轴流式涡轮增压器叶片结构参数优化

Optimization of Blade Structure Parameters of Axial Flow Turbocharger

利用ANSYS有限元分析软件的fluent模块与static structural模块对某轴流式涡轮增压器的涡轮进行流场模拟及结构应力分析。通过对叶片进行流-固耦合分析,得出叶片在离心载荷与气动载荷共同作用下的应力云图,进而得出应力最值多集中在叶根部分。通过对结构参数的优化,将叶根处最大应力由182. 18MP降低到161. 06MP,涡轮总体应力都有所下降。

The flow field simulation and structural stress analysis of the turbine of an axial turbocharger are carried out by using the fluent module and static structural module of ANSYS finite element analysis software.Through the fluid-solid coupling analysis of the blade,the stress cloud diagram of the blade under the combined action of centrifugal load and aerodynamic load is obtained,and it is concluded that the most stress is concentrated in the blade root.By optimizing the structural parameters,the maximum stress at the blade root is reduced from 180.41MP to 160.73MP,and the overall turbine stress is reduced.