本文按实际气体计算有机工质蒸气物性,编写有机工质向心透平气动设计和变工况性能预测程序,对以R123为工质的向心透平进行气动设计优化、变工况性能预测计算。通过数值实验模拟分析三维流动情况和整机性能,结果显示透平设计和性能预测结果有效、可靠,但气动设计对强激波引起的损失及气流偏转估计不足,需要改进气动设计和性能预测方法,优化叶型。 In this paper, the calculation of physical properties of organic matter vapor physical properties based on the preparation of the working fluid to the heart of the turbine aerodynamic design and variable performance prediction program, to R123 as the working fluid to the heart of the aerodynamic design optimization, variable performance prediction Calculate. Numerical simulations of three-dimensional flow and machine performance were carried out. The results show that the turbine design and performance prediction are effective and reliable. However, the aerodynamic design is not enough to estimate the losses caused by strong shocks and the deflection of the airflow. Therefore, the aerodynamic design and performance prediction methods need to be improved , Optimize leaf type.