Effect of blade installation angle on power efficiency of resistance type VAWT by CFD study

Abstract

Renewable energy is an inevitable choice to meet the demands of energy resource. In the 21st century, one of the serious problems facings us is the energy resources that restrict the social progress and sustainable development. Environmental pollution and fossil energy resources shortage force people to explore and use new energy resources. The aim of this paper is to study the effect of blade installation angle on power coefficient of a five-blade resistance type vertical axis wind turbine using

Performance enhancement of Savonius wind turbine by blade shape and twisted angle modifications

“…21 Twist angle / ¼ 45 is the optimal angle of twist where the power coefficient reached the maximum value. Using an equation to predict the optimal shape of Savonius ARC-Blade was performed 22 and the power coefficient is 10:98% higher than a classical Savonius turbine. Making a hole in the middle of blade turbine by a certain length was applied.…”

Understanding Unsteady Flow Physics of Two Types of Vertical Axis Wind Turbines with a Fluid-Structure Interaction Approach

“…Experiments have demonstrated that the wakes behind motor-driven and wind-driven wind turbines have similar vortical structures, as long as the rotational motion is similar [14]. As a matter of fact, several researchers have numerically studied wake structures by prescribing VAWTs' motion at a constant angular velocity [15,1]. However, for experimental studies, researchers usually prefer using VAWTs driven by wind [12].…”