DMST Investigation of the Effect of Cambered Blade Curvature on Small H-Darrieus Rotor Performance

2019 ◽  
pp. 95-102
Author(s):  
Khaled Souaissa ◽  
Moncef Ghiss ◽  
Mouldi Chrigui ◽  
Hatem Bentaher ◽  
Aref Maalej
Keyword(s):  
Darrieus Rotor

Analysis of the performance of a H-Darrieus rotor under uncertainty using Polynomial Chaos Expansion

Energy ◽  
2016 ◽  
Vol 113 ◽  
pp. 399-412 ◽  
Author(s):  
László Daróczy ◽  
Gábor Janiga ◽  
Dominique Thévenin
Keyword(s):  
Polynomial Chaos ◽  
Polynomial Chaos Expansion ◽  
Chaos Expansion ◽  
Darrieus Rotor

Darrieus Rotor Aerodynamics

1982 ◽  
Vol 104 (2) ◽  
pp. 102-105 ◽  
Author(s):  
P. C. Klimas
Keyword(s):  
Rotor Aerodynamics ◽  
Darrieus Rotor

scholarly journals Hydroelectric power plants for small rivers

2021 ◽  
Vol 2131 (3) ◽  
pp. 032071
Author(s):  
A A Devyatkin ◽  
S V Titov ◽  
V V Konovalov
Keyword(s):  
Power Plants ◽  
Flow Simulation ◽  
Hydroelectric Power Plant ◽  
Flow Speed ◽  
Small Rivers ◽  
Hydroelectric Power ◽  
Incident Flow ◽  
Hydroelectric Power Plants ◽  
Darrieus Rotor ◽  
Negative Factors

Abstract Comparative analysis of methods of obtaining electricity from a renewable energy source is carried out. Various designs and op-tions for small hydroelectric power plants have been proposed. Positive and negative factors of structures under consideration and their impact on the environment are analyzed. The main characteristics of the flow (speed, head) for the choice of the optimal variant of hydroelectric power plant have been determined. Three variants of impellers for free-flow hydroelectric power plants are proposed with a comparison of the efficien-cy of each variant. An analysis was carried out and an impeller based on a Darrieus rotor was selected for further research. Simulation was performed in the Flow Simulation program. The initial data for the design of Darrieus rotor operating in a liquid were the diameter and width of the impeller. The calculations involved a rotor with straight and swirling blades. The swirling blades rotor is self-starting. In the course of the calcula-tion, the speed of the liquid flow approaching the rotor and the rotor speed were changed. As a result of cal-culation, the value of the positive moment for self-starting was determined, which occurs at an incident flow velocity of at least 1.3 m/s.

scholarly journals Design, Fabrication and Performance Evaluation of Hybrid Vertical Axis Wind Turbine

2020 ◽  
Vol 6 (6) ◽  
pp. 80-86
Author(s):  
Gwani Mohammed ◽  
Mamuda Buhari ◽  
Umar Muhammed Kangiwa ◽  
John Danyaro
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Vertical Axis ◽  
Substantial Improvement ◽  
Vertical Axis Wind Turbine ◽  
Experimental Conditions ◽  
Savonius Rotor ◽  
Darrieus Rotor ◽  
Low Efficiency ◽  
And Performance

Vertical axis wind turbines (VAWT) have attracted a lot of attention recently as an efficient tool in harnessing wind energy; however these types of wind turbine are faced with some challenges which affect their overall performance. The Darrieus rotor has difficulty to self-start by itself while the Savonius rotor has low efficiency. The performance of these turbines can be improved by combining the two VAWTs as one system. This paper presents the design of a hybrid VAWTs turbine. The Hybrid VAWTs combines the Darrieus rotor and the Savonius rotor as a single system to produce a high starting torque and enhanced efficiency. The Savonius rotor is placed at the centre of the three vertical blades of the Darrieus H-rotor to form the hybrid VAWTs. The hybrid VAWT was tested at four different wind speed i.e. V = 4.80 m/s, 4.50 m/s, 4.30 m/s and 3.90 m/s respectively. The performance of the hybrid VAWT was compared with the conventional straight bladed VAWT under similar experimental conditions. The obtained results showed that there is substantial improvement in the self-starting ability and coefficient of power (Cp). At V = 4.80 m/s, the Cp values for hybrid VAWT increased by 92% compared to straight bladed H-rotor VAWT. Similar improvement was also observed at wind speed of V = 4.50 m/s, 4.30 m/s, and 3.90 m/s where the Cp values increases by 71%, 10%, and 67% respectively compared to the straight bladed H-rotor.

scholarly journals Experimental Investigation on the Performance of Varying Thickness H-Darrieus Rotor

2019 ◽  
Vol 1172 ◽  
pp. 012082
Author(s):  
Hussain Mahamed Sahed Mostafa Mazarbhuiya ◽  
Agnimitra Biswas ◽  
Kaushal Kumar Sharma
Keyword(s):  
Experimental Investigation ◽  
Varying Thickness ◽  
Darrieus Rotor

Performance Study of Helical Darrieus Rotor

2021 ◽  
pp. 443-450
Author(s):  
Mabrouk Mosbahi ◽  
Mariem Lajnef ◽  
Mouna Derbel ◽  
Zied Driss
Keyword(s):  
Performance Study ◽  
Darrieus Rotor
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