Abstract
Performance of a cross-flow wind turbine located above windbreak and snow fences and the associated velocity fields have been investigated experimentally. Effects of the nonporous area of the fence, as well as the direction of the turbine rotation were examined. The standard porous board fence model had the geometric shielding rate of 60%. When the turbine was rotating clockwise, i.e. the blades on the upstream side of the turbine were moving upward, the maximum power coefficient increased with the increasing the nonporous area of the fence. In contrast, when the turbine was rotating counterclockwise and the small clearance between the turbine and the fence, the maximum power coefficient decreased rapidly with the increasing the nonporous area of the upper part of fence. It was found that the power of wind turbine was related to the flow velocity in the clearance region and the rotational direction of the wind turbine.
