摘要
通过使用FLUENT软件模拟计算单级蜗壳式离心泵的全三维流场,发现泵叶轮内各通道的流量、流速及压力等分布有显著差别,流动呈现明显的非对称性及叶轮载荷不均。该计算选用多重参考坐标系及标准k-ε湍流模型。为此计算了泵体所受到的轴向力和径向力,结果表明因泵内流场非对称而产生出较大的径向力。同时还将泵性能的预测值与实测值作了对比以验证计算结果。
A three- dimensional turbulent flow through entire a centrifugal pump is numerically simulated using FLUENT software. The analysis is completed in a multiple reference frame. The standard κ-ε turbulence models is applied. It is found obviously in the simulation that flow field is asymmetric, i.e., flow speed and pressure field are totally different among all passages in the impeller. Axial force and radial force on the pump are calculated as well. It is indicated that radial force due to asymmetry of flow field is significant and probably affects stability of pump working by results. The current computation is verified by comparing predicted and measured head.
出处
《流体机械》
CSCD
北大核心
2006年第2期30-33,共4页
Fluid Machinery
