【摘要】 根据给定的工质R245fa和透平输出功率10k W,利用MATLAB软件编写有机工质向心透平气动设计程序,对设计输入参数进行敏感性分析,并利用遗传优化算法(Genetic Algorithm)对一维气动设计进行全局优化,得到约束条件下最高轮周效率为85.76%。在ANSYS平台上利用一维气动设计优化结果进行三维造型设计和计算流体力学(Computational fluid dynamics,CFD)数值模拟。CFD模拟结果显示,模拟的透平输出功率与一维设计结果误差为3%,透平效率误差为2.08%,说明一维气动设计准确性。更多还原

【Abstract】 Computational program for aerodynamic design of ORC radial-inflow turbine was encoded by MATLAB,optimized for working fluid R245 fa and a turbine output power of 10 k W,to conduct sensitivity analysis on input parameters. The unidimensional aerodynamic design was optimized by using genetic algorithm,and a maximum wheel efficiency of 85. 76%was achieved with constraints. The optimized result was used to run 3D profile design and Computational fluid dynamics( CFD) simulations by ANSYS. It is shown that the unidimensional aerodynamic design is accurate,with minor deviations of 3% on turbine output power and 2. 08% on turbine efficiency.更多还原