Fig. 1. Configuration of industrial gas turbine
Fig. 2. Convection coefficient change of main flow path and bearing housing.
Fig. 3. Convection Temperature change of main flow path and bearing housing.
Fig. 4. Applied thermal boundary condition for heat transfer analysis.
Fig. 5. Concept of consideration of mechanical load.
Fig. 6. Analysis process for clearance design.
Fig. 7. 2D Rotor FEM model for transient thermal-structural analysis.
Fig. 8. 3D Stationary parts FEM model for transient thermal-structural analysis.
Fig. 9. 3D blade and vane FEM model for transient thermal-structural analysis.
Fig. 10. Temperature contour result of stationary parts.
Fig. 11. Displacement contour result of Stationary parts
Fig. 12. Temperature contour result of blade
Fig. 13. Displacement contour result of blade
Fig. 14. Temperature contour result of rotor
Fig. 15. Displacement contour result of rotor
Fig. 16. Calculation concept of interaction of axial and radial displacement.
Fig. 17. Calculation concept of radial displacement of stationary parts.
Fig. 18. Time history displacement result from shutdown to full speed full load condition.
Fig. 19. Clearance design concept.
References
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