Résumé:
the flow around seven shapes (circle, semi-circle, rectangle, triangle, flat plate and two airfoils) and a circle with slits has been investigated numerically (using OpenFOAM and fluent). The main purpose of this study is to show the effect of the geometer and slits respectively on the vortex detachment behind a smooth shape, and stationary using the finite element approach to solve the fluid governing equations system at Re = 20,100,200 and 1000 The variation of the contact surface, the geometer and the spacing ratio (D/S) of the slit is strongly influence both the various physical parameters and the vortex detachment behind a circle.
The second part in this study is to determine the drag coefficient for four shapes (circle ,semi-circle,flat plate and NACA0040) has been investigated numerically (using fluent) and compare the numerical results with the experimental one (wind tunnel) and we can talk about the electric power generation by the VIV phenomenon we get that their creation depends on the number of frequency and the amplitude of the vibration, which gave us the smooth circle with larger vibrations and larger amplitudes. There is no doubt that it is one of the new solutions in light of the exhaustion of non-renewable energies.
