G050053 Research on Low Noise Axial Fan by Sweep Blade

Abstract

Fans and blowers are used in many kinds of industrial fields. The targets for the development are high efficiency, low costs, high reliability and low noise. The reduction of the noise is one of the most important issues for the axial fan. In this research the effect of the blade sweep on the performance and the flow field is investigated by using CFD. By using the results of the numerical study, y500mm prototype axial fan is manufactured and carried out experiments for performance and noise. The effect of the sweep on the performance and the noise are clarified. The influence of rotating stall and back flow on the noise is experimentally clarified.