离心叶轮反问题气动设计的简易评价  

Simple Evaluation of Aerodynamic Design of Centrifugal Impeller

作　　者：于跃平[1] 朱晓农[1] 陈启明[1] 胡四兵[1] 黄文俊[1] 饶杰[1] 王鹏亮[1] 董帆[1] 陈升[1] 

机构地区：[1]合肥通用机械研究院压缩机技术国家重点实验室,安徽合肥230031

出　　处：《流体机械》2015年第11期57-62,共6页Fluid Machinery

摘　　要：综述了目前国内外离心叶轮反问题气动设计评价现状与局限性，结合工程实际，从反问题气动计算设计过程自然形成的速度场与求解出的叶轮几何参数出发，开展二维不可压叶片表面边界层及损失、叶轮内扩压水平、叶轮进口诱导速度比、叶片进口前缘冲角及相对马赫数计算，对反问题气动设计计算进行气动效率、失速点、阻塞点简易定量评估。这些评价结果与CFX计算比较，对应相对误差约为2．6％-6．1％，完全满足工程设计需求，可对透平机械工业设计作出快速评价提供借鉴。Review the current the centrifugal impellers inverse aerodynamic design and evaluation of the status quo and limitation of, the author team combined with the engineering practice, from the inverse problem of gas dynamic design process of the natural formation of the velocity field and solving the geometric parameters of the impeller of calculation, to carry out two - dimensional incompressible leaves surface boundary layer and loss, the impeller diffuser and impeller inlet induced velocity ratio, blade inlet edge punching angle and relative Mach number calculation, for the inverse problem of aerodynamic design and calculation of gas dynamic efficiency, stall point, blocking some simple quantitative evaluation. These results are compared with those of the CFX calculation. The relative error is about 2.6% - 6.1% , which can meet the engineering design requirements. It can provide a reference for the rapid evaluation of turbine machinery industry design.

关 键 词：叶轮反问题 气动设计 简易定量评估 

分 类 号：TH4[机械工程—机械制造及自动化]