Numerical simulation of flows in a centrifugal compressor

The CFD FlowVision domestic software based on the control volume method is used to simulate the air compression and consumption by a centrifugal compressor pressurizing piston engines. For various modes of operation of the compressor, pressure characteristics are obtained and 3D distributions of the flow velocity and pressure in the flow elements of the compressor including blade passages of the rotating propeller are found. Reduced air flow regimes exhibit surge phenomena distinguished by reverse flows. The application of the numerical experiments will make it possible to optimize blade passage profiles and, therefore, to improve the main compressor characteristics, that is, pressure ratio, compressed air flow, and efficiency as well as to reduce the cost of development and production of compressors.

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