摘要
利用FLUENT软件,以三维时均N-S方程和标准两方程湍流模型为基础,采用SIMPLE算法,对离心式通风机内部整机流场进行了三维数值模拟并分析了其内部流动特征。数值模拟结果显示,离心式通风机内部流场存在着明显的不对称性,各个叶轮流道的压力和速度分布并不相同。最后利用五孔探针流场测试系统试验台,使用MGS通风机实验数据采集系统和数据处理系统实验验证模拟流场的准确性,并通过改变风机的出口尺寸,对整体风机的性能分析,为离心式通风机的优化设计提供了依据。
In this paper the inner flow field in the centrifugal fan is numerically simulated.In the mumerical simulation of three-dimensional flow in the multi-blade centrifugal fan,the three-dimensional time averaged N-S equation and the Standard turbulent model are used,Finite Volume Method,Hybrid grids and the SIMPLE algorithrn are selected.It is found that the inner flow field in the centrifugal fan is asymmetric,i.c the distribution of the pressure and velocity in all blade channels is not same.Make use of our ＂five-hole probe flow field measurement system＂ test bench and fan experimental data acquisition system and data-processing system simulation experiment to verify the accuracy of the flow field,and provide the basis for optimal design by analyzing affection of centrifugal fan with changing the fan size.
出处
《应用能源技术》
2011年第6期26-30,共5页
Applied Energy Technology
