1028 Measurement on Three-Dimensional Flow on Horizontal Axis Wind Turbine Blade by using LDV

Abstract

The surface flow on rotor blade of Horizontal Axis Wind Turbine (HAWT) has complicated three-dimensional flow with span-wise velocity. Details of flow around rotor blades are not clarified sufficiently, since the measurement of velocity including boundary layer on rotor blades are difficult to reveal precisely. This paper's aim is to clarify the flow field around wind turbine blades. As the method, the measurement was performed on a model wind turbine having three blades by using of Laser Doppler Velocimeter (LDV)in wind tunnel. This paper showed effect that the parallel and radial velocity gives to the flow field around wind turbine blades by comparing some velocity profiles.