Predesign and Aerodynamic Efficiency Evaluation of a VAWT adapted to Romania Wind Conditions

In the context of modern development, the energetic situation of the planet is approached differently, based on the objective that one fifth of the total waste of energy is wanted to come from renewable resources. The current paper presents the development of a 1.5kW vertical axis wind turbine (VAWT), adapted to the wind conditions that are specific to Romania. In order to achieve this, a 2D numerical simulation with computational grid generated by using the blocking method included in the ANSYS ICEM CFD software was carried out. Regarding the efficiency analysis, the CFD methods were employed. Test cases were realized in unsteady two dimensional simulation and so was determined the efficiency of 43% for a 3 m/s wind speed and an efficiency of 49% when the wind speed reaches 11 m/s.