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Loading Factor Performance of a Centrifugal Compressor Impeller: Specific Features and Way of Modeling

Authors: K. Soldatova, Y. Galerkin

Abstract:

A loading factor performance is necessary for the modeling of centrifugal compressor gas dynamic performance curve. Measured loading factors are linear function of a flow coefficient at an impeller exit. The performance does not depend on the compressibility criterion. To simulate loading factor performances, the authors present two parameters: a loading factor at zero flow rate and an angle between an ordinate and performance line. The calculated loading factor performances of non-viscous are linear too and close to experimental performances. Loading factor performances of several dozens of impellers with different blade exit angles, blade thickness and number, ratio of blade exit/inlet height, and two different type of blade mean line configuration. There are some trends of influence, which are evident – comparatively small blade thickness influence, and influence of geometry parameters is more for impellers with bigger blade exit angles, etc. Approximating equations for both parameters are suggested. The next phase of work will be simulating of experimental performances with the suggested approximation equations as a base.

Keywords: Centrifugal compressor stage, centrifugal compressor, loading factor, gas dynamic performance curve.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1127482

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References:


[1] Seleznev. K. P. Galerkin. Y. B. Centrifugal compressors. // Leningrad. – 1982. – P. 271. (Russian).
[2] Soldatova. K. V. Analysis of gas flow in a gap «a shroud - casing» of a centrifugal compressor stage by numerical methods and design recommendations. Diss. Cand.Tech. sciences. // SPbTU. – SPb. – 2007. (Russian).
[3] Galerkin. Y. B. Tubrocompressors. LTD information and publishing center. - Moscow. – 2010. – P.650. (Russian).
[4] Galerkin. Y. B. Soldatova. K.V. Operational process modeling of industrial centrifugal compressors. Scientific bases. development stages. current state. Monograph. //St. Peterburg. - SPbTU. – 2011. (Russian).
[5] Galerkin Y. Rekstin A. Soldatova K. Gas dynamic design of the pipe line compressor with 90% efficiency. Model test approval. Conference “Compressors and their Systems”. – London. – 2015.
[6] Galerkin Y. Karpov A. Development of method for centrifugal compressor impeller pressure characteristic modeling on results of model stages tests// Compressors & Pneumatics. – Moscow. - 2011. – No.6. – P.13-17. (Russian).
[7] Galerkin Y. Soldatova K. The application of the Universal Modeling Method to development of centrifugal compressor model stages. Conference “Compressors and their Systems”. – 477-487. – London. – 2013. (Russian).
[8] Ris V. Centrifugal compressors. (text) / Ris V.// Leningrad. – 1981. (Russian).