𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Experimental studies of discrete tone noise from an axial flow fan

✍ Scribed by N. Chandrashekhara

Publisher
Elsevier Science
Year
1970
Tongue
English
Weight
290 KB
Volume
13
Category
Article
ISSN
0022-460X

No coin nor oath required. For personal study only.

✦ Synopsis

Some measurements of discrete tone radiation from an axial flow fan are presented here in the form'of tone directivity. These are explained from the established theory relating them. The effect of cut-off is explained. The measured discrete tone power at blade passing frequency and harmonics are presented. These are compared with the radiation efficiency of corresponding modes.

πŸ“œ SIMILAR VOLUMES

Reduction of interaction tones from axia
Reduction of interaction tones from axial flow fans by non-uniform distribution of the stator vanes
✍ P.E. Duncan; B. Dawson πŸ“‚ Article πŸ“… 1975 πŸ› Elsevier Science 🌐 English βš– 692 KB

A theoretical model is presented for investigating the acoustic radiation resulting from the fluctuating forces at a downstream stator row which has non-uniformly circumferentially spaced stator vanes. It is found that, under certain circumstances, judicious uneven distribution of the stator vanes c