Numerical Analysis of the Modern Marine Gas Turbine Rotor Stress-Strain State

In this paper the problem of the gas turbine rotor stress-strain state has been studied. The paper outlines a finite elements refined mathematical model of the gas turbine rotor stress-strain state and can be used for the various types of ground or even floating power plants. The developed mathematical model takes into account the curvilinear finite elements of hexagonal type. With the usage of the developed mathematical model the problems of the turbine rotor flow dynamics, heat exchange and stress-strain state have been studied. The turbine rotor displacements and dynamic stresses fields were found for several most dangerous forced vibration modes. The calculated data together with the numerical and experimental investigation of this rotor fluid flow and thermal state will be used for the next stage of studies, concerning the rotor creep, fatigue crack problems.