热科学学报：英文版2008，Vol.17Issue(2)：156-162,7.
Flow Fields with Tip Leakage Vortex in a Small Axial Cooling Fan
Flow Fields with Tip Leakage Vortex in a Small Axial Cooling Fan
Norimasa Shiomi 1Ying zi Jin 2Kenji Kaneko 1Yoichi Kinoue 1T. Setoguchi1
作者信息
- 1. Department of Mechanical Engineering, Saga University, 1 Honjo-machi, Saga, 840-8502, Japan
- 2. Institute of Mechatronics, Zhejiang Sci-Tech University, Hangzhou 310018, China
- 折叠
摘要
Abstract
In order to improve the fan characteristics, especially efficiency and noise level of a small axial cooling fan with a large tip clearance, the internal flow measurements with tip leakage vortex were carried out at fan rotor outlet using an I-type hot-wire probe. The probe was set toward two directions, parallel and normal to the meridional plane of test fan, and the two directional velocity components were measured. From the result of fan test it was found that the test fan didn't have the unstable characteristic with a positive gradient on its pressure - flow-rate curve. From the results of velocity measurement it was observed that the tip leakage vortex exited at maximum efficiency flow-rate and large flow-rate conditions. However, at small flow-rate conditions the tip leakage vortex was not observed and it was found that the flow field were enlarged toward radial outwards关键词
Axial fan, cooling fan, internal flow, and tip leakage vortexKey words
Axial fan, cooling fan, internal flow, and tip leakage vortex分类
数理科学引用本文复制引用
Norimasa Shiomi,Ying zi Jin,Kenji Kaneko,Yoichi Kinoue,T. Setoguchi..Flow Fields with Tip Leakage Vortex in a Small Axial Cooling Fan[J].热科学学报：英文版,2008,17(2):156-162,7.
