Optimizing Parameters of Axial Pressure-Compounded Ultra-Low Power Impulse Turbines at Preliminary Design

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

Kalabukhov, D.S.^1 ; Radko, V.M.^1 ; Grigoriev, V.A.^1

Theory of Aircraft Engines Department, Samara University, Samara

443086, Russia^1

关键词: Axial pressures;    Efficiency criteria;    Impulse turbines;    Optimization calculation;    Optimization method;    Optimizing parameters;    Preliminary design;    Turbine parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/302/1/012035/pdf
DOI  :  10.1088/1757-899X/302/1/012035

学科分类：航空航天科学

来源: IOP

【 摘 要 】

Ultra-low power turbine drives are used as energy sources in auxiliary power systems, energy units, terrestrial, marine, air and space transport within the confines of shaft power Ntd= 0.01...10 kW. In this paper we propose a new approach to the development of surrogate models for evaluating the integrated efficiency of multistage ultra-low power impulse turbine with pressure stages. This method is based on the use of existing mathematical models of ultra-low power turbine stage efficiency and mass. It has been used in a method for selecting the rational parameters of two-stage axial ultra-low power turbine. The article describes the basic features of an algorithm for two-stage turbine parameters optimization and for efficiency criteria evaluating. Pledged mathematical models are intended for use at the preliminary design of turbine drive. The optimization method was tested at preliminary design of an air starter turbine. Validation was carried out by comparing the results of optimization calculations and numerical gas-dynamic simulation in the Ansys CFX package. The results indicate a sufficient accuracy of used surrogate models for axial two-stage turbine parameters selection.