基于AxSTREAM的后导叶动调轴流风机的气动设计

基于叶轮机械设计软件AxSTREAM完成了对带后导叶的动调轴流风机3种运行工况下的动叶设计.并对比分析了设计后动叶在运行工况点的性能,找到同时适合运行工况的最佳动叶型.根据最佳动叶对R级动叶可调轴流风机匹配后导叶进行整机的三维气动数值验算.结果表明:气动设计得到的叶型中工况c设计出的动叶在3种工况下运行最合理,同时,匹配后导叶后,充分地利用动叶出口旋绕动能,提高通风机的全压效率和全压压比,设计工况点下的性能均有提高;同时也为动调风机的工程应用提供了快速高效的设计方法.

The Matching Design of Back Vane for Rotor Blade Adjustable Axial Fan Based on AxSTREAM

By using AxSTREAM (the mechanical design software for impeller), the dynamic blade design is completed under three operating conditions of the dynamic axial fan with the rear guide vane.The performance of the moving blade in the running condition is compared with the previous one to find the best dynamic leaf type at the same time.Based on the best moving blade, adjusting the R stage moving blade to the axial flow fan,three dimensional aerodynamic numerical calculation of the whole machine is carried out.Results show that the moving blade of the leaf type design point c based on the aerodynamic design runs in the most reasonable way in the three conditions.At the same time,after matching the back guide vane, making full use of the rotor exit that kinetic energy,and improving the efficiency of the fan and the total pressure ratio,the performance of the designed working condition is improved.This research also provides a fast and efficient design method for the engineering application of the dynamic air fan.