Abstract
Fans and blowers are used in various industrial fields. The most of the aims of the development is high efficiency and low noise. In this research the effect of blade shape of the axial fan on the performance and the noise is investigated. The wing shape and wing form is improved from the original fan by using CFD and experiment. The improved blade using Controlled-Diffusion-Airfoil profile and sweep and skew shape proved to improve the efficiency and reduce the noise. The effect of leading edge curvature radius of airfoil on the performance of the improved fan is investigated by CFD.
