Obtenção do coeficiente de descarga do tubo venturi da bancada de mecânica dos fluidos MF 1000 por meio de transdutor de pressão e uma comparação com os dados do fabricante

Abstract

Flow measurement is crucial in industries and services, as it has a direct impact on process control and manufacturing. Around 40% of industrial meters use the pressure difference principle in industrial measurements, of which the Venturi meter is a part. The device is based on the continuity equation and Bernoulli's equation and was designed by Clemens Herschel. The Venturi meter experiment demonstrates the main principles of the conservation of mass and energy equation, as well as detailing the process of converting pressure measurements into velocity. A teaching bench available in the Thermal Sciences and Fluids laboratory was used for the experiment. Automated data collection speeds up the process and makes the system less susceptible to error, since the signal is read directly and systemically. In order to obtain the curves of a Venturi tube from the bench in an automated way, a measurement system was implemented using a pressure transducer in conjunction with an Arduino microcontroller. The data from the meter was obtained and compared with the manufacturer's data in order to validate the experiment. The meter's discharge coefficient behaved in accordance with the literature and the automation proved to be adequate. Learning through theory and practice, especially through experimentation, is a way of establishing solid and lasting knowledge, which in turn fosters genuinely meaningful learning in the area under study.