The present work considers an experimental investigation of wind turbine near wake by using Particle Image Velocimetry (PIV) visualization technique. The PIV technique gives a complete picture of all points at the domain under consideration. The study is focused on the effect of tip speed ratio () and Reynolds number (Rec) on the near wake characteristics. A three-blade model of wind turbine with airfoil SG 6040 16% is tested in water channel at Rec range between 1.28 ×104 and 7.68 ×104. Various tip speed ratios are tested between =2 and =12. Experiments are also performed at constant =8 and variable Rec in the range between 2.56 ×104 and 5.12 ×104.