eng Science and Education Publishing American Journal of Energy Research 2014-10-09 2 4 90 98 10.12691/ajer-2-4-3 AJER2014243 article Slah Driss 1 Zied Driss zied.driss@enis.rnu.tn 1 Imen Kallel Kammoun 1 Laboratory of Electro-Mechanic Systems (LASEM), National School of Engineers of Sfax (ENIS), Univrsity of Sfax, TUNISIA In this paper, we are interested in the impact of shape of obstacle roof on the turbulent flow in a wind tunnel. Particularly,arched, inclined, pitched and flat roofs obstacles are examined. A three-dimensional flow of a fluid is numerically analyzed using the Navier-Stokes equations in conjunction with the standard k-ε turbulence model. These equations were solved by a finite-volume discretization method. The comparison between our numerical and experimental results shows a good agreement and confirms the numerical method. http://pubs.sciepub.com/ajer/2/4/3/ajer-2-4-3.pdf modeling turbulent flow roof shape obstacle wind tunnel