Performance Improvement of a Drag Hydrokinetic Turbine

Water

Mouna Derbel¹  Marco Sinagra²  Costanza Aricò²  Bouzid Mosbahi³  Mabrouk Mosbahi⁴  Mariem Lajnef⁴  Zied Driss⁴ 

[1] Advanced Materials Laboratory, National School of Engineers of Sfax (ENIS), University of Sfax, B.P. 1173, km 3.5 Soukra, Sfax 3038, Tunisia;Department of Civil, Environmental, Aerospace and Materials Engineering (DICAM), University of Palermo, Viale delle Scienze, 90128 Palermo, Italy;Higher Institute for Technological Studies of Sidi Bouzid, Sidi Bouzid 9100, Tunisia;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;

关键词: Savonius rotor;    kinetic turbines;    water flow deflector;    CFD analysis;   

DOI  :  10.3390/w13030273

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown