M.Sc. Tezi Görüntüleme

      In the present study; it has been numerically studied that the effects of injection and suction through porous surfaces of rectangular cylinder, having various B/H ratios, on the flow around the cylinder. The k- turbulence model with Kato-Launder modification which depends on unsteady Reynolds averaged Navier-Stokes (URANS) equations has been used. The standard boundary conditions, which were given in the literature, have been regarded while the modified wall functions which include the injection and suction effects have been used on the porous surfaces. The finite volume method and staggered mesh structure have been used in numerical approach. The results showed that, periodic vortex motion in the wake and drag coefficient of the cylinder have been influenced by the B/H ratio. It also has been obtained that injection or suction through porous surfaces influences the vortex motion and drag coefficient.