Study on the dynamic compressor characteristics transformation at the aspiration parameters and rotation modification

The fresh calculation of the centrifugal-type compressor characteristics at the aspirations parameters and rotations modification has a significant importance in practice, because the tests of compressors generate high energetic consumptions. The solution of the problem is based on replacement of the velocity triangles similitude condition (practically impossible to achieve during all the stages of the compressor), on condition that maintaining the velocity triangles similitude before the working blade from the “average stage”. This approximately allows the condition of maintaining the velocity triangles analogy “the average on the compressor” to be considered as fulfilled.