eng Science and Education Publishing American Journal of Mechanical Engineering 2328-4110 2015-07-14 3 3A 27 31 10.12691/ajme-3-3A-5 AJME201533A5 article D. Lalmi Eldjemoui@gmail.com 1 R. Hadef 2 Faculty of exact sciences, natural sciences and life, Larbi Ben Mhidi University, Oeb Algeria Faculty of sciences and applid sciences, Larbi Ben Mhidi university, Oeb Algeria This numerical study evaluates the performances of the statistical method of Reynolds realized (RANS) in the numerical simulation of a confined swirling turbulent flow. The confrontation of the computation results with real measurements confirmed the insufficiency of this approach. This handicap is related to the complexity of the structure of the flow (non stationary, three-dimensional, various scales of turbulence.....) revealed by hybrid approach DDES k-ω _SST. http://pubs.sciepub.com/ajme/3/3A/5/ajme-3-3A-5.pdf Swirl turbulence simulation RANS