dc.contributor.advisor | Teigen Giljarhus, Knut Erik | |
dc.contributor.author | Shariatpanahi, Ghazal sadat | |
dc.date.accessioned | 2021-09-29T16:27:19Z | |
dc.date.available | 2021-09-29T16:27:19Z | |
dc.date.issued | 2021 | |
dc.identifier | no.uis:inspera:78873759:58250873 | |
dc.identifier.uri | https://hdl.handle.net/11250/2786194 | |
dc.description.abstract | A tidal turbine design needs to consider the harsh environment of the sea. Reducing the number of moving parts is therefore desirable. A tidal stream is relatively predictable with small directional variance. To avoid a yaw gear an attractive option is to instead use a reversible airfoil, allowing the turbine to operate in both ebb and tide. This work investigates various reversible airfoil designs and airfoil optimization. The airfoils are based on existing NACA 6 profiles and profiles using B-spline parameterization. The optimization process showed that it is challenging to obtain a profile that has both good lift and good aerodynamic effectiveness as these two parameters are opposing each other. Still, a viable design is obtained that has improved performance compared to the simpler design based on modifying a NACA 6 profile. | |
dc.description.abstract | | |
dc.language | eng | |
dc.publisher | uis | |
dc.title | Optimization of Airfoil Shape for aBidirectional Tidal Stream Turbine | |
dc.type | Master thesis | |