Abstract

The present paper deals with the optimization study of an axial flow fan, which optimizes 3D fan rotor blade geometry by the application of optimization algorithm to the design variables of spanwise camber, stagger angles and chord lengths for improving fan performance and maximizing fan efficiency. Through the design optimization process of fan rotor blade, optimal fan rotor is obtained and then coupled with outlet guide vane. Computational fluid dynamics analysis is conducted to verify the performance and efficiency of the present optimal fan design. The design values of performance and efficiency of the present optimal fan agree well with the CFD results and the present optimal fan design gives the efficiency improvement of 6.7% compared to the initial design.

Keywords

Axial flow fan, Efficiency, Camber angle, Optimization, Performance, Stagger Angle.