Study on Influence of Radian and Longitudinal Offset of Worm Tongue on Fan Noise

Author

Liu, Guodan ; Zhou, Rui

Author_Institution

Qingdao Technol. Univ., Qingdao, China

fYear

2009

fDate

11-13 June 2009

Firstpage

1

Lastpage

4

Abstract

Flow field inside multi-blade centrifugal fan is calculated by Three-Dimensional Numerical Simulation, and the results showed that the backflow area close to front disc below the worm tongue is an important factor for influencing fan noise. Aiming at this area, changing radian and longitudinal offset of worm tongue is used to reduce the range of backflow area. And then many conditions of various radians and longitudinal offsets of worm tongue are calculated in order to analysis influence of radian and longitudinal offset of worm tongue on fan noise.

Keywords

acoustic noise; aeroacoustics; aerodynamics; computational fluid dynamics; fans; rotational flow; 3D numerical simulation; backflow area range; fan noise; multiblade centrifugal fan flow field; worm tongue longitudinal offset; worm tongue radial offset; Blades; Boundary conditions; Computational fluid dynamics; Computer worms; Fluid flow control; Impellers; Noise shaping; Numerical simulation; Shape; Tongue;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-2901-1

Electronic_ISBN

978-1-4244-2902-8

Type

conf

DOI

10.1109/ICBBE.2009.5163480

Filename

5163480