원심 다익홴의 유동에 대한 컷 오프 각도의 영향
Effect of Cut-off Angle on Flow Pattern of Centrifugal Multi-blade Fan
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.
- Maeng, J. S and Han, S. Y., 2003, “Shape optimization of cut-off in a multi-blade fan/scroll system using neural network,” Heat and Mass Transfer 46:2833-2839.
- Raj, D. and Swim, W. B., 1981, “Measurements of the Mean Flow Velocity and Velocity Fluctuations at the Exit of an FC Centrifugal Fan Rotor”, Transactions of ASME, Journal of Engineering for Power, 103:393-399.
- Kind, R. J., and Tobin, M. G., 1990, “Flow in a Centrifugal Fan of the Squirrel-Cage Type,” Transactions of ASME Journal of Turbomachinery, 112(1):84-90.
이 논문을 인용한 문헌 (1)
- Lee, Jang-Ho 2011. "" 유체기계저널 = Journal of fluid machinery, 14(2): 68~70
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