Numerical Investigation of the Sensitivity of the Acoustic Power Level to Changes in Selected Design Parameters of an Axial Fan

Abstract

The noise generated by different types of fans used in the turbomachinery industry is a topic that has been studied for many years. However, researchers are still looking for a universal solution to reduce noise while maintaining the performance of these machines. This paper, as a contribution to the research, presents the results of numerical investigations of an axial fan installed in a pipeline with a circular cross-section. In particular, the focus was on investigating the sensitivity of the sound power level to changes in selected design and operational parameters of this fan. The simulation studies used the unsteady Reynolds-averaged Navier–Stokes (URANS) approach and the Ffowcs Williams–Hawkings (FW-H) analogy implemented in Ansys Fluent.

CFD analysis of a multi-rotor flying robot for air pollution inspection

“…On these surfaces, the pressure value was assumed to be zero with the reference value of 1 atm. For the modeling of turbulence, a standard k − ω SST model [14] was used and all calculations were performed for steady state.…”

Simulation of Rotor-Rotor Interaction and Noise of an Axial Counter-Rotating Fan

“…Fans with counter-rotation (CRF) become a promising solution due to higher aerodynamic performance and lesser energy consumption (Lynam and Hawes 1946;Roy et al 1992). However, the more stringent environmental regulations and comfort requirements have posed a permanent challenge to the designers and pushed researchers to concentrate more on understanding the complex flows in order to reduce the noise emission (Mistry and Pradeep 2013;Romik and Czajka 2022). Indeed, the low-noise design is almost a systematic clause in the specifications submitted to the manufacturers to stand out from the competition (Wu et al 2018).…”