Using correlative statistical study idea

performance experimental data of 14 units of domestic axial flow fans and compressors were collected. Two kinds of basic attributes were presented to describe aerodynamic performances of fan and compressor based on analysis and identification of shape structure of off-design characteristic curves of high mass flow fan and high pressure ratio compressor. In an attempt to build a number of non-dimensional physical parameters

the quantitative correlative relationship between shift degree under variable speed and operating range under constant speed of characteristics of fans and compressors was explored in the statistical level. The results show that offset degree of non-design rotating speed characteristic lines and operating range of effective mass flow of fans are greater than that of high pressure ratio compressors

and the relative pressure ratio

relative mass flow

relative mass flow-speed ratio and relative work-speed ratio on peak efficiency line of fans and compressors exhibit obvious statistical regularity. The uniform correlative analysis of performance experimental data can be conducted by means of some empirical mathematical models presented.