Numerical analysis of the vibrational state of the rotor blade for last
stage of the energy gas turbine under action of unsteady gas flow
А.I. Borovkov,V.S.
Modestov, I.B. Voinov, M.S.
Gritskevich, N.O. Simin,
V.V. Krivonosova, V.V. Zavgorodniy
At
this paper the numerical simulation and investigation of rotor blades aeroelastic vibrations for the fourth stage of gas turbine in order to identify the possibility of
fluid-induced vibrations and flutter were considered. The results of simulation
for the test problems of aeroelasticity, confirming
the validity and correctness of the selected approach and simulation tool are
presented. For calculations of problems the cutting-edge technologies of
numerical analysis, implemented into numerical simulation packages ANSYS /
Mechanical and ANSYS / CFX, were used. The research of the gas flow rate effect
on the dynamic behavior of the blade was carried out.
Key words: aerodynamics, aeroelasaticity, vibrations, flutter, turbine, rotor wheel, numerical simulation.