Visualization of tip vortex flow in an open axial fan by EFD |
| |
| Authors: | W. X. Cai N. Shiomi K. Sasaki K. Kaneko T. Setoguchi |
| |
| Affiliation: | (1) National Key Laboratory on Aero-engines, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing, 100083, China;(2) Department of Mechanics and Science Engineering, Peking University, Beijing, 100085, China; |
| |
| Abstract: | The behavior of tip vortex in an axial fan without casing wall (called open axial fan) was discussed and analyzed. The velocity measurement was performed by using two-components Laser Doppler Velocimetry (LDV) system. The detailed velocity and vorticity distribution inside blade passage and downstream of rotor were obtained. Thus the structure of tip vortex and its behavior were graphically visualized by experimental fluid dynamics (EFD). The tip vortex flow trace was indicated with the calculation of vorticity. As a result, it was found that tip vortex was generated at blade tip region near leading edge and it extended to downstream of blade exit with its core tending inward to hub direction. In addition, leading edge vortex was also found at the forepart of the experimental open fan. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
