Inlet Gap Effect on Tonal Noise Generated from a Voluteless Centrifugal Fan
Artikel i vetenskaplig tidskrift, 2022

In this study, three voluteless centrifugal fans are compared for their aeroacoustic performances. The tonal noise is predicted by coupling the IDDES with Formulation 1A of Farassat. The sources of the tonal noise at the blade passing frequency (BPF) are identified. It is found that the sources are related to the fan inlet gap, which introduces higher velocity intensities and turbulent fluctuations interacting with the blade leading edge. By redesigning the gap, the tonal noise at the BPF is reduced effectively.

voluteless centrifugal fan

gap turbulence

tonal noise

computational aeroacoustics

Författare

Martin Ottersten

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Swegon Operations AB

Huadong Yao

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Lars Davidson

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

International Journal of Turbomachinery, Propulsion and Power

2504186X (eISSN)

Vol. 7 4 33

Minskning av ljud från centrifugalfläktar

Swegon, 2017-03-01 -- 2022-02-28.

Styrkeområden

Transport

Energi

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

Ämneskategorier

Annan fysik

Strömningsmekanik och akustik

Signalbehandling

DOI

10.3390/ijtpp7040033

Mer information

Senast uppdaterat

2024-01-03