Kolodyazhna L. Mathematical modelling and analysis of the aeroelastic phenomena in the turbomachine stages in three-dimensional viscous gas flow

A research object are blade rows of axial turbomachine (compressor) stages streamlined by the three-dimensional non-stationary of viscous gas flow. A purpose is an increase of reliability, the economy and prolongation of resource of turbomachines by prediction of non-stationary aeroelastic characteristics, decrease of the non-stationary loads and amplitudes of vibrations of rotor blades. Research methods are a mathematical and numeral modelling of force interaction of space non-stationary viscous gas flow with oscillating blades. Theoretical and practical results are a complex of the programs for the calculation of three-dimensional non-stationary flow of viscous gas through the stage of axial turbomachine with taking into account the vibrations of blades; the difference scheme of Godunov-Kolgan of integration of Navier-Stokes equations is generalized on arbitrary deformed space hybrid H-H and H-O difference grids. Novelty - the scientific problem of increase of reliability and extension of resource of aggregate has been decided by decrease of level of the non-stationary loads and amplitudes of vibrations of blades due to the change of regime or geometrical parameters. Degree of introduction - the developed methods and programme complexes are used in research, production and educational practice, that is confirmed by five acts of introduction and use. Industry of the use is the power-plant engineering.