The numerical analysis of aeroelastic behaviour of blade row of aviation engine fan
Keywords:
fan, three-dimensional ideal flow, numerical modelling, unsteady loads, aeroelastic characteristicsAbstract
There presented the numerical analysis of oscillating blade row aeroelastic behaviour of aviation engine fan. The numerical method is based on solution of coupled problem of unsteady aerodynamics and blades elastic oscillations, equations in which are integrated with parallel-sequential information exchange on each iteration. There presented the calculation results of aeroelastic characteristics and aerodamping coefficients of fan blade row under harmonic and coupled blades oscillations for given regimes of boundary conditions in inlet and outlet of blade row. There conducted the numerical analysis of the influence of the 1st natural form frequency on blades oscillations regimes with account of interaction of five natural forms. There shown that increase of the 1st natural form frequency quotes to increase of aerodynamical stability of blades oscillationsReferences
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Copyright (c) 2017 Виталий Исаевич Гнесин, Л. В. Колодяжная, И. Ф. Кравченко, В. М. Меркулов, А. В. Шереметьев, А. В. Петров
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