Computational Fluid Dynamics modeling of Savonius type vertical axis water rotor: Assessment of meshing dimensions and comparison with experiments

Abstract In this paper, we are interested in studying the hydrodynamic behavior of the Savonius rotors installed in a water channel. We performed a comparison of four different numbers of nodes and cells. A Hexahedral type is used. The finite volume method was employed to solve the Unsteady Navier-Stokes equations governing the transport of momentum. The present numerical observations reasonably, describe the numerical simulation of a Savonius-type vertical axis water turbine. The comparison with experimental results obtained from literature presents a good agreement. Key word: Savonius rotor, CFD, RANS, URANS.