离心压缩机变转速特性曲线拟合法

Two-step Fitting for Characteristic Curve of Variable Speed of Centrifugal Compressor

基于压缩机特性曲线的形状相似性和位置渐进变化的规律,本文提出了一种"两步拟合"的压缩机特性线拟合方法,适用于进口条件不变、转速发生变化的压缩机特性曲线拟合.原理简单,方法实用,精度较高.文中还用具体算例加以证明,并说明了需要注意的问题.

Base on the figure similarity of the compressors and the regular pattern of the location changed, this paper put forward two - step curve fitting method for a centrifugal compressor. It was applied to the fitting of characteristic curve for rev changed while the inlet condition remaining unchanged. The principle is simple, the method is practical and the precision is very high. In this paper, it is proved by the example, as well as illustrate the important question.