An experimental study of the characteristics of the turbulent belt leeward of a wind turbine rotor was carried out in the "Joaquim Blessmann" wind tunnel of UFRGS. The turbine model was developed at the University of Caxias do Sul and represents a three-bladed aerogenerator characterized by a NACA 4412 aerodynamic profile. Measurements of velocity fluctuations were performed with a hot wire anemometer. The complexity of the turbulent flow is evaluated from the mean and floating velocity profiles. The influence of the incident flow turbulence and the process of recomposition of the flow are evaluated through measurements.