Table of Contents
ISRN Mechanical Engineering
Volume 2013 (2013), Article ID 274135, 7 pages
http://dx.doi.org/10.1155/2013/274135
Research Article

Multiobjective Optimization Design for Skew and Sweep Parameters of Two-Stage Blades of Axial Fan

1Engineering Research Center of Advanced Mining Equipment, Ministry of Education, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China
2College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China

Received 11 March 2013; Accepted 4 April 2013

Academic Editors: M. Ahmadian, Y.-H. Lin, and B. Yu

Copyright © 2013 Wen-hui Yue et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Computer aided design and numerical simulation have been widely applied in optimization design of fan blades. In this paper, skew and sweep parameters of two-stage blades of an axial fan are optimized by using the particle swarm optimization algorithm. First, the skew and sweep parameters of two-stage blades of an axial fan are defined. Second, response surface methodology is used to study the relationship between the skew and sweep parameters of two-stage blades and the total pressure and the efficiency of the axial fan. The response surface model that describes the relationship between the skew and sweep of two-stage blades and the total pressure and the efficiency of the axial fan is established. Finally, with the skew and sweep of two-stage blades being design variables and the total pressure and the efficiency being the objectives, a particle swarm optimization algorithm is developed to solve this complex multiobjective optimization problem. The optimal result shows that the total pressure increases by 49.1 Pa and the efficiency increases by 1.55%. In addition, the aerodynamic performance of the axial fan is improved. This research has significance to optimization design of the axial fan.