基于ANSYS汽轮机叶型的优化设计

Optimization Design of Turbine Blade Profile Based on ANSYS

随着能源短缺问题日益严重,通过使用低温余热发电系统吸收工业生产过程中剩余热能并转化成电能,可有效的提高资源利用率。汽轮机作为该系统的核心部件,它的叶型对系统工作效率具有极大影响。因此,根据以往经验参数建立出它的三维模型,并对其进行有限元分析,结果表明该叶型具有非常大的优化空间。基于叶片数值模型,使用ANSYS软件对其进行优化设计,可得最优参数值。为了验证优化结果,可使用该软件对它的流道速度迹线、流道内熵分布结果进行对比仿真测试,以及使用实验设备对该汽轮机转速和工作效率进行测试,结果表面优化后各项性能均有提高,其中最大转速提高了57.5%,工作效率提高了9.56%。

As energy shortage is becoming more serious,the utilization rate of resources can be effectively improved by using low-temperature waste heat power generation system to absorb the residual heat energy in the industrial production process and converting it into electric energy.As the core part of the system,the turbine blade profile has significant impact on the system efficiency.This paper establishes a three-dimensional model according to the previous empirical parameters and carries out the finite element analysis.The results show that the blade profile has a very large optimization potential.Based on the blade numerical model,the optimal parameters can be obtained by using ANSYS software.In order to verify the optimization results,the software can be used to compare and simulate the velocity trace and entropy distribution results in the flow passage,as well as to test the speed and working efficiency of the steam turbine experimentally.The results show that after the surface optimization,the performance of the turbine is improved,with the maximum speed increased by 57.5%and the working efficiency increased by 9.56%.