title: Mathematical analysis of the effect of rotor geometry on cup anemometer response.
abstract: The calibration coefficients of two commercial anemometers equipped with different rotors were studied. The rotor cups had the same conical shape, while the size and distance to the rotation axis varied. The analysis was based on the 2-cup positions analytical model, derived using perturbation methods to include second-order effects such as pressure distribution along the rotating cups and friction. The comparison with the experimental data indicates a nonuniform distribution of aerodynamic forces on the rotating cups, with higher forces closer to the rotating axis. The 2-cup analytical model is proven to be accurate enough to study the effect of complex forces on cup anemometer performance.
authors.affiliation: Instituto Universitario de Microgravedad "Ignacio Da Riva" (IDR/UPM), Universidad Politécnica de Madrid, ETS de Ingeniería Aeronáutica y del Espacio, Plaza del Cardenal Cisneros 3, 28040 Madrid, Spain.
authors.forename: Ángel
authors.initials: Á
authors.lastname: Sanz-Andrés
authors.affiliation: Instituto Universitario de Microgravedad "Ignacio Da Riva" (IDR/UPM), Universidad Politécnica de Madrid, ETS de Ingeniería Aeronáutica y del Espacio, Plaza del Cardenal Cisneros 3, 28040 Madrid, Spain ; Departamento de Infraestructura, Sistemas Aeroespaciales y Aeropuertos, Universidad Politécnica de Madrid, ETS de Ingeniería Aeronáutica y del Espacio, Plaza del Cardenal Cisneros 3, 28040 Madrid, Spain.
authors.forename: Santiago
authors.identifier: 0000-0003-2073-8275
authors.initials: S
authors.lastname: Pindado
authors.affiliation: Instituto Universitario de Microgravedad "Ignacio Da Riva" (IDR/UPM), Universidad Politécnica de Madrid, ETS de Ingeniería Aeronáutica y del Espacio, Plaza del Cardenal Cisneros 3, 28040 Madrid, Spain.
authors.forename: Félix
authors.initials: F
authors.lastname: Sorribes-Palmer
mesh_terms: D000465:Algorithms; D008962:Models, Theoretical
references.citation: Sensors (Basel). 2012;12(5):6198-217
references.pmid: 22778638
references.citation: ScientificWorldJournal. 2013 Dec 04;2013:197325
references.pmid: 24381512