A simplified model for unstable temperature field calculation of gas turbine rotor
Abstract
A simplified model is presented for calculating the unstable temperature field of a cooled turbine rotor by the finite element method. In the simplified model, an outer radius for calculating has been chosen which is smaller than the radius of the firtree root groove's bottom. And an equivalent heat release coefficient has been introduced. Thus, the calculation can be treated as an axial symmetrical problem and carried out on a microcomputer. The simplified model has been used to calculate the unstable temperature field during the startup of a rotor. A comparison with the threedimensional calculated result shows that the simplified model is satisfactory.
 Publication:

ASME
 Pub Date:
 June 1989
 Bibcode:
 1989asme.confT....H
 Keywords:

 Computational Fluid Dynamics;
 Gas Turbine Engines;
 Rotor Blades (Turbomachinery);
 Temperature Distribution;
 Air Cooling;
 Channel Flow;
 Iterative Solution;
 Fluid Mechanics and Heat Transfer