| Title: |
A Straight-Bladed Vertical-Axis Turbine for Wave Energy Conversion: Effect of Guide-Vane Geometry on Performance |
| Authors: |
Hayamizu, Y; Kitano, K; Suzuki, T; Morita, S; Ohtsuka, S; Takao, M; Kinoue, Y; Setoguchi, T |
| Source: |
Journal of Physics: Conference Series ; volume 1909, issue 1, page 012054 ; ISSN 1742-6588 1742-6596 |
| Publisher Information: |
IOP Publishing |
| Publication Year: |
2021 |
| Description: |
This study proposes a straight-bladed vertical-axis turbine for ocean-wave energy conversion. The aim is to develop a novel air turbine suitable for an oscillating water column in a wave energy plant. To this end, the performances of straight-bladed vertical-axis turbines were investigated for different guide-vane geometries in a wind tunnel experiment. The rotor has four straight blades with an NACA0018 profile, a chord length of 80.5 mm, a pitch diameter of 460 mm, and a blade width of 490 mm. In this study, the guide-vane geometry was varied as arc, semi-arc, and semi-arc with a straight part. Under steady flow conditions, the turbine performance was evaluated by determining the torque, input and flow coefficients, and the turbine efficiency. The semi-arc blade geometry decreased the input coefficient and increased the torque coefficient. Moreover, the semi-arc blade with a straight part improved the starting characteristics of the turbine and its efficiency over a wide range of flow coefficients. |
| Document Type: |
article in journal/newspaper |
| Language: |
unknown |
| DOI: |
10.1088/1742-6596/1909/1/012054 |
| DOI: |
10.1088/1742-6596/1909/1/012054/pdf |
| Availability: |
https://doi.org/10.1088/1742-6596/1909/1/012054; https://iopscience.iop.org/article/10.1088/1742-6596/1909/1/012054; https://iopscience.iop.org/article/10.1088/1742-6596/1909/1/012054/pdf |
| Rights: |
http://creativecommons.org/licenses/by/3.0/ ; https://iopscience.iop.org/info/page/text-and-data-mining |
| Accession Number: |
edsbas.54A7CF74 |
| Database: |
BASE |