@ARTICLE{10.21494/ISTE.OP.2019.0357, TITLE={Study of the flow three-dimensional and instationary in a rotor of the Savonius wind turbine}, AUTHOR={Francis Raveloson, Delphin Tomboravo, Roger Vony, }, JOURNAL={Thermodynamics of Interfaces and Fluid Mechanics}, VOLUME={3}, NUMBER={Issue 1}, YEAR={2019}, URL={https://openscience.fr/Study-of-the-flow-three-dimensional-and-instationary-in-a-rotor-of-the-Savonius}, DOI={10.21494/ISTE.OP.2019.0357}, ISSN={2514-4642}, ABSTRACT={The purpose of this study is to develop a computational code for solving the equations governing the flow of fluids in a vertical axis wind turbine. In order to check the effectiveness of our code, we made an application on the Savonius rotor. The equations that define the flow of fluids in a rotating wheel are that of continuity, Navier-Stokes and energy. These equations are solved numerically by the explicit Lax-Wendroff finite difference method followed by the addition of a time-corrected artificial viscosity. The precision in the space and in the time of our scheme is second order and the stability of the numerical computation is ensured by the CFL condition which imposes a constrain on the time step. The results are presented by pressure and Mach curves.}}