Analysis of Internal Flow Field for Centrifugal Fan in Series


Article Preview

Centrifugal fan in series with high wind pressure is the key facility of pneumatic transport equipment. To consider the impact of changed conditions on performance of centrifugal fan, internal flow of three-stage centrifugal fan at rated speed in different total pressure conditions is analyzed by CFD software FLUENT6.3 in this paper. Flow characteristics are obtained and the differences of total pressure and velocity distribution in each impeller are analyzed under different conditions, velocity distribution on the meridian plane and section of wind guide plates are compared. Finally, curves of P-Q and P-η at 4600 r/min are forecasted through the analysis of the data, which provide references for reducing impact that condition alteration on fan performance and improving the efficiency of the fan.



Edited by:

Xiong Zhou and Zhenzhen Lei




Y. J. Fan et al., "Analysis of Internal Flow Field for Centrifugal Fan in Series", Applied Mechanics and Materials, Vol. 233, pp. 96-99, 2012

Online since:

November 2012




[1] Ding Wensi, He Xiangbin, Numerical simulation of internal flow field in three-stage centrifugal fan of grain sucker, J. Transactions of the Chinese Society of Agricultural Engineering. 27 (2011) 78-79.

[2] DOU Yong, LI Song, HUANG Dongtao. Numerical Prediction for Performance of Centrifugal Fans under Off-design Operations, J. Fan Technology. 4 (2007) 3-11. (in Chinese).

[3] YANG Ce, CHEN Shan, LI Du, et al. Inlet Recirculation Influence to the Flow Structure of Centrifugal Impeller, J. CHINESE JOURNAL OF MECHANICAL ENGINEERING. 23 (2010) 647~654.


[4] YU Z., LI Song, HE W. Numerical Simulation of Flow Field for a Whole Centrifugal Fan and Analysis of the Effects of Blade Inlet Angle and Impeller Gap, J. HVAC&R Research, 11 (2005) 263–283.