TY - GEN
T1 - Experimental study for the effect of vaned diffuser leading edge on the noise generated from a centrifugal fan
AU - Wei, Zhang
AU - Qi, Gong Wu
AU - Hua, Fan Xiao
AU - Guang, Xi
PY - 2009
Y1 - 2009
N2 - This paper studies a novel vaned diffuser with inclined leading edge to reduce the fan noise. The aerodynamic performances and sound pressure level (SPL) of the centrifugal fan with five different diffusers were measured in an anechoic chamber, and the inclined angles of the five diffusers are 45°, 60°, 120°, 135° and 150°, respectively. The flow coefficient of the fan varies from 0.037 to 0.14, the rotational speed ranges from 20000rpm to 35000rpm. The test results show that, by using diffuser vanes with inclined leading edge, the overall noise of the fan is reduced in the experimental conditions, and it has the minimum value at the flow rate coefficient of 0.084. The overall noise reduction of 5.3dB was made with the diffuser leading edge inclined angle of 150°.
AB - This paper studies a novel vaned diffuser with inclined leading edge to reduce the fan noise. The aerodynamic performances and sound pressure level (SPL) of the centrifugal fan with five different diffusers were measured in an anechoic chamber, and the inclined angles of the five diffusers are 45°, 60°, 120°, 135° and 150°, respectively. The flow coefficient of the fan varies from 0.037 to 0.14, the rotational speed ranges from 20000rpm to 35000rpm. The test results show that, by using diffuser vanes with inclined leading edge, the overall noise of the fan is reduced in the experimental conditions, and it has the minimum value at the flow rate coefficient of 0.084. The overall noise reduction of 5.3dB was made with the diffuser leading edge inclined angle of 150°.
UR - https://www.scopus.com/pages/publications/77953185783
U2 - 10.1115/GT2009-59706
DO - 10.1115/GT2009-59706
M3 - 会议稿件
AN - SCOPUS:77953185783
SN - 9780791848883
T3 - Proceedings of the ASME Turbo Expo
SP - 729
EP - 736
BT - Proceedings of the ASME Turbo Expo 2009
T2 - 2009 ASME Turbo Expo
Y2 - 8 June 2009 through 12 June 2009
ER -