Experimental Study of the Leakage Flow in an Axial-Flow Fan at Variable Loading
The present paper reports a 2D-PIV (particle image velocimetry) study of the Intimate Wash effect of the operating point on the leakage flow in a low-speed ring fan.First, the flow pattern has been studied at 12 operating points covering the whole characteristic curve.At very low loading, the leakage flow streams along the rotor ring and is directl