Numerical Study Through CFD of the Behavior of a Centrifugal Fan for Dust Extraction Systems

This article is presented with the objective of performing the design and numerical study of a centrifugal fan with backward curved blades, whose rodete has 16 blades, which have an input angle \(\beta _1 = 29 ^{\circ }\) and an output angle of \(\beta _2 = 65 ^{\circ } \) , this was determined using Euler equation theoretical concepts for centrifugal flow machines, to achieve a capacity of 230 \(\text {m}^3/\text {s}\) of air at the volute output, with an input speed requirement of 18 m/s, getting a pressure drop of 10.3 kPa, while the impeller runs on a motor of 3560 revolutions per minute. To perform the analysis, a solid model and a simulation using computational fluid dynamics (CFD) are designed with ANSYS Fluid Flow (Fluent) by the K-épsilon turbulence model, obtaining an efficiency of 70% with a flow output speed of 10–13 m/s and 80–90 kPa respectively.