Redchyts' D. Numerical simulation of vertical-axis wind turbines rotors aerodynamics on the base of unsteady Navier-Stokes equations

Motion of incompressible liquid around of Darrieus and Savonius rotors. Research of structure and definition of primary parameters of a unsteady flow of vertical-axis wind turbines Darrieus and Savonius rotors on the basis of a coupled numerical solution of incompressible viscous liquid and a rigid body equations. Mathematical simulation and numerical methods are used for investigation of VAWT rotors aerodynamics in this work. Mathematical model for coupled simulation of aerodynamic and dynamic processes of vertical-axis wind turbines rotors is developed on the base of Reynolds averaged Navier-Stokes equations for incompressible fluid and equation of a rigid rotation concerning a fixed axis. Advantage of SALSA turbulence model as contrasted to by models SA and SARC is shown at calculation of developed two-dimensional unsteady separation flows. Two types of Darrieus and Savonius rotors differing in number of blades and their geometrical parameters are computed. Effect of Reynolds number, solidity and power coefficients on rotor power characteristics is revealed.