How to cite:
Valizadeh, R.; Abbaspour, M.; Taeibi Rahni, M.; Saffari Pour, M.; Hulme-Smith, C. Improved Wells Turbine Using a Concave Sectional Profile. Preprints2020, 2020100045. https://doi.org/10.20944/preprints202010.0045.v1
Valizadeh, R.; Abbaspour, M.; Taeibi Rahni, M.; Saffari Pour, M.; Hulme-Smith, C. Improved Wells Turbine Using a Concave Sectional Profile. Preprints 2020, 2020100045. https://doi.org/10.20944/preprints202010.0045.v1
Valizadeh, R.; Abbaspour, M.; Taeibi Rahni, M.; Saffari Pour, M.; Hulme-Smith, C. Improved Wells Turbine Using a Concave Sectional Profile. Preprints2020, 2020100045. https://doi.org/10.20944/preprints202010.0045.v1
APA Style
Valizadeh, R., Abbaspour, M., Taeibi Rahni, M., Saffari Pour, M., & Hulme-Smith, C. (2020). Improved Wells Turbine Using a Concave Sectional Profile. Preprints. https://doi.org/10.20944/preprints202010.0045.v1
Chicago/Turabian Style
Valizadeh, R., Mohsen Saffari Pour and Christopher Hulme-Smith. 2020 "Improved Wells Turbine Using a Concave Sectional Profile" Preprints. https://doi.org/10.20944/preprints202010.0045.v1
Abstract
The current need to develop sustainable power sources has led to the development of ocean-based conversion systems. Wells turbine is a widely used converter in such systems which suffers from a lack of operational range and power production capacity under operational conditions. The profile named IFS which is concave in the post-mid-chord region, can produce significantly larger lift forces and show better separation behavior than the NACA profiles. In the present study, we tested this profile for the first time in a Wells turbine. The performance of six different blade designs with IFS and NACA profiles were evaluated and compared using a validated computational fluid dynamic model. Although the substitution of the NACA profile with the IFS profile in all cases increased the torque generated, the most efficient power generation and the largest efficient range were achieved in the design with varying thickness from the hub with a 0.15 thickness ratio reaching to the ratio of 0.2 at the tip. The operational span of this design with the IFS profile was 24.1% greater and the maximum torque generation was 71% higher than the case with the NACA profile. Therefore, the use of the IFS profile is suggested for further study and practical trials.
Keywords
wells turbine; oscillating water column; wave energy converter; computational fluid dynamics
Subject
Engineering, Automotive Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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