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Article

Performance Improvement of a Drag Hydrokinetic Turbine

1
Laboratory of Electro-Mechanic Systems (LASEM), National School of Engineers of Sfax (ENIS), University of Sfax, B.P. 1173, km 3.5 Soukra, Sfax 3038, Tunisia
2
Higher National Engineering School of Tunis (ENSIT), University of Tunis, Avenue Taha Hussein Montfleury, Tunis 1008, Tunisia
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Advanced Materials Laboratory, National School of Engineers of Sfax (ENIS), University of Sfax, B.P. 1173, km 3.5 Soukra, Sfax 3038, Tunisia
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Higher Institute for Technological Studies of Sidi Bouzid, Sidi Bouzid 9100, Tunisia
5
Department of Civil, Environmental, Aerospace and Materials Engineering (DICAM), University of Palermo, Viale delle Scienze, 90128 Palermo, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Majid Mohammadian
Water 2021, 13(3), 273; https://doi.org/10.3390/w13030273
Received: 11 January 2021 / Revised: 19 January 2021 / Accepted: 21 January 2021 / Published: 23 January 2021
(This article belongs to the Special Issue Hydraulic Dynamic Calculation and Simulation)
Hydropower is at present in many locations, among all the other possible renewable energy sources, the best one for net cost per unit power. In contrast to traditional installation, based on water storage in artificial basins, free flow river turbines also provide a very low environmental impact due to their negligible effect on solid transport. Among them, kinetic turbines with vertical axis are very inexpensive and have almost zero impact on fish and local fauna. In application to tidal waves and sea waves, where vertically averaged velocities have alternate direction, a Savonius rotor also has the advantage of being productive during the whole time cycle. In this work, the effect of an upstream deflector system mounted upstream of a twisted Savonius rotor inside a channel has been investigated through numerical simulations and experimental tests. Numerical simulations were carried on using the ANSYS FLUENT 17.0 software. Based on this numerical study, it is shown that the proposed deflector system has improved the power coefficient of the Savonius rotor by 14%. The utilization of this new design system is predicted to contribute towards a more efficient use of flows in rivers and channels for electricity production in rural areas. View Full-Text
Keywords: Savonius rotor; kinetic turbines; water flow deflector; CFD analysis Savonius rotor; kinetic turbines; water flow deflector; CFD analysis
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MDPI and ACS Style

Mosbahi, M.; Lajnef, M.; Derbel, M.; Mosbahi, B.; Aricò, C.; Sinagra, M.; Driss, Z. Performance Improvement of a Drag Hydrokinetic Turbine. Water 2021, 13, 273. https://doi.org/10.3390/w13030273

AMA Style

Mosbahi M, Lajnef M, Derbel M, Mosbahi B, Aricò C, Sinagra M, Driss Z. Performance Improvement of a Drag Hydrokinetic Turbine. Water. 2021; 13(3):273. https://doi.org/10.3390/w13030273

Chicago/Turabian Style

Mosbahi, Mabrouk, Mariem Lajnef, Mouna Derbel, Bouzid Mosbahi, Costanza Aricò, Marco Sinagra, and Zied Driss. 2021. "Performance Improvement of a Drag Hydrokinetic Turbine" Water 13, no. 3: 273. https://doi.org/10.3390/w13030273

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