Abstract: Experimental investigation of the passive control on improving
the unstable characteristics in axial flow fans is performed. It
is confirmed that the air-separator is an excellent equipment
for rotating stall suppression. The air-separator can
effectively remove low energy fluid near the fan casing.
Further, it can improve the low flow rate range performance and
increase stall margin of the axial flow fan.
Key words: Axial
flow fan Unstable characteristics Performance
*
This project
is supported by National Key Project of Fundamental Research. Manuscript
received on April 24, 1996; revised manuscript March 18, 1997
|