The best model for the calculation of profile losses in the axial turbine

The paper proposes a method for evaluating the reliability of models for estimation of the energy losses in the blade rows of axial turbines, based on the statistical analysis of the deviation of the experimental data from the calculated. It was shown that these deviations are subjected to the norma...

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Bibliographic Details
Published in:Journal of physics. Conference series 2017-01, Vol.803 (1), p.12017
Main Authors: Baturin, O V, Popov, G M, Kolmakova, D A, Novikova, Yu D
Format: Article
Language:English
Subjects:
Mathematical models
Normal distribution
Physics
Reliability analysis
Statistical analysis
Turbines
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Summary:The paper proposes a method for evaluating the reliability of models for estimation of the energy losses in the blade rows of axial turbines, based on the statistical analysis of the deviation of the experimental data from the calculated. It was shown that these deviations are subjected to the normal distribution law and can be described by mathematical expectations μΔξ and standard deviation σΔξ. The values of profile losses were calculated by five well-known models for 170 different axial turbines cascades, representing the diversity of turbines used in aircraft GTE. The findings were compared with experimental data. Compared results were subjected to statistical analysis. It was found that the best model to describe the profile losses in axial turbines is a model that has been developed in Central Institute of Aviation Motors (Russia). With a probability of 95%, it allows the calculation of profile losses deviating from the actual values of losses by -8±84%.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/803/1/012017