离心风机叶轮三维反问题气动优化设计  

Aerodynamic Optimization Design of Centrifugal Fan Impeller Based on Three-dimensional Inverse Design Method

作　　者：杨魏[1] 王宏[2] 吴玉林[3] 

机构地区：[1]中国农业大学水利与土木工程学院,北京100083 [2]清华大学核能技术与新能源技术研究院,北京100084 [3]清华大学热能工程系,北京100084

出　　处：《农业机械学报》2012年第9期43-48,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(51139007);中央高校基本科研业务费专项资金资助项目(15051105)

摘　　要：基于三维反问题设计方法和CFD技术,结合试验设计方法和模拟退火优化算法,以轴面流道形状参数和叶片形状参数为设计变量,以叶轮效率为优化目标,建立了离心风机叶轮三维反问题气动优化设计方法。叶片形状通过三维反问题设计方法由叶轮的环量分布参数表达。运用该方法进行了离心风机叶轮的优化设计,叶轮效率提高了3.3%。根据建立的优化设计变量和叶轮效率之间的响应面函数关系式,分析了不同轴面流道形状参数和环量分布参数及参数间交互效应对叶轮效率的影响。结果表明:相对于轮盘处轴面流道轮盖处型线和环量分布形式,轴面流道叶片进口边倾斜角对叶轮效率影响更为显著。An optimization design method based on three-dimensional inverse design method and CFD was developed by combining design of experimental method, response surface method and simulated annealing optimization calculation. The shape parameters of meridional channel and blade were taken as optimization design parameters, and the impeller efficiency was setting as the optimization object. The shape parameters of the blade were expressed by velocity circulation distribution parameters through three- dimensional inverse design method. The optimization method was applied to a centrifugal fan impeller with the efficiency improved by 3.3%. The effects of the meridional channel shape parameters, circulation parameters and their interaction effects on the impeller efficiency were analyzed according to the constructed response surface between the design parameters and the impeller efficiency. It is shown that the lean angle of the blade leading edge on meridional channel played an important role on the impeller efficiency. Compared with the hub, the shape curve and the circulation distribution shape on the shroud have more influences on the efficiency.

关 键 词：离心风机 叶轮 反问题设计 计算流体力学 

分 类 号：TH432.1[机械工程—机械制造及自动化]