oscillating wind turbine
Unsteady thrust on an oscillating wind turbine: Comparison of …
DOI: 10.1016/J.JFLUIDSTRUCTS.2020.103141 Corpus ID: 224857132; Unsteady thrust on an oscillating wind turbine: Comparison of blade-element momentum theory with actuator-line CFD @article{Apsley2020UnsteadyTO, title={Unsteady thrust on an oscillating wind turbine: Comparison of blade-element momentum theory with actuator …
Modeling of an Oscillating Water Column on the Floating Foundation ...
This paper summarizes the theory behind the modeling that was performed to incorporate an oscillating-water-column type Wave energy Converter (WEC) into the WindFloat hull. The WindFloat is a floating structure supporting a very large (>5MW) wind turbine. By adding a WEC to the structure, the overall economic cost of the project …
Unsteady thrust on an oscillating wind turbine ...
This requires hydrodynamic modelling, and an essential input is the mean and oscillating force due to the wind turbine. The mean thrust will cause a mean pitch on the platform (Fig. 1b), whilst turbine oscillation will provide aerodynamic damping. Various levels of aerodynamic model have been developed for wind and tidal turbines (Sørensen, …
Experimental investigation of a pitch-oscillating wind turbine airfoil ...
The effects of vortex generators (VGs) on the aerodynamic performance of a typical wind turbine airfoil, namely, DU91-W2-250, are measured under the background that VGs are gradually and widely installed for energy improvement. The experiment is carried out in a wind tunnel at the Reynolds number of 3 × 10 5 . The oscillation of the …
Dynamic Modeling and Investigation of a Tunable Vortex Bladeless Wind ...
This paper investigates the dynamics of an electromagnetic vortex bladeless wind turbine (VBWT) with a tunable mechanism. The tunable mechanism comprises a progressive-rate spring that is attached to an oscillating magnet inside an electromagnetic coil. The spring stiffness is progressively adjusted as the wind speed …
Design Improvement of the Small-Scale Vortex-Induced Bladeless Wind ...
Optimal design and performance improvement of the bladeless wind turbine has been the subject of researches in recent years. Although the idea of using VIV for harvesting energy has been considered by researchers for many years and many articles have been presented in this field (Goswami et al. 1993; Zhang et al. 2017, 2018; Cao et …
Numerical studies on dynamic stall characteristics of a wind turbine ...
The impact of turbulence intensity and atmospheric stability on power deficits due to wind turbine wakes at Horns Rev wind farm, Wind Energy, 15 (1) (2012) ... S. Wang et al., Numerical investigations on dynamic stall of low Reynolds number flow around oscillating airfoils, Computers & Fluids, 39 (9) (2010) 1529–1541.
A Hybrid Power Generation Platform Combining Floating Wind Turbine …
Therefore, integrating offshore wind turbine with wave energy conversion devices could be a good idea to achieve higher efficiency and lower cost. In this paper, we report a combined wind and wave energy power generation concept called WindOWC, which constits of a 5MW wind turbine and three oscillating-water-column (OWC) wave …
Conceptual Design and Initial Analysis of an Oscillating Wind Turbine ...
Bladeless wind turbines have been introduced as a possible candidate for future wind energy plants. Generally, rotating wind turbines occupy a large working space, while they can absorb only a small share of the wind energy. The motion of big machinery in such large working areas results in maintenance difficulties, more costs, and more risk for natural …
Modeling of oscillating wind turbine | Journal of Machinery …
The operating capacity of wind turbines of a new type is considered in which autorotation of the wind-receiving surface is replaced by oscillations of small amplitudes. It is shown that an oscillating wind turbine in its utilization of wind power falls between a three-blade Savonius rotor and a Darye rotor. The advantage of oscillating …
A coupled numerical framework for hybrid floating offshore wind turbine ...
Integrating floating offshore wind turbines with oscillating-water-column wave energy converters has been seen as a promising solution for hybrid offshore renewable energy production, as the cost-effective wave energy devices could possibly help increase the overall power absorption, reduce platform dynamic responses, and mitigate …
Wobbling in the wind: a bladeless alternative to turbines
Conventional wind turbines have shown that wind is an excellent source of renewable energy. However, some of its characteristics mean traditional turbines are not suitable for every application and venue. ... Vortex''s designs resemble slender wobbling or oscillating cylinders. The devices have few moving parts, require minimal maintenance ...
Good vibrations: wind induced resonance and turbines oscillations
The wind speed that start the resonance is called the critical speed. If the wind blow at the critical speed for enough time the amplitude of the vibration will increase and you will see the tower oscillating. This is a simplistic summary of a very complex phenomenon. It is however a limiting factor for the use of higher steel tower.
Conceptual Design and Initial Analysis of an Oscillating Wind Turbine ...
The initial design of an oscillating wind turbine is presented and the system aerodynamics is modeled in Comsol, to investigate the potentials of the proposed design. Bladeless wind turbines have been introduced as a possible candidate for future wind energy plants. Generally, rotating wind turbines occupy a large working space, …
Hydrodynamic investigation on an OWC wave energy
Multi-functional platform is a promising way to enhance the economic power production from multiple renewable energy sources. This paper investigates numerically and experimentally the hydrodynamic performance of an oscillating water column (OWC) wave energy converter (WEC), integrated into a monopile-mounted …
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