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本文针对以超临界二氧化碳(S-CO2)为工质的向心涡轮,在常规一维分析方法的基础上,引入相应的损失模型,开发出适用于真实气体工质物性计算的一维气动设计程序和一维变工况性能预测程序.文中首先利用试验对损失模型的准确性进行了验证,进而针对某S-CO2向心涡轮,利用所开发程序进行了设计和性能分析,并采用三维CFD方法进行了数值模拟.结果显示,设计方案的气动性能和变工况运行性能良好,并且一维计算结果与三维模拟结果总体吻合,说明一维程序的分析结果精确可靠;但一维预测程序对于堵塞点质量流量计算值偏高,为程序进一步改进指明了方向.“,”This paper developed two computer codes for radial inflow turbine design and analysis with supercritical carbon oxide(S-CO2) as working media.Both codes incorporated empirical loss model and real gas thermodynamic properties.First the accuracy of the loss models were validated against experimental data.Then an S-CO2 radial inflow turbine was designed and analyzed by developed codes,and checked by 3D CFD numerical simulations.Final results indicated that the design and off-design performance of the designed S-CO2 radial-inflow turbine were good,and the results of one-dimensional calculation agreed well with values of numerical simulation,which demonstrated that the codes were precise and reliable.However the predicted choking mass flow rate was higher than that of numerical simulation,and further improvement can be made in that respect.