On cup anemometer rotor aerodynamics

The influence of anemometer rotor shape parameters, such as the cups' front area or their center rotation radius on the anemometer's performance was analyzed. This analysis was based on calibrations performed on two different anemometers (one based on magnet system output signal, and the o...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2012-05, Vol.12 (5), p.6198-6217
Main Authors: Pindado, Santiago, Pérez, Javier, Avila-Sanchez, Sergio
Format: Article
Language:English
Subjects:
20th century
Aerodynamics
anemometer calibration
Anemometers
Calibration
Constants
cup aerodynamics
cup anemometer
Cups
Mathematical analysis
Optoelectronics
Rotor aerodynamics
Rotors
Sensors
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Summary:The influence of anemometer rotor shape parameters, such as the cups' front area or their center rotation radius on the anemometer's performance was analyzed. This analysis was based on calibrations performed on two different anemometers (one based on magnet system output signal, and the other one based on an opto-electronic system output signal), tested with 21 different rotors. The results were compared to the ones resulting from classical analytical models. The results clearly showed a linear dependency of both calibration constants, the slope and the offset, on the cups' center rotation radius, the influence of the front area of the cups also being observed. The analytical model of Kondo et al. was proved to be accurate if it is based on precise data related to the aerodynamic behavior of a rotor's cup.
ISSN:1424-8220
1424-8220
DOI:10.3390/s120506198