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The Scientific World Journal
Volume 2013, Article ID 197325, 11 pages
http://dx.doi.org/10.1155/2013/197325
Research Article

Aerodynamic Analysis of Cup Anemometers Performance: The Stationary Harmonic Response

Universidad Politécnica de Madrid, ETSI Aeronáuticos, Instituto Universitario de Microgravedad “Ignacio Da Riva” (IDR/UPM), Plaza del Cardenal Cisneros 3, 28040 Madrid, Spain

Received 29 July 2013; Accepted 10 September 2013

Academic Editors: D. Missirlis and G. Pascazio

Copyright © 2013 Santiago Pindado et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The effect of cup anemometer shape parameters, such as the cups’ shape, their size, and their center rotation radius, was experimentally analyzed. This analysis was based on both the calibration constants of the transfer function and the most important harmonic term of the rotor’s movement, which due to the cup anemometer design is the third one. This harmonic analysis represents a new approach to study cup anemometer performances. The results clearly showed a good correlation between the average rotational speed of the anemometer’s rotor and the mentioned third harmonic term of its movement.