Concept Development and Approbation of a Multi-Level Model of the Centrifugal Compressor Workflow for Quick Obtaining the Reliable Characteristics in Optimization Tasks

The paper presents the main ideas of the virtual test bench concept for rapid obtaining 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 shown on the example of a centrifugal compressor stage developed and tested at NASA.