Wind tunnel tests have been performed of individual and paired H-type Darrieus vertical-axis wind turbines. The turbines in the paired configuration are closely spaced, at 1.2 and 1.3 rotor diameters shaft to shaft, and are counter-rotating. Two …
Compared to horizontal-axis wind turbines (HAWTs), vertical-axis wind turbines (VAWTs) exhibit a different behaviour when built in tight arrays. In this research we build a model based on a free vortex model and empirical wake models, which are the …
Vertical axis wind turbines have experienced a renewed impulse during the last few years, with important research efforts focused on them. This work is focused in the development of new blade designs capable of notably reduce their manufacturing cost …