轴流风机中支板通道的流动分析及改进

采用了NUMECA FINE软件包Euranus求解器对轴流风机电机支板内部流动进行了全三维数值模拟,结果表明电机支板的安装对风机的性能具有较大的影响.根据计算结果对支板结构进行了改型设计,并对改型后轴流风机的气动性能进行了数值计算,改型结果表明,采用改型后的支板结构使得整个流量范围内风机的效率有所提高,电机支板内部流动损失明显减小,流动更加合理.

Flow analysis and the improvement of axial fan support strut

Three-dimensional numerical investigation were carried out to investigate the flow-field in the passage between support struts in front of the axial-flow fan with the help of the commercial code EURANUS,which is an integral part of the software package NUMECA FINE.It was found that the support strut had significant impact on the axial-flow fan performance.The optimization design was performed for the support strut based on numerical result and flow analysis.In addition,three-dimensional flow analysis was carried out to verify the performance improvement of the newly optimized support strut.It was found that with the new strut the efficiency of the fan is improved over the entire range of mass flow,the losses are locally reduced and the flow in the passage between the support struts becomes more reasonable.