Numerical simulation and analysis of the flow in a two-staged axial fan

7th International Conference on Pumps and Fans

机械制造;工业技术

Xu, J.Q.^1 ; Dou, H.S.^1 ; Jia, H.X.^1 ; Chen, X.P.^1 ; Wei, Y.K.^1 ; Dong, M.W.^2

Faculty of Mechanical Engineering and Automation, Zhejiang Sci-Tech University, Hangzhou

310018, China^1

Zhejiang Shuangyang Fan CO. Ltd., Shangyu

312300, China^2

关键词: Compressible Navier-Stokes equations;    Flow charac-teristics;    Flow field distribution;    Mutual effects;    Simulation and analysis;    Three dimensional turbulent flow field;    Turbulent models;    Wake interactions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/129/1/012060/pdf
DOI  :  10.1088/1757-899X/129/1/012060

学科分类：工业工程学

来源: IOP

【 摘 要 】

In this paper, numerical simulation was performed for the internal three-dimensional turbulent flow field in the two-stage axial fan using steady three-dimensional in-compressible Navier-Stokes equations coupled with the Realizable turbulent model. The numerical simulation results of the steady analysis were combined with the flow characteristics of two- staged axial fan, the influence of the mutual effect between the blade and the vane on the flow of the two inter-stages was analyzed emphatically. This paper studied how the flow field distribution in inter-stage is influenced by the wake interaction and potential flow interaction of mutual effect in the impeller-vane inter-stage and the vane-impeller inter-stage. The results showed that: Relatively, wake interaction has an advantage over potential flow interaction in the impeller-vane inter-stage; potential flow interaction has an advantage over wake interaction in the vane-impeller inter-stage. In other words, distribution of flow field in the two interstages is determined by the rotating component.