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2D Hydrodynamic Blade Analysis of Tidal Darrieus Turbine


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DOI: https://doi.org/10.15866/ireme.v12i2.14264

Abstract


The present paper addresses the two-dimensional hydrodynamic blade analysis of vertical axis Darrieus H type tidal turbine with the aim of maximizing the performance and improving power extraction compared to air. Despite the lower peak efficiency compared to other types of turbine, Darrieus turbine support to different flow directions, high low speed torque and generally smaller volume make it a very compelling option for efficiency evaluation utilizing underwater currents. The process starts with the turbine, consisted of NACA 4 series foils, and surrounding area design and optimization followed by the domain analysis using a refined structured mesh which occurs from skewness and division number analysis. Furthermore, two dimensional simulations take place regarding difference in power extraction between water and air, turbine efficiency between two to four blade designs, foil camber and thickness analysis with the aim of choosing the foil with the maximum efficiency which is ultimately observed at the NACA 0012 two (2) blade design turbine.
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Keywords


Darrieus H Type; Foil Blade Analysis; Tidal Turbine

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References


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