT, designing an airfoil is still significant challenge. In this work, family of airfoils regulated defined through numerical...
The southern Apuan Alps (Italy) are prone to rainfall-induced landslides. A first attempt calculate rainfall thresholds was made in 2006 using non-statistical and repeatable methods for the 1975–2002 period. This research aims update, validate, compare results of that through different statistical approaches. Furthermore, a new dataset landslides from 2008 2016 collected analyzed by reconstructing events via an automatic procedure. To obtain terms duration–intensity relationship, we applied...
This work presents the methodology and results of numerical design a thermoelectric ice protection system (IPS) for rotor blade Leonardo Next Generation Civil Tiltrotor. The IPS architecture is made up two systems: primary secondary one (backup). consists parting strip in outer half blade, extending from 3% chord on suction side to 4% pressure side, coupled with eight de-icing zones extended chordwise until 24.5% 14.5 (depending zone). same configuration, reduced four regions, till 10% 13%...
Abstract Tonal airborne noise of aerofoils appears in a limited range moderate Reynolds numbers and angles attack. In these specific conditions, the aerofoil is characterised by large region laminar flow over aerodynamic surface, typically resulting two-dimensional instabilities boundary layer, generating one or more acoustic tones. The numerical simulation such phenomenon requires, beside an accurate prediction unsteady field, proper modelling to turbulent transition which generally imposes...
Abstract Vortex generators (VGs) have been widely applied to wind turbines thanks their potential increase aerodynamic performance. Due the complex inflow perceived by a rotor and proneness flow separation, VGs on usually experience highly unsteady flow. While there are models that exist simulate steady effects of VGs, we lack fast efficient tool model performance airfoils equipped with VGs. This paper adopts an double‐wake panel viscous–inviscid interaction developed vertical axis turbine...
This paper presents an improved Reynolds-averaged Navier–Stokes (RANS)-informed model for the fast prediction of interaction noise from contrarotating open rotors, which accounts effects front rotor tip vortices. A new semi-analytical three-dimensional vortex flow, calibrated using data extracted a RANS mixing plane simulation, is coupled with existing RANS-informed viscous wake and potential flow perturbations. provides more general accurate procedure reconstruction velocity perturbations...
The computation of turbomachinery airborne noise requires highly accurate numerical approaches to deal with the complexity phenomena involved, such as turbulence and laminar-to-turbulent transition. objective this paper is assess prediction capability an innovative LES technique, Zonal LES, coupled Ffowcs Williams-Hawkings (FWH) acoustic analogy, in simulating broadband low speed axial fans. Two different formulations (the Wall Adapting Local Eddy-viscosity Modeled LES) domain configurations...
This article addresses two modelling aspects of wind turbine aerofoil aerodyna-mics based on the solution Reynolds-averaged Navier—Stokes (RANS) equations. One these is effect an a priori method for structured grid adaptation aimed at improving wake resolution. The presented results emphasize that proposed strategy greatly improves resolution in far field, whereas completely diffused by non-adapted with same number and spacing patterns nodes. approach can be easily included generation...