Effect of sweep on axial fan noise sources using the Lattice Boltzmann Method

Ghodake, Dipali, Sanjosé, Marlène, Moreau, Stéphane et Henner, Manuel. 2022. « Effect of sweep on axial fan noise sources using the Lattice Boltzmann Method ». International Journal of Turbomachinery, Propulsion and Power, vol. 7, nº 4.
Compte des citations dans Scopus : 1.

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Abstract

The effect of blade sweep has been studied numerically with the Lattice Boltzmann Method on a family of low-speed free-vortex axial fans with sweeps of ±45°. Good overall aerodynamic agreement is first demonstrated on all fans at the design condition, particularly in the tip gap. The local larger wall-pressure fluctuations seen in the unswept and backward swept fans compared to the forward case are traced to the stronger tip vortices that remain in the rotational plane or even move upstream. These stronger and faster vortices interacting with the fan blades are then responsible for the larger noise levels observed in the acoustic spectra of these fans, and particularly for large subharmonic humps. Excellent agreement between experimental and numerical noise predictions is finally reported stressing the dominant tip noise.

Item Type:	Peer reviewed article published in a journal
Professor:	Professor Sanjosé, Marlène
Affiliation:	Génie mécanique
Date Deposited:	26 Jan 2023 23:51
Last Modified:	03 Feb 2023 15:35
URI:	https://espace2.etsmtl.ca/id/eprint/26128

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