Abstract
The flow around a rotor blades of a wind turbines is usually governed by unsteady phenomena such as stall, separation bubble, turbulent transition and hysterisis due to the unsteady flow field and low Reynolds number effect. In order to simulate these phenomena, accurate numerical schemes are required. The purpose of this study is to apply an advanced technology of computational fluid dynamics to the performance prediction of a wind turbine rotor with higher accuracy. This paper describes the initial approach of the three-dimensional flow analysis around a horizontal axis wind turbine using pseudo-compressibility method combined with overset grid method. The study presents a three-dimensional flow analysis around horizontal axis wind turbines which are a small one for investigation at the design condition and off-design conditions. These numerical results provide some confidence in the availability of this CFD algorithm to predict wind turbine flow fields.
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