Análise da influência do ângulo construtivo no desempenho de um ventilador axial

Abstract

Flow machines are mechanical devices used for converting mechanical energy into hydraulic energy and vice versa. To develop the analysis of these devices, several simplified mathematical models are used, however, the finite volume method have helped to design these devices, as well as to visualize the fluid flow and understand the losses generated by this movement. The main objective of this article is to evaluate the performance of a two-blade axial fan, through design parameters influenced by the rotor inlet and outlet angle. The purpose of the study is to make two approaches: the analytical model developed by Euler's Equation and the numerical simulation based on the finite volume method using the Ansys Fluent software, Student version. The results obtained are essential characteristics, mainly to determine the application of a flow machine: hydraulic power, head, flow and yield curve. These parameters are adapted to variations in the rotor input and output constructive angle and subjected to different rotation variations. In this work, it was possible to verify the constructive angle of 40ᵒ as the best among the others, as it generally meets all the parameters better.