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Information × Registration Number 0214U008385, 0113U005477 , R & D reports Title The development of a hybrid function extremum search algorithm for solving problems of aerodynamic optimization of gas-tubine engine compressor rims. popup.stage_title Head Melashych Sergiy Vasylyovych, Registration Date 23-12-2014 Organization The Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine popup.description2 The research subject is an aerodynamic optimization of compressor rims of aircraft gas-turbine engines. The research aim is to develop a hybrid algorithm for searching extremums of functions for solving a problem of an aerodynamic optimization of compressor rims of gas-turbine engines. The research methods are those of nonlinear programming and analytical geometry. The research results.A necessity of applying evolution methods of the definition of function extremes when solving problems of the aerodynamic optimization of vane channel forms of compressor rims for aircraft gas-turbine engines is validated. A hybrid algorithm for searching extremes of functions of multiple variables is developed. The method comprises a genetic algorithm and a simplex-method of the Nelder - Mead direct search combined on a parallel hybrid circuit, which passes progressively into a two-phase one. Based on multiple-parameter numerical studies, rational values of parameters of the hybrid algorithm for searching extremums of functions are chosen. These values of parameters result in reduction of calculations of a target function, needed for deriving its extremum. Applications: the design of compressors for aircraft gas-turbine engines. Product Description popup.authors Башлій Інна Дмитрівна Мелашич Сергій Васильович popup.nrat_date 2020-04-02 Close