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

International Conference on Information Technologies in Business and Industry 2016

计算机科学;经济学;工业技术

Baturin, O.V.^1 ; Popov, G.M.^1 ; Kolmakova, D.A.^1 ; Novikova, Yu D.^1

Samara National Research University, 34, Moskovskoe shosse, Samara

443008, Russia^1

关键词: Axial turbine;    Best model;    Blade row;    Mathematical expectation;    Normal distribution law;    Profile loss;    Standard deviation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/803/1/012017/pdf
DOI  :  10.1088/1742-6596/803/1/012017

来源: IOP

【 摘 要 】

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 μΔξand 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 -884%.