Development of A New Equations Describing Profile Losses in Axial Turbine Blade Row

2017 International Conference on Aerospace Technology, Communications and Energy Systems

航空航天工程;无线电电子学;能源学

Baturin, O.^1 ; Kolmakova, D.^1

Samara National Research University, Samara, Russia^1

关键词: Axial turbine;    Least Square;    Loss model;    Mathematical optimization techniques;    Number of factors;    Profile loss;    Regression equation;    Statistical criterion;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/302/1/012026/pdf
DOI  :  10.1088/1757-899X/302/1/012026

学科分类：航空航天科学

来源: IOP

【 摘 要 】

Based on the previous investigations, regression equation for calculating the profile losses was found by the least squares based on the analysis of the profile losses nature and using mathematical optimization techniques. This equation makes possible to define the profile loss of axial turbine more accurate than the existing models and equations. It allows the calculation of profile loss values in the axial turbine that differ from the actual value by 10±61% with a probability of 95%. The obtained equation is not only superior to other loss models in statistical criteria, but it also considers the increasing number of factors affecting the profile losses.