<div class="page" title="Page 1"><div class="layoutArea"><div class="column"><p><span>El presente artículo, muestra algunas de las ventajas que tiene en una encuesta la utilización de preguntas abiertas, preguntas que debido a la complejidad de su análisis, son utilizadas con poca frecuencia, o cuando se utilizan, simplemente se dejan como parte en el cuestionario pero no se analizan las respuestas a este tipo de preguntas. Técnicas estadísticas como el análisis de datos textuales, desarrolladas inicialmente por Ludovic Lebart, son presentadas en este artículo como una alternativa a los métodos tradicionales de análisis de grandes masas de datos de tipo textual como la poscodificación y como una motivación al estudio de técnicas y software que permitan analizar datos de tipo textual. </span></p></div></div></div>
Vortex generators are devices that modify the wind behavior near the surface of wind turbine blades. Their use allows the boundary layer shedding transition zone to be varied. Bio-inspired design has been used to improve the efficiency of aerodynamic and hydrodynamic systems by creating devices that use shapes present in animals and plants. In this work, an experimental methodology is proposed to study the effect of bio-inspired vortex generators and their effect on the structural vibration of a blade. In addition, the wind wake generated by the blade with oscillating vortex generators at different oscillation frequencies is analyzed by means of a hot wire anemometer, obtaining appreciable vibration reduction results in the measured 3D acceleration signals for wind velocities between 10 and 15 m/s. Values of the spectral components of the wake velocity measured at higher tunnel wind velocities increase. Spectral variance is reduced at higher tunnel wind velocities. The system analyzed in this paper can contribute in the future to the construction of actuators for vibration compensation systems in wind turbines.
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