Numerical analysis of vortex break down and turbulent model change on Aerodynamic behavior of Delta wing

Delta wing is studied numerically for vortex break down in different turbulent model. It is modeled with the geometry used in elder references and a high quality mesh is applied on it. The aim of this article is to study Aerodynamic coefficients for different states of the delta wing and also to study the charts of these coefficients in vortex break down mode and different turbulent model mode. The method of this study is numerical. Aerodynamic coefficient captured in this study is compared with elder studies. The results show that by increasing the angle of attack up to 35 degrees, the vortices on the wing breakdown and the performance is worsened and the turbulent model kw shows Aerodynamic behavior better than others. The innovation of this article is that vortex break down is studied in 35 degrees angle of attack and the other innovation is that, 3 vortex models is applied and considered kw is the best.