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Abstract: The test centrifugal fan is specially designed and
constructed for the non-touch measurement. The centrifugal fan used in
this work is entirely made of transparent material. In order to apply
PIV technique to measure the flow in the fan，the optical system of
particle image velocimetry is set up. The seeding particle is also
chose，and the set of the interval between two pulses are described. At
last，PIV measurements are applied to measure the flow within the vaned
diffuser. The absolute flow field is measured at one operating
condition. The experimental measurement results of the flow fields at
three different axial position are given. The characteristic of the
flow within the vaned diffuser is discussed.
Key words: Centrifugal fan Vaned diffuser PIV Measurement
CLC No: O35
国家重点基础研究计划基金资助项目(G19990203).
Received 20010216, received in revised form 20011030
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