The shape of meridional flow channel for diffuser of mixed-folw pumps is given, the geometrical model of different section of the diffuser is built, and the characteristics of the model is analyzed.

• 建立了空间导流器轴面流道的几何模型,并对其特点进行了分析,给出了求解过流断面面积的方法,并列举了计算实例。