Fourth International Conference On Advances in Civil, Structural and Mechanical Engineering -ACSM 2016
Author(s) : ALI KARGAR , MAJID LOTFI
In this research, numerical analysis of corners of square cylinder on following parameters of the turbulence and changing pressure and drag coefficient in air flow has been discussed. Selected models were made of Plexiglas that side length is 15mm and high of this is 400mm. To investigate effect of different corners on following parameters of square cylinder, these cylinders with sharp, rounded and beveled corners are used. Amount of bevel and radius of rounded edges are selected 25.5mm. Type of grid (mesh) around each square is structured and for other parts of solution range, unstructured mesh was used. The result of this research, shows angle of attack and figure of corners of cylinder, causes significant changes in turbulence parameters of square cylinder and value of drag coefficient. Rounding and bevel corners of square cylinder, decrease mean (average) and maximum turbulence in the wakes of cylinder. Drag coefficient by rounding and beveling corners of square cylinder with sharp edges can be considerably reduced.