Based on one dimensional aerodynamic analysis theory, a three-stage centrifugal turbine was designed by using R123 as working fluid. The aerodynamic performance of the centrifugal turbine was studied by numerical simulations. Numerical results showed that the circumferential efficiency of the three-stage centrifugal turbine with equal blades and high straight blades can reach 86.7% under design conditions. Under the off-design conditions, the efficiency increases initially with increasing expansion ratio, reaches a maximum and then decreases. The thermal parameters such as expansion ratio, enthalpy drop and reaction degree of each stage of centrifugal turbine increase from high pressure stage to low pressure stage with the change of expansion ratio of each stage group, and the last stage changes the most.
引用本文格式： 宋艳苹,刘海燕,黄典贵. 三级有机工质离心透平气动性能研究[J]. 四川大学学报: 自然科学版, 2021, 58: 044003.复制