Flow Characteristics with Variations of Cut-Off Angle of Multi-Blade Fan for Ventilation
- Flow Characteristics with Variations of Cut-Off Angle of Multi-Blade Fan for Ventilation
- 강경준; 박준건; 신유환; 김광호
- Multi-Blade Fan; Cut-Off Angle; PIV; Velocity Fluctuation; Flow Field; 다익팬; 컥오프 각도; 입자영상속도계; 속도 요동; 유동장
- Issue Date
- The 10th AICFM
- 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 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. The improvement of the fan design
on cut-off is expected through understanding the flow pattern.
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- KIST Publication > Conference Paper
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