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Start-up characteristics are important performance of Vertical Axis Wind Turbines (VAWTs). Traditional measurement approach for average start-up torque (AST) has disadvantage of multiple measurements and the results are easy affected by measurement environment. A simplified measurement approach for average start-up torque of VAWTs is proposed. One measurement position is firstly predicted by Computational...
Wind energy is a clean and renewable energy resource and has been paid more and more attention by scholars around the world. As a drag-drive n type Vertical Axis Wind Turbine (VAWT), traditional Savonius wind rotor has disadvantage of low wind energy utilization but has a lot of the advantages compare d with Horizontal Axis Wind Turbines (HAWTs) and lift-driven VAWTs. A fish-ridged wind rotor is proposed...
H-type vertical axis wind turbine (VAWT), with higher wind energy utilization, is one of the most common forms of Darrieus-type vertical axis wind turbine. A simplified mathematical modeling analysis is proposed to obtain the performance of H-type VAWT in this research. Blade element momentum theory is used to calculation the power and efficiency of H-type VAWT, and computational fluid dynamics (CFD)...
Three-hastate vertical axis wind wheel (THVAWW), with higher wind energy utilization, is a new wind power installation. An airflow-collecting cavity is introduced to improve the efficiency of the wheel further based on the invention patent technology of THVAWW. Computational fluid dynamics (CFD) theories and some modeling tools such as Solid works, ICEM and Fluent are used to grasp the dynamic flow-field...
Three-hastate vertical axis wind wheel, a novel type rotor with high efficiency, can be able to actualize wind energy conversion by the lumen twice driven principle, based on the theoretical analysis of the rotor's geometric structure in this research. The computational fluid dynamic analyses, which detect the aerodynamic characteristic of the rotor further, are also described by using the multiple...
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