Science and Education Publishing American Journal of Mechanical Engineering 2328-4110 3 3A 2015 07 13 Computer Simulation of the Aerodynamic Structure of an Arched Roof Obstacle and Validation with Anterior Results 9 14 EN Slah Driss Zied Driss Laboratory of Electro-Mechanic Systems (LASEM), National School of Engineers of Sfax (ENIS), University of Sfax (US), B.P. 1173, Road Soukra km 3.5, 3038 Sfax, TUNISIA Imen Kallel Kammoun AJME201533A2 10.12691/ajme-3-3A-2 2015 05 20 2015 06 22 2015 07 13 The present paper is dedicated to the numerical simulation of the aerodynamic structure of an arched roof obstacle with a height h=63 mm and a length L2=118 mm. The governing equations of mass and momentum in conjunction with the standard k-ε turbulence model are solved using the software "Solid Works Flow Simulation". A finite volume discretization is used. The numerical results are validated with anterior results developed in a wind tunnel. The numerical simulations agreed reasonably with the experimental results and the numerical model was validated.