Optimum power generation assessment in an H-Darrieus vertical axis wind turbine via Exergy Destruction Minimization

Silva-Llanca, Luis; Inostroza-Lagos, Sebastián

doi:10.1016/j.enconman.2021.114312

Cited by 12 publications

(1 citation statement)

References 36 publications

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“…The coarse and fine grids were computed similarly, only altering the number of elements on the edges as follows: for the coarse one, the number of elements was decreased by 20%, whereas for the fine one, it was increased by the same amount. The presented approach towards mesh generation was successfully implemented for other studies in the field, as was the independence mesh study managed in [21], for which the mesh topology was specifically based on prior work associated with the authors of the current research, as mentioned in the cited paper.…”

Section: Numerical Simulationmentioning

confidence: 99%

Numerical Evaluation of the Flow around a New Vertical Axis Wind Turbine Concept

Mălăel¹,

Bucur²

2021

Sustainability

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In order to develop a sustainable economy based on the efficient use of green energy resources, it is necessary to research and innovate systems such as wind turbines. In this paper, a new configuration for vertical axis wind turbines was proposed and numerically analyzed using CFD methods. The concept is based on solving the starting problem of lift-based vertical axis wind turbines. The new concept consists of three blades with different chords, arranged at different radii so that the interaction between the blades is reduced and the operation in the vortex wake is minimal, thus reducing the losses. Through comparing a classic case of an H-Darrieus wind turbine with the new concept, not only were satisfying results regarding the blade-to-blade interaction presented, but an increased efficiency of up to 10% was also observed. Among the presented results is the variation of the vorticity magnitude at different positions of the blades, thus, the concept’s blade-to-blade interaction is reduced. Conclusions drawn after the investigation are in favor of the proposed geometry and the concept should be pursued further.

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Section: Numerical Simulationmentioning

confidence: 99%