A renewed interest on Vertical Axis Wind Turbines (VAWTs) arose from their ability to be effectively integrated within urban contests in the spirit of distributed generation. In order to improve their performance, a deeper comprehension of their fluid dynamic behavior is necessary. In the last years, at Politecnico di Bari a great effort has been addressed toward the numerical and experimental investigation of both lift- and drag-driven VAWTs. In particular, constant temperature hot wire anemometry (CTA) is used for the evaluation of the unsteady flow field downstream the VAWT prototypes tested in the subsonic closed-loop wind tunnel of the Politecnico di Bari, whilst, torque measurements are obtained directly from the servo amplifier monitor. Furthermore, by means of CFD analysis, a deep insight into the complex fluid-dynamics of the VAWTs has been obtained. All the acquired experience ended in the development of an innovative lift-driven VAWT prototype currently under investigation
Vertical axis wind turbines for distributed power generation / Torresi, Marco; Fortunato, Bernardo; Camporeale, Sergio Mario; Dambrosio, Lorenzo. - C2:(2014), pp. 75-79. (Intervento presentato al convegno 1st Workshop on the State of the Art and Challenges of Research Efforts of POLIBA tenutosi a Bari nel 3-5 Dicembre 2014).
Vertical axis wind turbines for distributed power generation
TORRESI, Marco;FORTUNATO, Bernardo;CAMPOREALE, Sergio Mario;DAMBROSIO, Lorenzo
2014-01-01
Abstract
A renewed interest on Vertical Axis Wind Turbines (VAWTs) arose from their ability to be effectively integrated within urban contests in the spirit of distributed generation. In order to improve their performance, a deeper comprehension of their fluid dynamic behavior is necessary. In the last years, at Politecnico di Bari a great effort has been addressed toward the numerical and experimental investigation of both lift- and drag-driven VAWTs. In particular, constant temperature hot wire anemometry (CTA) is used for the evaluation of the unsteady flow field downstream the VAWT prototypes tested in the subsonic closed-loop wind tunnel of the Politecnico di Bari, whilst, torque measurements are obtained directly from the servo amplifier monitor. Furthermore, by means of CFD analysis, a deep insight into the complex fluid-dynamics of the VAWTs has been obtained. All the acquired experience ended in the development of an innovative lift-driven VAWT prototype currently under investigationI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
