Perfil de pala de turbina eólica de eje vertical de diseño bioinspiradoestudio comparativo y optimización mdediante modelo CFD parametrizado

Abstract

With a view to improve the efficiency of a vertical axis wind turbine Savoniust type; in this document the use of bioinspired design blade profile relying on Fibonacci’s Spiral is proposed: a form presented repeatedly in nature. On this basis, a research study has been done about improving the efficiency of the turbine by means of successive comparative surveys, whereby geometric parameters that affect to efficiency were modified and optimal values were determined for each parameters. For that purpose research studies using 3D CFD and wind tunnel tests have been carried out. To improve the management of CFD, 3D model and study structure were parameterized thus achieving a reduction in manufacturing and computing times. With the aim of validate CFD model prediction several turbine models were printed in 3D and subsequently has been tested under the same conditions in a wind tunnel, confirming the superiority of the new geometry. The results obtained indicate that with the use of Fibonacci’s blade profile the turbine performance increases around a 15% versus semicircular blade profile.