Wind is an important renewable source which has a large potential all around the world. Recently, wind energy has been quite popular and owns a growing market in Turkey. This expansion brings more investigation around the country, to specify the most suitable sites for wind development. In this study, a CFD (Computational Fluid Dynamics) software for wind resource assessment, called Meteodyn, is used to make an assessment in the west of Turkey. Meteodyn uses Navier-Stokes equations while making the calculations. This study is focused on the wind mapping of a particular region called Kocatepe, Manisa. The reference meteorological data is supplied from a met mast 65 meters height, measured for one year time period. The wind characteristics of the site is investigated by using the meteorological wind data from wind sensors at 30m and 50m levels of the measurement mast, and the software calculates the wind parameters of the selected site. Therefore the appropriate locations for installation of the wind turbines will be selected.