Sound Emissions of Axial Fans with Leading-Edge Serrations on different spanwise Locations

Beitrag bei einer Tagung
(Konferenzbeitrag)


Details zur Publikation

Autorinnen und Autoren: Czwielong F, Krömer F, Becker S
Jahr der Veröffentlichung: 2019
Tagungsband: PROCEEDINGS OF INTERNOISE 2019
The 49th International Congress and Exhibition on Noise Control Engineering

Sprache: Englisch


Abstract

Axial fans are used in a variety of technical systems such as air conditioners,
trains, cars and ventilation systems. In these systems, axial fans are a dominant
source of noise. Based on the investigations of flat-plate fans and airfoils, it has
been found that serrated leading edges reduce the sound radiation compared
with a straight leading edge. In this study, the sound emission of axial fans with
leading-edge serrations, applied to dierent spanwise locations of the fan blade,
was investigated. For that three fans with different leading-edge configurations
(fully serrated, serrations on the outer 2/3 and 1/3 of the fan blade) and a reference
fan without serration were examined experimentally. The results showed that
leading-edge serrations influence the sound emissions of the axial fans. For high
volume flow rates, the serrations led to a reduction of the sound radiation - the fan
with serrations on the full span showed the highest sound reduction. For low volume
flow rates, the sound emission was increased with the leading-edge serrations.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Becker, Stefan apl. Prof. Dr.
Lehrstuhl für Prozessmaschinen und Anlagentechnik
Czwielong, Felix
Lehrstuhl für Prozessmaschinen und Anlagentechnik
Zenger, Florian
Lehrstuhl für Prozessmaschinen und Anlagentechnik


Zusätzliche Organisationseinheit(en)
Lehrstuhl für Prozessmaschinen und Anlagentechnik


Zitierweisen

APA:
Czwielong, F., Krömer, F., & Becker, S. (2019). Sound Emissions of Axial Fans with Leading-Edge Serrations on different spanwise Locations. In PROCEEDINGS OF INTERNOISE 2019 The 49th International Congress and Exhibition on Noise Control Engineering. Madrid, ES.

MLA:
Czwielong, Felix, Florian Krömer, and Stefan Becker. "Sound Emissions of Axial Fans with Leading-Edge Serrations on different spanwise Locations." Proceedings of the inter.noise 2019, Madrid 2019.

BibTeX: 

Zuletzt aktualisiert 2019-01-07 um 14:08