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http://dx.doi.org/10.5293/KFMA.2010.13.3.037

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

Kang, Kyung-Jun (한국과학기술연구원)
Shin, You-Hwan (한국과학기술연구원)
Lee, Yoon-Pyo (한국과학기술연구원)
Kim, Kwang-Ho (한국과학기술연구원)
Publication Information
The KSFM Journal of Fluid Machinery / v.13, no.3, 2010 , pp. 37-42 More about this Journal
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.
Keywords
Multi-blade Centrifugal Fan; PIV; Cut off angle;
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  • Reference
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