Abstract
Measurements were made of U and V components of instantaneous velocity in the wake of vertical axis wind turbine model using X type hot-wire, focusing on the issue of change of wind environment around the model. We measured the distribution of the phase-averaged velocity in the wake flow in this experiment, moreover, examined some influences that the interference between the blades exerted on the flow field around the wind turbine. From these experimental data, the integral quantities of mean velocity in the wake flow, turbulent energy; momentum loss; were compared with three, four and five pieces of model- turbine blades. Results obtained, it is to show similar properties regardless of the number of blades.
