Effect of Cut-off Angle on Flow Pattern of Centrifugal Multi-blade Fan

Title
Effect of Cut-off Angle on Flow Pattern of Centrifugal Multi-blade Fan
Authors
강경준신유환이윤표김광호
Keywords
Centrifugal fan; Multi-blade; PIV; Cut-off angle; 원심홴; 다익; 입자영상유속계; 컷 오프각
Issue Date
2010-06
Publisher
유체기계저널
Citation
VOL 13, NO 3, 37-42
Abstract
This study investigated on details of flow characteristics of a multi-blade fan for domestic ventilation. Experiments and analysis were carried out to describe on flow pattern with variations of cut-off angle near the scroll housing throat, which were performed by PIV measurement for the flow field and by total pressure probes. The stagnation point at cut-off region of the fan moves to the exit of the scroll housing as the cut-off angle increases. The movement of stagnation point and the variation of throat area of the scroll housing influence to the distribution of velocity magnitude at the exit of the fan. Furthermore, a large distortion of the velocity distribution at the scroll exit causes to increase mixing loss along the flow path.
URI
http://pubs.kist.re.kr/handle/201004/37607
ISSN
1226-9883
Appears in Collections:
KIST Publication > Article
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