Title :
A New Improved Structure of Small Axial Flow Fan
Author :
Li, Hong ; Jin, Ying-Zi ; Cui, Bao-Ling ; Zhang, Li ; Sun, Jian-Guo
Author_Institution :
Coll. of Mech. Eng. & Autom., Zhejiang Sci-Tech Univ., Hangzhou, China
Abstract :
To improve working performance of small axial flow fan, a new improved structure was proposed "numerical computation carried out for two sets of fan models using RNG k-e model. The results indicats that the improved models of the two sets have the same trend in static characteristics and flow distribution. Conclusions are as follows: (1) The improved results is satisfactory in static chateristics and efficiency. (2) After the structure improvement, the condition of blade tips separation vortex has been improved greatly, and velocity distributing more uniformly along radial. (3) The structure improvement results in the increase of turbulent intensity, which enables energy losses be reduced, hence, static characteristics and efficiency can be improved.
Keywords :
Navier-Stokes equations; angular velocity; fans; flow separation; turbulence; vortices; RNG k-ε model; axial flow fan; blade tips separation vortex; energy loss reduction; flow distribution; static flow characteristics; turbulent intensity; velocity distribution; Analytical models; Blades; Computational modeling; Kinetic energy; Mathematical model; Numerical models; Prototypes; CFD; energy losses; small axial flow fan; structure improvement; turbulent intensity;
Conference_Titel :
Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM), 2012 International Conference on
Conference_Location :
Hunan
Print_ISBN :
978-1-4673-0458-0
DOI :
10.1109/CDCIEM.2012.19