Three dimensional simulation of J-shaped Darrieus vertical axis wind turbine

The present research aims to investigate the concept of J-shaped blade in a straight–bladed Darrieus type VAWT in terms of output torque and power by employing high-fidelity 3D numerical simulations. Theoretically, since the J-shaped blades can benefit from the lift and drag forces simultaneously, t...

Full description

Saved in:
Bibliographic Details
Published in:Energy (Oxford) 2016-12, Vol.116, p.1243-1255
Main Authors: Zamani, Mahdi, Nazari, Saeed, Moshizi, Sajad A., Maghrebi, Mohammad Javad
Format: Article
Language:English
Subjects:
3D simulations
Darrieus vertical axis wind turbine
J-shaped blade
Self-starting ability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The present research aims to investigate the concept of J-shaped blade in a straight–bladed Darrieus type VAWT in terms of output torque and power by employing high-fidelity 3D numerical simulations. Theoretically, since the J-shaped blades can benefit from the lift and drag forces simultaneously, this combined forces help the turbine possess faster operation at low wind speeds, thereby resulting in the termination of self-starting problem and improving power coefficients, especially at low and moderate tip speed ratios. In this study, NACA0015 is served as the base airfoil and has been modified to generate the desired J-shape profile. The attained results indicate improvements on torque and power coefficients, more specifically in the first half of revolution namely 0° 
ISSN:0360-5442
DOI:10.1016/j.energy.2016.10.031