Journal ArticleDOI
Aerodynamic performance enhancements of H-rotor Darrieus wind turbine
Islam Hashem,Mohamed H. Mohamed +1 more
TLDR
In this paper, the performance of three wind-lens configurations with different diffuser types is investigated (i.e., flat-panel, curved-surface, and cycloidal-surface).About:
This article is published in Energy.The article was published on 2018-01-01. It has received 116 citations till now. The article focuses on the topics: Darrieus wind turbine & Turbine.read more
Citations
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Journal ArticleDOI
Towards optimal aerodynamic design of vertical axis wind turbines: Impact of solidity and number of blades
TL;DR: In this article, the impact of solidity and number of blades on the aerodynamic performance of 2-, 3-and 4-bladed Darrieus H-type vertical axis wind turbines was analyzed.
Journal ArticleDOI
Winglet design for vertical axis wind turbines based on a design of experiment and CFD approach
Tiantian Zhang,Tiantian Zhang,Mohamed M. Elsakka,Mohamed M. Elsakka,Wei Huang,Zhenguo Wang,Derek B. Ingham,Lin Ma,Mohamed Pourkashanian +8 more
TL;DR: In this paper, the aerodynamic effect of adding a winglet on the blade of a VAWT was studied, and it was shown that the optimal winglet can decrease the tip vortices and improve the blade's power performance by up to 31% at a tip speed ratio of 2.29.
Journal ArticleDOI
Review on the technical perspectives and commercial viability of vertical axis wind turbines
TL;DR: A comprehensive comparison was performed between VAWTs and HAWTs focused in different sections on their aerodynamic performance, efficiency, power density in a wind farm, and self-starting ability.
Journal ArticleDOI
Experimental and numerical investigation of twin vertical axis wind turbines with a deflector
TL;DR: In this paper, the authors report on the design and testing of a novel vertical axis wind turbine (VAWT) system consisting of two counter-rotating VAWT rotors and a deflector that is placed between the two rotors.
Journal ArticleDOI
Aerodynamic and aeroacoustic performance assessment of H-rotor darrieus VAWT equipped with wind-lens technology
TL;DR: In this article, the aerodynamic and aero-acoustic characteristics of H-rotor Darrieus vertical axis wind turbine combined with a promising energy conversion technology, namely wind-lens, employing computational approaches.
References
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Journal ArticleDOI
A new k-ϵ eddy viscosity model for high reynolds number turbulent flows
TL;DR: In this article, a new k -ϵ eddy viscosity model, which consists of a new model dissipation rate equation and a new realizable eddy viscous formulation, is proposed.
A New K-epsilon Eddy Viscosity Model for High Reynolds Number Turbulent Flows: Model Development and Validation
TL;DR: In this article, a new k-epsilon eddy viscosity model, which consists of a new model dissipation rate equation and a new realizable eddy viscous formulation, is proposed.
Book
Wind turbines : fundamentals, technologies, application, economics
TL;DR: In this article, the basic concepts of wind energy converters are discussed and the physical principles of wind Energy conversion are discussed, as well as the physical and structural properties of wind turbines.
Journal ArticleDOI
The Darrieus wind turbine: Proposal for a new performance prediction model based on CFD
TL;DR: In this article, a CFD model for the evaluation of energy performance and aerodynamic forces acting on a straight-bladed vertical-axis Darrieus wind turbine is presented. But the model is not suitable for the application of wind turbines to the power grid.
Journal ArticleDOI
Performance investigation of H-rotor Darrieus turbine with new airfoil shapes
TL;DR: In this article, the performance of the straight Darrieus turbine (H-rotor) was investigated for 20 different airfoils (Symmetric and Non-symmetric) by two-dimensional Computational Fluid Dynamics in order to maximize output torque coefficient and output power coefficient (efficiency).