An alternative mathematical model of vane anemometers based on the balance of power |
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| Affiliation: | 1. The University of Queensland, School of Civil Engineering, Brisbane QLD 4072, Australia;1. Laboratório de Traçadores, COPPE, Federal University of Rio de Janeiro, Centro de Tecnologia, Bloco I sala 104D, Cidade Universitária, 21941-914 Rio de Janeiro, Brazil;2. Departamento de Eletrônica, Federal University of Rio de Janeiro, Cidade Universitária, 21945-970, Rio de Janeiro, Brazil;1. Department of Engineering Mechanics, College of Aerospace Engineering, Chongqing University, Chongqing 400044, PR China;2. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China;3. State Key Laboratory of Crystal Material, Shandong University, Jinan 250100, PR China;4. Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan;5. New Industry Creation Hatchery Center, Tohoku University, Sendai 980-8579, Japan;1. Technology & Food Unit, Institute for Agricultural and Fisheries Research (ILVO), B. Van Gansberghelaan 115, 9820 Merelbeke, Belgium;2. Department of Biosystems Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium;1. School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China;2. Tsinghua University, Beijing 100084, PR China |
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| Abstract: | Anemometers based on the exchange of momentum between the flow and rotating measuring element comprise an important class of instruments used in flow metrology, especially in meteorological and ventilation measurements. In these instruments, overvaluation of the measured average velocity, caused by the inertia of their rotors, takes place. To analyse this phenomenon and the dynamics of the measurement process, as well as to estimate and minimize the measurement uncertainty, it is required to be acquainted with the mathematical model of the anemometer. In this study, the model of the vane anemometer based on the equation of motion of its rotor available in the literature is analysed, and a new model based on the power balance is proposed. Model testing and a comparison of both models has also been performed. |
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| Keywords: | Vane anemometer Mathematical model Dynamic states Model testing |
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