Active control of centrifugal fan noise: Modeling design guidelines

Esplin, J. James; Boyle, John K.; Sommerfeldt, Scott D.; Gee, Kent L.

doi:10.1121/2.0000016

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[9][10][11][12] However, it is more important to analyze and verify the optimal design products through experiments to achieve better performance and noise control. [13][14][15] Cau et al 16 argued that a severely distorted primary flow with early flow separation on the suction side at both low and design flow rates occurs due to the poor design of the flow channel in these fans. Zhang et al 17 conducted an experimental study on a centrifugal fan by a half vane diffuser which can improve fan performance and reduce noise.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations on the performance and noise characteristics of a forward-curved fan with the stepped tongue

Yang

Xu³

et al. 2019

Measurement and Control

View full text Add to dashboard Cite

This work presents an experimental study to investigate the influence of step volute tongue on aerodynamic performance and aeroacoustic behavior of a forward-curved fan. The noise characteristics are analyzed and controlled based on measured acoustic pressures for various stepped tongues; meanwhile, fan performance is detected and optimized. The design parameters of the stepped tongues are presented to provide significant physical insight into increasing the static pressure as well as the efficiency of static pressure and reducing the fan noise generation. The comparison of the test results indicates that the improved static pressure and its efficiency of the HLHL model have increased by 15.67 Pa and 3.57%, respectively, by comparing with those of the baseline model. At 740 m3/h, a great correlation between different arrays of stepped tongue and the noise generation was observed. The tonal noise level of the HLHL model is a better optimization scheme because it decreases as much as 1.2 dB for the noise generation of forward-curved fan. In particular, it is found that some stepped tongues of the volute tongue achieved the goal of reducing noise generation and improving the performance of fan by experimental measurement at the same time.

show abstract