Automação da bancada de mecânica dos fluidos para obtenção da curva característica da bomba

Abstract

The Characteristic Curves of the Pumps are diagrams that represent the influence of the variables that make up their operation, the main one being the relationship between the rate of fluid flow and dynamic head. Such curves are commonly constructed in laboratory tests using hydraulic benches. However, manually measuring these variables can be a complex, costly and often inaccurate process. The automation of measurement of fluid dynamic variables allows the collection of data in real time and direct reading in data storage and treatment systems, making the process of analyzing results more agile and efficient. In order to obtain the characteristic curve of the installation and the pump, by measuring the pressure, pressure transducers were installed at specific points, using an Arduino microcontroller as a data acquisition and treatment system. Pressure data were compared with those measured on analog manometers, which have good accuracy, and with the manufacturer's results, validating the data obtained. The comparisons were satisfactory, showing a small deviation. In this way, it is possible to state that the implementation of an autonomous measurement system on the bench was successful.