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采用有限体积法和非结构四面体网格,以三维时均N-S方程和RNGk-ε两方程湍流模型为基础,采用SIMPLE算法,对多叶离心式通风机内部整机流场进行了三维数值模拟,给出了子午面和回转面上的压力和速度分布,揭示出多叶离心式通风机内一些重要的流动特征,并改变叶轮进口安装角进行数值模拟,得出了性能的变化规律,为多叶离心式通风机优化设计提供依据。
Based on the three-dimensional time-averaged Navier-Stokes equations and the RNGk-ε turbulence model, the SIMPLE algorithm is used to simulate the flow field in the multi-leaf centrifugal fan with three-dimensional numerical simulation , The pressure and velocity distributions on the meridional and gyroscopic surfaces are given, some important flow characteristics in the multi-bladed centrifugal fan are revealed, and the numerical simulation of the impeller inlet mounting angle is carried out. The change law of the performance is obtained Multi-leaf centrifugal fan to provide the basis for the optimal design.