10MW轴流空气透平叶片全三维反向优化设计

Three Dimensional Optimization Design Method of 10MW Axial Flow Air Turbine Blade

以10 MW轴流空气透平某级叶片为研究对象,利用ANSYS ICEM对其进行模型创建和网格划分,利用Fluent对其进行三维数值模拟。通过控制载荷的方法对动静叶进行三维反向优化设计,结果表明,优化后的叶形表面压力分布由于优化前,载荷分布更加合理,附面层转捩产生回流的现象得到改善,最终优化结果使得级相对内效率从85.23%提高到现在的92.24%,提升了7个百分点,明显提升了级的气动性能。

Taking 10 MW axial flow air turbine as the research object, the model is created and meshed by ANSYS ICEM, and three-dimensional numerical simulation is carried out by fluent. On the blade 3D reverse optimization design, through the method of load control results show that the optimized blade surface pressure distribution due before optimization, the load distribution is more reasonable, the boundary layer transition from backflow phenomenon has been improved, the final optimization result stage relative efficiency is increased from 85.23% to 92.24% now, up 7%, significantly enhance the level of aerodynamic performance.