Simulation and Experiment Research of Aerodynamic Performance of Small Axial Fans with Struts

作     者：CHU Wei LIN Peifeng ZHANG Li JIN Yingzi WANG Yanping Heuy Dong Kim Toshiaki Setoguchi 

作者机构：Key Laboratory of Fluid Transmission Technology of Zhejiang Province Zhejiang Sci-Tech University Xuelin Road 928 0571 Hangzhou China Department of Application & Engineering Zhejiang Economic & Trade Polytechnical Xuelin Road 280 0571Hangzhou School of Mechanical Engineering Andong National University Seongcheon-Dong1375 Gyeongdong RD 760-749Andong Korea Department of Mechanical Engineering Saga University Honjo-machi 840-8502Saga Japan 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2016年第25卷第3期

页      面：216-222页

核心收录：

学科分类：080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：supported by National Natural Science Foundation of China(No.51276172) National Science and Technology Support Project(No.2013BAF05B01)etc 

主　　题：struts shape interaction aerodynamic performance 

摘      要：Interaction between rotor and struts has great effect on the performance of small axial fan systems. The small axial fan systems are selected as the studied objects in this paper, and four square struts are downstream of the rotor. The cross section of the struts is changed to the cylindrical shapes for the investigation： one is in the same hy- draulic diameter as the square struts and another one is in the same cross section as the square struts. Influence of the shape of the struts on the static pressure characteristics, the internal flow and the sound emission of the small axial fans are studied. Standard K-s turbulence model and SIMPLE algorithm are applied in the calculation of the steady fluid field, and the curves of the pressure rising against the flow rate are obtained, which demonstrates that the simulation results are in nice consistence with the experimental data. The steady calculation results are set as the initial field in the unsteady calculation. Large eddy simulation and PISO algorithm are used in the transient calculation, and the Ffowcs Williams-Hawkings model is introduced to predict the sound level at the eight monitoring points. The research results show that： the static pressure coefficients of the fan with cylindrical struts increase by about 25% compared to the fan with square strum, and the efficiencies increase by about 28.6%. The research provides a theoretical guide for shape optimization and noise reduction of small axial fan with struts.