Gas Turbine Mechanics and Design

Abstract

Designing gas turbines means to translate the aerodynamic and thermodynamic intentions into a system, which is both mechanically sound and manufacturable at reasonable cost. This lecture is aimed at giving a comprehensive overview of the mechanical and design requirements, which must be fulfilled by a safe and reliable machine. Material and life prediction methods will be addressed as well.

Content

General principles (scaled engines, size limitations, safety, auxiliaries) Life Calculation Procedures (assessment of life consumption effects, maintenance requirements, operating data counting) Blading Clearance management (passive and active clearance control, use of abradable contacts,...) Rotors and Engine Vibrations (typical solutions, thermomechanical requirements, safety rules, vibrations and balancing) Bearings (hydrodynamic bearings, roller bearings, damping requirements,?) Blading Dynamics (forced and self excitation, resonance, coupling and damping) Casings (typical solutions, influence on clearance, maintenance requirements, transient behavior) Vane carriers (guidance principles, thermal behavior, shape deviations) Sealings (typical solutions, brush seals, labyrinths, leaf seals, life problems) Blade Attachments (typical solutions with their effect on operation and service) Combustors and Hot gas Liners (typical solutions, typical problems with hot gas liners, combustion humming and protection measures) Piping (arrangement principles and safety requirements) Insulations Inlet Ducts Exhaust ducts Special Aspects of Single Shaft Engines (thrust balance, bearing arrangements) Special Aspects of Multi Shaft Engines (Thrust balance, power balance, overspeed) Application aspects (variable speed drives, generator drive, aero propulsion, marine propulsion, turbo chargers, closed cycles, compressed air energy storage)

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