In this paper, a passive fan noise control approach implemented by applying microperforated materials to the shroud of an axial fan will be discussed. Microperforated panels with different flow resistances were compared to an unperforated fan housing. In addition to the shroud treatment, the application of an extended microperforated housing to the inlet-end and outlet end of the fan will be discussed.
axial fan, noise control, microperforated film
Acoustics and Noise Control
Date of this Version
Seung-kyu Lee and J. Stuart Bolton, “The application of microperforated material to control axial fan noise,” Proceedings of FAN2015: International Conference on Fan Noise, Technology and Numerical Methods, 13 pages, Lyon, France, April 2015