开始于可压缩流体叶轮机械的三元流动计算理论,目前正在向不可压缩流体叶轮机械方面推广使用。国外已把三元流动理论用于水泵和水轮机的设计和对性能进行予估。本文介绍根据文献[2]和[3]的准三元理论用电子计算机对混流式水泵水轮机转轮进行计算的结果,文中叙述了所采用的准三元理论和主要的数值计算方法,并列举了电子计算机计算的主要步骤和计算结果。 The theory of ternary flow calculation, starting with compressible fluid impeller machinery, is currently being promoted to incompressible fluid impeller machinery. The theory of ternary flow has been used abroad for the design of pumps and turbines and the performance estimation. In this paper, we present the results of a computer-based quasi-ternary theory based on the literature [2] and [3] for a Francis pump turbine runner. The quasi-ternary theory used and the main numerical calculation methods are described. The main steps of electronic computer calculation and calculation results.