境界要素法と离散涡法によるク口スフ口一フアン内部流れの解析

Flow Analysis in a Cross-Flow Fan by Boundary Element Method and Kiscrete Vortex Method

作者提出了一种计算横流式风机内部流动的计算方法。该方法对叶轮和蜗壳均未作任何假设 。

A analysis method has been developed for the prediction of flow in a cross flow fan with a casing.The method has no simplifying assumptions regarding the geometry of either the impeller blades or the casing.Taking into consderation the effect of the boundary layer on the upper wall surface of the casing,the internal fow is analyzed using both the boundary element method and the discrete vortex method by assuming that the flow is two dimensional,inviscid and incompressible.In order to satisfy Kelvins theorem,vortices are shed at the trailing edges of each impeller blade.The discrete vortex method is used to approximate the convection of the free vortices.Results are given for the cross flow fan with two different configruation of the casing with an identical impeller.