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借助任定准正交面法[1],[2]对上海船厂380增压器压气机叶轮进行了气动性能设计。通过系统的变方案电算,我们发现在整个叶轮流场里最大气动负荷总是出现在导风轮进口顶部叶片速度面上,工作轮出口近轮盖处的叶片压力面上和因叶轮旋转而产生的边界层甩脱效应受益较少的导风轮进口轮毂型面上。从流体技术基本概念出发,本文提出了鉴别叶轮势流场品质的三条准则。满足和实现这些准则,就能控制设计叶轮通流部分的参数和型线。
With the help of quasi-orthogonal method [1], [2], the aerodynamic performance of 380 turbocharger compressor impeller in Shanghai Shipyard was designed. Through the system of variable calculation, we find that the maximum aerodynamic load in the flow field of the impeller always appears on the top blade velocity surface of the inlet of the impeller, the pressure on the blade surface near the outlet of the working pulley and the rotation of the impeller Resulting in the benefit of the boundary layer rejection effect of the wind turbine inlet hub surface. Starting from the basic concept of fluid technology, this paper presents three criteria for identifying the quality of impeller potential field. Meet and implement these guidelines, we can control the design of the impeller through the flow part of the parameters and profiles.