冷气量对涡轮叶片性能影响的三维数值研究  

Three Dimensional Numerical Study on the Effect of Amount of Cooling Air on Performance of Turbine Blade

作　　者：李静 王旭飞 LI Jing;WANG Xu-fei(Xi′an Aeronautical University,Xi′an 710000,China)

机构地区：[1]西安航空学院,陕西西安710000

出　　处：《航空计算技术》2021年第3期55-58,共4页Aeronautical Computing Technique

摘　　要：为了研究不同冷气量对叶片表面温度、涡轮功以及效率的影响,建立了某气冷涡轮叶片的计算模型,采用气热耦合的方法,对模型进行了三维换热数值计算。研究结果表明,随着冷气量的增加,叶片表面温度开始降低较快,后来逐渐趋于平缓,涡轮功逐渐增大,效率逐渐降低。建立的研究方法适用于内冷通道复杂的叶片,可以满足工程应用的要求。In order to study the effect of different cooling air quantity on the surface temperature distribution,work and efficiency of turbine blade.A numerical model for conjugate heat transfer simulation was established for a turbine blade with air cooling,and 3D heat transfer simulation was accomplished.The results show that,with the increase of cooling air,the surface temperature dropes quickly at beginning,and then become mild,and the blade work goes up,the efficiency goes down.The research method established in this paper is suitable for blades with complex internal cooling channels and can meet the requirements of engineering application.

关 键 词：气热耦合方法 气冷涡轮叶片 冷气量 表面温度 

分 类 号：V231.1[航空宇航科学与技术—航空宇航推进理论与工程]