A5064462913- Wind Energy Research and Development
- Fluid Dynamics and Vibration Analysis
- Wind and Air Flow Studies
- Turbomachinery Performance and Optimization
- Aerospace Engineering and Energy Systems
- Cavitation Phenomena in Pumps
- Wind Turbine Control Systems
- Underwater Vehicles and Communication Systems
- Icing and De-icing Technologies
- Wave and Wind Energy Systems
- Fluid Dynamics and Turbulent Flows
- Biomimetic flight and propulsion mechanisms
University of Edinburgh
2022-2024
University of Southampton
2021-2023
Universidade Federal de Uberlândia
2023
The wake of an isolated model-scale wind turbine is analysed in a set inflow conditions having freestream turbulence intensity between 3 % and 12 %, integral time scales the range 0.1 to 10 times convective timescale based on diameter. It observed that generated by evolves more rapidly, with onset evolution being closer turbine, for high low scale flows, accordance literature, while flows at higher result slow evolution, akin low-turbulence despite highly-turbulent ambient condition. delayed...
The wakes of two different porous disks have been evaluated experimentally. Such are commonly used as physical actuator disk analogs for wind turbines. One is made a uniform wire mesh, while the other has nonuniform design with radial spars connected by rings. same solidity and produce approximately drag. also compared to wake model turbine solid disk. In contrast earlier studies, far wake, up 30 diameters downstream, included in comparison. near velocity deficit turbulence intensity...
Mitigating the impact of variable inflow conditions is critical for a wide range engineering systems such as drones or wind and tidal turbines. Passive control are increasing interest their inherent reliability, but mathematical framework to aid design currently lacking. To this end, in paper two-dimensional rigid foil that passively pitches response changes flow velocity considered. Both an analytical quasi-steady model dynamic low-order developed investigate pivot point position maximizes...
Free-stream turbulence characteristics play an important role in the mechanisms of power harvesting for wind turbines. Acquisitions and thrust from a model turbine diameter 0.18 m have been carried out tunnel wide range turbulent base flows, with varying free-stream intensity between 3% 16% integral timescale spanning 0.1 to 10 times rotation period. The results demonstrate that is significantly affected by both inflow scales its intensity, while scarcely turbulence. Fluctuations generated...
Tidal currents are renewable and predictable energy sources that could prove fundamental to decrease dependency from fossil fuels. currents, however, highly unsteady non uniform, resulting in undesirable load fluctuations on the blades drive train of turbines. A passive morphing blade concept capable reduce without affecting mean loads has recently been formulated demonstrated with numerical simulations (Pisetta et al., 2022). In this paper, we present first demonstration concept, through...
This paper presents the first blind prediction stage of Tidal Turbine Benchmarking Project being conducted and funded by UK's EPSRC Supergen ORE Hub. In this stage, only steady flow conditions, at low elevated turbulence (3.1%) levels, were considered. Prior to a large laboratory scale experiment was in which highly instrumented 1.6m diameter tidal rotor towed through towing tank well-defined conditions with without an upstream grid. Details test campaign design released as part community...
Tidal currents are renewable and predictable energy sources that could prove fundamental to the transition a sustainable use of resources. Over tidal period, changes in flow speed channel require blade pitch is adjusted maximise power extraction. This currently achieved with active actuation, which however increases capital maintenance cost turbine. Furthermore, because turbulence stream, turbine yaw, wave-induced currents, etc., blades experience high-frequency velocity fluctuations result...
We compute the loads on a model-scale tidal turbine with Blade Element Momentum (BEM) theory and Computational Fluid Dynamics (CFD) simulations, we compare results towing tank tests. CFD simulations are wall-resolved, steady, Reynolds-averaged Navier-Stokes k − ω SST turbulence model, where only 120◦ wedge domain single blade is resolved in non-inertial frame of reference. undertake detailed uncertainty analysis to identify sources error. BEM computed Monte-Carlo approach based differences...
Abstract Analytical wake models describe the main statistics using a reduced number of parameters: for instance, Gaussian model relies on single parameter k ∗ to predict mean velocity. However, robustness these different inflows has been seldom tested and effects ambient turbulence coefficients are reported only in limited studies. With this objective, we measured generated by model-scale wind turbine operating tunnel at Re D ⋍ 10 5 under conditions, with intensities between 3% 12% integral...
Tidal currents are renewable and predictable energy sources that could prove fundamental to decrease dependency from fossil fuels. currents, however, highly unsteady non uniform, resulting in undesirable load fluctuations on the blades drive train of turbines. A passive morphing blade concept capable reduce without affecting mean loads has recently been formulated demonstrated with numerical simulations (Pisetta et al., 2022). In this paper, we present first demonstration concept, through...
The wake of an isolated model-scale wind turbine is analysed in a set inflow conditions having freestream turbulence intensity between 3 % and 12 %, integral time scales the range 0.1 to 10 times convective timescale based on diameter. It observed that generated by evolves more rapidly, with onset evolution being closer turbine, for high low scale flows, accordance literature, while flows at higher result slow evolution, akin low-turbulence despite highly-turbulent ambient condition. delayed...