Multi-level "Learnable" Model of the Workflow in the Centrifugal Compressor Stage

The paper presents the main ideas of the virtual test bench concept for rapid obtaining of the reliable characteristics of compressors based on a multi-level mathematical model with a two-step identification using data obtained from mathematical models with a high order of accuracy. One of the possible identification algorithms and the results of its successful testing are given on the example of a centrifugal compressor stage developed and tested at NASA. The authors created a pilot version of a digital analogue of a centrifugal compressor. Its main feature is that it is created based on a multi-level mathematical model with a two-step identification by the data obtained from mathematical models with a high order of accuracy.

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