The aim of this study is to analyze and optimize a vertical axis Savonius-type wind turbine using Computational Fluid Dynamics (CFD). The study is developed in two parts. In the
first part of the study, an analysis of the main design parameters
is made using semi-empirical models. The second part of the study is focused on the CFD simulations using Ansys CFX. First of all, steady state simulations have been made in order to ensure a reliable model to predict the Savonius behavior. After steady state, transient state simulations have been calculated to obtain not only the Coefficient of Power (Cp) curves but also the setting time at different wind speeds and using different materials. The transient state simulations have been
implemented using a subroutine that calculates the torque
produced by the turbine in each time step. Finally, Using the steady state simulations it has been possible to study the
interaction of 4 Savonius situated in a row for different angular positions of each turbine.
Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016.